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Eureka Public Key 1.0.0
Eureka Public Key was created due to numerous requests for a public key application using our strong encryption techniques. more>>
Eureka Public Key was created due to numerous requests for a public key application using our strong encryption techniques. The basic principle for its use is one creates their own public key and distributes the key to whomever they will be transferring encrypted files with.
When one receives a key, they import it into their key database. You can create and import as many keys as you wish. Both public keys are used in the cryption process. You select your particular public key to use and the public key of the person who will receive it.
When a file has been received you put in your public key that matches the one they used and select their public key that was used in the encryption. See the Encryption, Decryption and Import/Export sections for more information on these topics. To create a public key, click on Keys then Create Public Key or click on the gold key icon under the menu items.
All you have to do is define a name for the public key and click on Create. All encrypted files will be written to the Encryptions folder. Likewise, all decrypted files will go to the Decryptions folder. If a file already exists with the same name, it will be overwritten.
Encryption:
To Encrypt a file, click on File then Encrypt.
All you have to do is select Your public key, their public key and click on Encrypt or press enter then select the file you want to process.
The file selected will be encrypted and then placed in your Encryptions folder. Now you can send this file in the manner you prefer.
Note that this application encrypts in a binary format. In other words, it uses the full 256 character set and is not a text file. You will need to send it as an attachment if you are using email to transmit it.
Decryption:
To Decrypt a file, click on File then Decrypt.
All you have to do is select Your public key, their public key then click on Decrypt and select the file you want to process.
The file selected will be decrypted and then placed in your Decryptions folder.
<<lessWhen one receives a key, they import it into their key database. You can create and import as many keys as you wish. Both public keys are used in the cryption process. You select your particular public key to use and the public key of the person who will receive it.
When a file has been received you put in your public key that matches the one they used and select their public key that was used in the encryption. See the Encryption, Decryption and Import/Export sections for more information on these topics. To create a public key, click on Keys then Create Public Key or click on the gold key icon under the menu items.
All you have to do is define a name for the public key and click on Create. All encrypted files will be written to the Encryptions folder. Likewise, all decrypted files will go to the Decryptions folder. If a file already exists with the same name, it will be overwritten.
Encryption:
To Encrypt a file, click on File then Encrypt.
All you have to do is select Your public key, their public key and click on Encrypt or press enter then select the file you want to process.
The file selected will be encrypted and then placed in your Encryptions folder. Now you can send this file in the manner you prefer.
Note that this application encrypts in a binary format. In other words, it uses the full 256 character set and is not a text file. You will need to send it as an attachment if you are using email to transmit it.
Decryption:
To Decrypt a file, click on File then Decrypt.
All you have to do is select Your public key, their public key then click on Decrypt and select the file you want to process.
The file selected will be decrypted and then placed in your Decryptions folder.
Download (2.6MB)
Added: 2007-05-10 License: Freeware Price:
959 downloads
Distributed RSA Key Generation 1.0
Distributed RSA Key Generation is a software to generate shared RSA keys. more>>
Distributed RSA Key Generation is a software to generate shared RSA keys. Currently, only keys for two parties using Gilboas protocol are supported. But the protocol stack is extensible, so in the future there may be other protocols supported.
Work has begun on Straubs protocol but is not finished yet, multi-party protocols like Boneh-Franklins may also be added in the far future.
<<lessWork has begun on Straubs protocol but is not finished yet, multi-party protocols like Boneh-Franklins may also be added in the far future.
Download (2.3MB)
Added: 2006-09-04 License: GPL (GNU General Public License) Price:
1156 downloads
WEP Key Changer 0.2
WEP Key Changer project, in short WepKC is a client/server application that allows you to protect your wireless network. more>>
WEP Key Changer project, in short WepKC is a client/server application that allows you to protect your ad-hoc (point to point) wireless network when you are unable to use (due to software or hardware limitations) sophisticated protocols like WPA.
The program consists out of two parts:
the wepkcd daemon, which randomly changes the WEP key after a specified amount of time and sends the chosen key, encrypted with AES, to the wepkcc client
the wepkcc client, which receives the key through the encrypted channel and changes the WEP key in the client machine
The server also waits for packets ("pings") from the client, resetting the WEP key to a defined value when the client goes down and stops pinging the server.
If someone tries to use the wireless network without contacting the server, the connection will be dropped repeatedly in order to prevent further annoyance from strangers (please note that this feature, at the moment, works only in *nix systems).
And its very easy to setup and use.
<<lessThe program consists out of two parts:
the wepkcd daemon, which randomly changes the WEP key after a specified amount of time and sends the chosen key, encrypted with AES, to the wepkcc client
the wepkcc client, which receives the key through the encrypted channel and changes the WEP key in the client machine
The server also waits for packets ("pings") from the client, resetting the WEP key to a defined value when the client goes down and stops pinging the server.
If someone tries to use the wireless network without contacting the server, the connection will be dropped repeatedly in order to prevent further annoyance from strangers (please note that this feature, at the moment, works only in *nix systems).
And its very easy to setup and use.
Download (4.2MB)
Added: 2006-08-14 License: GPL (GNU General Public License) Price:
1197 downloads
ESE Key Daemon 1.2.3
ESE Key Daemon is a multimedia keyboard driver for Linux. more>>
ESE Key Daemon is a multimedia keyboard driver for Linux. No kernel patch is needed.
ESE Key Daemon is a userspace program which pools /dev/input/event interfaces for incoming keyboard key presses.
Enhancements:
- A bug in the configuration file handling routines was fixed.
<<lessESE Key Daemon is a userspace program which pools /dev/input/event interfaces for incoming keyboard key presses.
Enhancements:
- A bug in the configuration file handling routines was fixed.
Download (0.10MB)
Added: 2006-06-02 License: GPL (GNU General Public License) Price:
1240 downloads
DVB Remote Key Editor 0.2.1
DVB Remote Key Editor project was made in order to have an easy way of modifying the keymaps of DVB-T remotes. more>>
DVB Remote Key Editor project was made in order to have an easy way of modifying the keymaps of DVB-T remotes which are usually hardcoded in the corresponding kernel-modules.
Currently this works for the following models:
Haupauge Win-TV Nova-T USB2 dvb-usb-nova-t-usb2.ko 45
Cinergy T2 cinergyT2.ko 37
AVerMedia AverTV DVB-T dvb-usb-a800.ko 34
Generic dib-usb Driver dvb-usb-dibusb-common.ko 63
WideView/Yakumo/Hama/Typhoon/Yuan DVB-T USB2 dvb-usb-dtt200u.ko 18
TwinhanDTV Alpha/MagicBoxII USB2 dvb-usb-vp7045.ko 32
This will not work if your kernel is enabled to use ksign, which secures kernel-modules against binary modifications.
Usage:
Run as root by executing: gksudo python dvb-remote-key-editor.py
Warning: This application binary patches a kernel module. Therefore be sure to make a backup of the module. THIS SOFTWARE COMES WITH ABSOLUTELY NO WARRANTY!
<<lessCurrently this works for the following models:
Haupauge Win-TV Nova-T USB2 dvb-usb-nova-t-usb2.ko 45
Cinergy T2 cinergyT2.ko 37
AVerMedia AverTV DVB-T dvb-usb-a800.ko 34
Generic dib-usb Driver dvb-usb-dibusb-common.ko 63
WideView/Yakumo/Hama/Typhoon/Yuan DVB-T USB2 dvb-usb-dtt200u.ko 18
TwinhanDTV Alpha/MagicBoxII USB2 dvb-usb-vp7045.ko 32
This will not work if your kernel is enabled to use ksign, which secures kernel-modules against binary modifications.
Usage:
Run as root by executing: gksudo python dvb-remote-key-editor.py
Warning: This application binary patches a kernel module. Therefore be sure to make a backup of the module. THIS SOFTWARE COMES WITH ABSOLUTELY NO WARRANTY!
Download (0.014MB)
Added: 2007-01-22 License: GPL (GNU General Public License) Price:
619 downloads
OpenSSH LDAP Public Key patch 0.3.9
The OpenSSH LDAP Public Key patch provides an easy way of centralizing strong user authentication. more>>
OpenSSH LDAP Public Key patch provides an easy way of centralizing strong user authentication by using an LDAP server for retrieving public keys instead of ~/.ssh/authorized_keys.
It uses the standard core.schema/nis.schema and strongAuthenticationUser object class, which can simplify login centralization but could introduce serious security flaws if the LDAP server is not correctly configured.
Enhancements:
- A memory leak has been fixed.
- A potential LDAP filter injection if a username has strange characters in it [()*] has been fixed.
<<lessIt uses the standard core.schema/nis.schema and strongAuthenticationUser object class, which can simplify login centralization but could introduce serious security flaws if the LDAP server is not correctly configured.
Enhancements:
- A memory leak has been fixed.
- A potential LDAP filter injection if a username has strange characters in it [()*] has been fixed.
Download (0.059MB)
Added: 2007-08-04 License: BSD License Price:
815 downloads
The Hacker Key Guide 4
The Hacker Key Guide allows hackers, both current and aspiring, to encode vital information about their traits. more>>
The Hacker Key Guide allows hackers, both current and aspiring, to encode vital information about their traits into a single line of text, generally useful for sig files.
The Hacker Key Guide is based in principle on the wonderful Geek Code by Robert Hayden, but is skewed further to the geek programming niche.
Enhancements:
- Category additions include "Cygwin" for Windows, "MMO" and "RTS" to games, and several new additions to the books section.
- Answers 2 and 3 in math were changed for those hackers still in secondary school.
- The Linux section was completely revamped and updated, and the user-specified (O)ther option was added to Linux and IDE/text editors.
- The politics section now uses the Political Compass website ratings.
<<lessThe Hacker Key Guide is based in principle on the wonderful Geek Code by Robert Hayden, but is skewed further to the geek programming niche.
Enhancements:
- Category additions include "Cygwin" for Windows, "MMO" and "RTS" to games, and several new additions to the books section.
- Answers 2 and 3 in math were changed for those hackers still in secondary school.
- The Linux section was completely revamped and updated, and the user-specified (O)ther option was added to Linux and IDE/text editors.
- The politics section now uses the Political Compass website ratings.
Download (MB)
Added: 2007-01-03 License: (FDL) GNU Free Documentation License Price:
1042 downloads
Lock Keys Applet 1.0
Lock Keys Applet (formerly Led_applet) is a GNOME 2 applet that shows the status of the Caps-, Num-, and Scroll Lock keys. more>>
Lock keys Applet is a GNOME-applet, that shows the status of the caps-, num- and scroll-lock keys of your keyboard.
This isnt especially usefull for normal keyboards, as they got leds for that. But some keyboards (especially wireless keyboards) dont have. One more feature of the applet is that it saves the status of the lock-keys and restores it, when starting GNOME.
Installation:
The `configure shell script attempts to guess correct values for various system-dependent variables used during compilation. It uses those values to create a `Makefile in each directory of the package.
It may also create one or more `.h files containing system-dependent definitions.
Finally, it creates a shell script `config.status that you can run in the future to recreate the current configuration, a file `config.cache that saves the results of its tests to speed up reconfiguring, and a file `config.log containing compiler output (useful mainly for debugging `configure).
If you need to do unusual things to compile the package, please try to figure out how `configure could check whether to do them, and mail diffs or instructions to the address given in the `README so they can be considered for the next release.
If at some point `config.cache contains results you dont want to keep, you may remove or edit it.
The file `configure.in is used to create `configure by a program called `autoconf. You only need `configure.in if you want to change it or regenerate `configure using a newer version of `autoconf.
The simplest way to compile this package is:
1. `cd to the directory containing the packages source code and type `./configure to configure the package for your system.
If youre using `csh on an old version of System V, you might need to type `sh ./configure instead to prevent `csh from trying to execute `configure itself.
Running `configure takes awhile. While running, it prints some messages telling which features it is checking for.
2. Type `make to compile the package.
3. Optionally, type `make check to run any self-tests that come with the package.
4. Type `make install to install the programs and any data files and documentation.
5. You can remove the program binaries and object files from the source code directory by typing `make clean. To also remove the files that `configure created (so you can compile the package for a different kind of computer), type `make distclean.
There is also a `make maintainer-clean target, but that is intended mainly for the packages developers. If you use it, you may have to get all sorts of other programs in order to regenerate files that came with the distribution.
Enhancements:
- (almost) completly renamed everything to lock-keys-applet
<<lessThis isnt especially usefull for normal keyboards, as they got leds for that. But some keyboards (especially wireless keyboards) dont have. One more feature of the applet is that it saves the status of the lock-keys and restores it, when starting GNOME.
Installation:
The `configure shell script attempts to guess correct values for various system-dependent variables used during compilation. It uses those values to create a `Makefile in each directory of the package.
It may also create one or more `.h files containing system-dependent definitions.
Finally, it creates a shell script `config.status that you can run in the future to recreate the current configuration, a file `config.cache that saves the results of its tests to speed up reconfiguring, and a file `config.log containing compiler output (useful mainly for debugging `configure).
If you need to do unusual things to compile the package, please try to figure out how `configure could check whether to do them, and mail diffs or instructions to the address given in the `README so they can be considered for the next release.
If at some point `config.cache contains results you dont want to keep, you may remove or edit it.
The file `configure.in is used to create `configure by a program called `autoconf. You only need `configure.in if you want to change it or regenerate `configure using a newer version of `autoconf.
The simplest way to compile this package is:
1. `cd to the directory containing the packages source code and type `./configure to configure the package for your system.
If youre using `csh on an old version of System V, you might need to type `sh ./configure instead to prevent `csh from trying to execute `configure itself.
Running `configure takes awhile. While running, it prints some messages telling which features it is checking for.
2. Type `make to compile the package.
3. Optionally, type `make check to run any self-tests that come with the package.
4. Type `make install to install the programs and any data files and documentation.
5. You can remove the program binaries and object files from the source code directory by typing `make clean. To also remove the files that `configure created (so you can compile the package for a different kind of computer), type `make distclean.
There is also a `make maintainer-clean target, but that is intended mainly for the packages developers. If you use it, you may have to get all sorts of other programs in order to regenerate files that came with the distribution.
Enhancements:
- (almost) completly renamed everything to lock-keys-applet
Download (0.27MB)
Added: 2005-09-29 License: GPL (GNU General Public License) Price:
1485 downloads
Sort::Key 1.28
Sort::Key is the fastest way to sort anything in Perl. more>>
Sort::Key is the fastest way to sort anything in Perl.
SYNOPSIS
use Sort::Key qw(keysort nkeysort ikeysort);
@by_name = keysort { "$_->{surname} $_->{name}" } @people;
# sorting by a numeric key:
@by_age = nkeysort { $_->{age} } @people;
# sorting by a numeric integer key:
@by_sons = ikeysort { $_->{sons} } @people;
Sort::Key provides a set of functions to sort lists of values by some calculated key value.
It is faster (usually much faster) and uses less memory than other alternatives implemented around perl sort function (ST, GRT, etc.).
Multikey sorting functionality is also provided via the companion modules Sort::Key::Multi, Sort::Key::Maker and Sort::Key::Register.
FUNCTIONS
This module provides a large number of sorting subroutines but they are all variations off the keysort one:
@sorted = keysort { CALC_KEY($_) } @data
that is conceptually equivalent to
@sorted = sort { CALC_KEY($a) cmp CALC_KEY($b) } @data
and where CALC_KEY($_) can be any expresion to extract the key value from $_ (not only a subroutine call).
For instance, some variations are nkeysort that performs a numeric comparison, rkeysort that orders the data in descending order, ikeysort and ukeysort that are optimized versions of nkeysort that can be used when the keys are integers or unsigned integers respectively, etc.
Also, inplace versions of the sorters are provided. For instance
keysort_inplace { CALC_KEY($_) } @data
that is equivalent to
@data = keysort { CALC_KEY($_) } @data
but being (a bit) faster and using less memory.
The full list of subroutines that can be imported from this module follows:
keysort { CALC_KEY } @array
returns the elements on @array sorted by the key calculated applying { CALC_KEY } to them.
Inside { CALC_KEY }, the object is available as $_.
For example:
@a=({name=>john, surname=>smith}, {name=>paul, surname=>belvedere});
@by_name=keysort {$_->{name}} @a;
This function honours the use locale pragma.
nkeysort { CALC_KEY } @array
similar to keysort but compares the keys numerically instead of as strings.
This function honours the use integer pragma, i.e.:
use integer;
my @s=(2.4, 2.0, 1.6, 1.2, 0.8);
my @ns = nkeysort { $_ } @s;
print "@nsn"
prints
0.8 1.6 1.2 2.4 2
rnkeysort { CALC_KEY } @array
works as nkeysort, comparing keys in reverse (or descending) numerical order.
ikeysort { CALC_KEY } @array
works as keysort but compares the keys as integers (32 bits or more, no checking is performed for overflows).
rikeysort { CALC_KEY } @array
works as ikeysort, but in reverse (or descending) order.
ukeysort { CALC_KEY } @array
works as keysort but compares the keys as unsigned integers (32 bits or more).
For instance, it can be used to efficiently sort IP4 addresses:
my @data = qw(1.2.3.4 4.3.2.1 11.1.111.1 222.12.1.34
0.0.0.0 255.255.255.0) 127.0.0.1);
my @sorted = ukeysort {
my @a = split /./;
(((($a[0] name,
$_->middlename },
qw(str str str);
Sort::Key::register_type Color =>
sub { $_->R, $_->G, $_->B },
qw(int int int);
Once a datatype has been registered it can be used in the same way as types supported natively, even for defining new types, i.e.:
Sort::Key::register_type Family =>
sub { $_->man, $_->woman },
qw(Person Person);
<<lessSYNOPSIS
use Sort::Key qw(keysort nkeysort ikeysort);
@by_name = keysort { "$_->{surname} $_->{name}" } @people;
# sorting by a numeric key:
@by_age = nkeysort { $_->{age} } @people;
# sorting by a numeric integer key:
@by_sons = ikeysort { $_->{sons} } @people;
Sort::Key provides a set of functions to sort lists of values by some calculated key value.
It is faster (usually much faster) and uses less memory than other alternatives implemented around perl sort function (ST, GRT, etc.).
Multikey sorting functionality is also provided via the companion modules Sort::Key::Multi, Sort::Key::Maker and Sort::Key::Register.
FUNCTIONS
This module provides a large number of sorting subroutines but they are all variations off the keysort one:
@sorted = keysort { CALC_KEY($_) } @data
that is conceptually equivalent to
@sorted = sort { CALC_KEY($a) cmp CALC_KEY($b) } @data
and where CALC_KEY($_) can be any expresion to extract the key value from $_ (not only a subroutine call).
For instance, some variations are nkeysort that performs a numeric comparison, rkeysort that orders the data in descending order, ikeysort and ukeysort that are optimized versions of nkeysort that can be used when the keys are integers or unsigned integers respectively, etc.
Also, inplace versions of the sorters are provided. For instance
keysort_inplace { CALC_KEY($_) } @data
that is equivalent to
@data = keysort { CALC_KEY($_) } @data
but being (a bit) faster and using less memory.
The full list of subroutines that can be imported from this module follows:
keysort { CALC_KEY } @array
returns the elements on @array sorted by the key calculated applying { CALC_KEY } to them.
Inside { CALC_KEY }, the object is available as $_.
For example:
@a=({name=>john, surname=>smith}, {name=>paul, surname=>belvedere});
@by_name=keysort {$_->{name}} @a;
This function honours the use locale pragma.
nkeysort { CALC_KEY } @array
similar to keysort but compares the keys numerically instead of as strings.
This function honours the use integer pragma, i.e.:
use integer;
my @s=(2.4, 2.0, 1.6, 1.2, 0.8);
my @ns = nkeysort { $_ } @s;
print "@nsn"
prints
0.8 1.6 1.2 2.4 2
rnkeysort { CALC_KEY } @array
works as nkeysort, comparing keys in reverse (or descending) numerical order.
ikeysort { CALC_KEY } @array
works as keysort but compares the keys as integers (32 bits or more, no checking is performed for overflows).
rikeysort { CALC_KEY } @array
works as ikeysort, but in reverse (or descending) order.
ukeysort { CALC_KEY } @array
works as keysort but compares the keys as unsigned integers (32 bits or more).
For instance, it can be used to efficiently sort IP4 addresses:
my @data = qw(1.2.3.4 4.3.2.1 11.1.111.1 222.12.1.34
0.0.0.0 255.255.255.0) 127.0.0.1);
my @sorted = ukeysort {
my @a = split /./;
(((($a[0] name,
$_->middlename },
qw(str str str);
Sort::Key::register_type Color =>
sub { $_->R, $_->G, $_->B },
qw(int int int);
Once a datatype has been registered it can be used in the same way as types supported natively, even for defining new types, i.e.:
Sort::Key::register_type Family =>
sub { $_->man, $_->woman },
qw(Person Person);
Download (0.055MB)
Added: 2007-05-22 License: Perl Artistic License Price:
888 downloads
SSH with Keys HOWTO 0.08
SSH with Keys HOWTO is a document which shows how to use SSH with keys, passphrases, and ssh-agent. more>>
SSH with Keys HOWTO is a document which shows how to use SSH with keys, passphrases, and ssh-agent.
For those of you who have been using SSH for a while, you will probably understand its advantages over the previous telnet style applications such as telnet and remote shell.
Although SSH with keys has always been there, not many people know what it is about, and how you can utilize its strenghts to make your life as a system administrator a bit more easy.
<<lessFor those of you who have been using SSH for a while, you will probably understand its advantages over the previous telnet style applications such as telnet and remote shell.
Although SSH with keys has always been there, not many people know what it is about, and how you can utilize its strenghts to make your life as a system administrator a bit more easy.
Download (MB)
Added: 2006-10-04 License: (FDL) GNU Free Documentation License Price:
1117 downloads
Gnome Multimedia Keys 0.2
Gnome Multimedia Keys is an Amarok script that will allow the use of keyboard multimedia keys in Gnome 2.18 and above. more>>
Gnome Multimedia Keys is an Amarok script that will allow the use of keyboard multimedia keys in Gnome 2.18 and above (eg. ubuntu feisty) to control playback. This includes most multimedia buttons found on many laptops. Support for this was broken due to changes in the handling of keyboard shortcuts by gnome 2.18.
Currently supported operations are:
- Play/Pause
- Pause
- Stop
- Next Track
- Previous Track
Simply run the script, no configuration of the script itself is required. The desired keyboard shortcuts can be configured by selecting "System-->Prefrences-->Keyboard Shortcuts" from the Gnome panel.
<<lessCurrently supported operations are:
- Play/Pause
- Pause
- Stop
- Next Track
- Previous Track
Simply run the script, no configuration of the script itself is required. The desired keyboard shortcuts can be configured by selecting "System-->Prefrences-->Keyboard Shortcuts" from the Gnome panel.
Download (0.002MB)
Added: 2007-06-29 License: GPL (GNU General Public License) Price:
852 downloads
Sort::Key::Top 0.01
Sort::Key::Top is a Perl module that can select and sort top n elements. more>>
Sort::Key::Top is a Perl module that can select and sort top n elements.
SYNOPSIS
use Sort::Key::Top (nkeytop top);
# select 5 first numbers by absolute value:
@top = nkeytop { abs $_ } 5 => 1, 2, 7, 5, 5, 1, 78, 0, -2, -8, 2;
# ==> @top = (1, 2, 1, 0, -2)
# select 5 first words by lexicographic order:
@a = qw(cat fish bird leon penguin horse rat elephant squirrel dog);
@top = top 5 => @a;
# ==> @top = qw(cat fish bird elephant dog);
The functions available from this module select the top n elements from a list using several common orderings and custom key extraction procedures.
They are all variations around
keytopsort { CALC_KEY($_) } $n => @data;
This function calculates the ordering key for every element in @data using the expression inside the block. Then it selects and orders the $n elements with the lower keys when compared lexicographically.
It is equivalent to the pure Perl expression:
(sort { CALC_KEY($a) cmp CALC_KEY($b) } @data)[0 .. $n-1];
Variations allow to:
- use the own values as the ordering keys
topsort 5 => qw(a b ab t uu g h aa aac);
==> a aa aac ab b
- return the selected values in the original order
top 5 => qw(a b ab t uu g h aa aac);
==> a b ab aa aac
- use a different ordering
For instance comparing the keys as numbers, using the locale configuration or in reverse order:
rnkeytop { length $_ } 3 => qw(a ab aa aac b t uu g h);
==> ab aa aac
rnkeytopsort { length $_ } 3 => qw(a ab aa aac b t uu g h);
==> aac ab aa
A prefix is used to indicate the required ordering:
(no prefix)
lexicographical ascending order
r
lexicographical descending order
l
lexicographical ascending order obeying locale configuration
r
lexicographical descending order obeying locale configuration
n
numerical ascending order
rn
numerical descending order
i
numerical ascending order but converting the keys to integers first
ri
numerical descending order but converting the keys to integers first
u
numerical ascending order but converting the keys to unsigned integers first
ru
numerical descending order but converting the keys to unsigned integers first
The full list of available functions is:
top ltop ntop itop utop rtop rltop rntop ritop rutop
keytop lkeytop nkeytop ikeytop ukeytop rkeytop rlkeytop rnkeytop
rikeytop rukeytop
topsort ltopsort ntopsort itopsort utopsort rtopsort rltopsort
rntopsort ritopsort rutopsort
keytopsort lkeytopsort nkeytopsort ikeytopsort ukeytopsort
rkeytopsort rlkeytopsort rnkeytopsort rikeytopsort rukeytopsort
<<lessSYNOPSIS
use Sort::Key::Top (nkeytop top);
# select 5 first numbers by absolute value:
@top = nkeytop { abs $_ } 5 => 1, 2, 7, 5, 5, 1, 78, 0, -2, -8, 2;
# ==> @top = (1, 2, 1, 0, -2)
# select 5 first words by lexicographic order:
@a = qw(cat fish bird leon penguin horse rat elephant squirrel dog);
@top = top 5 => @a;
# ==> @top = qw(cat fish bird elephant dog);
The functions available from this module select the top n elements from a list using several common orderings and custom key extraction procedures.
They are all variations around
keytopsort { CALC_KEY($_) } $n => @data;
This function calculates the ordering key for every element in @data using the expression inside the block. Then it selects and orders the $n elements with the lower keys when compared lexicographically.
It is equivalent to the pure Perl expression:
(sort { CALC_KEY($a) cmp CALC_KEY($b) } @data)[0 .. $n-1];
Variations allow to:
- use the own values as the ordering keys
topsort 5 => qw(a b ab t uu g h aa aac);
==> a aa aac ab b
- return the selected values in the original order
top 5 => qw(a b ab t uu g h aa aac);
==> a b ab aa aac
- use a different ordering
For instance comparing the keys as numbers, using the locale configuration or in reverse order:
rnkeytop { length $_ } 3 => qw(a ab aa aac b t uu g h);
==> ab aa aac
rnkeytopsort { length $_ } 3 => qw(a ab aa aac b t uu g h);
==> aac ab aa
A prefix is used to indicate the required ordering:
(no prefix)
lexicographical ascending order
r
lexicographical descending order
l
lexicographical ascending order obeying locale configuration
r
lexicographical descending order obeying locale configuration
n
numerical ascending order
rn
numerical descending order
i
numerical ascending order but converting the keys to integers first
ri
numerical descending order but converting the keys to integers first
u
numerical ascending order but converting the keys to unsigned integers first
ru
numerical descending order but converting the keys to unsigned integers first
The full list of available functions is:
top ltop ntop itop utop rtop rltop rntop ritop rutop
keytop lkeytop nkeytop ikeytop ukeytop rkeytop rlkeytop rnkeytop
rikeytop rukeytop
topsort ltopsort ntopsort itopsort utopsort rtopsort rltopsort
rntopsort ritopsort rutopsort
keytopsort lkeytopsort nkeytopsort ikeytopsort ukeytopsort
rkeytopsort rlkeytopsort rnkeytopsort rikeytopsort rukeytopsort
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