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This module implements a Genetic Algorithm (GA) in pure Perl. Other Perl modules that achieve the same thing (perhaps better, perhaps worse) do exist. Please check CPAN. I mainly wrote this module to satisfy my own needs, and to learn something about GAs along the way. I will not go into the details of GAs here, but here are the bare basics. Plenty of information can be found on the web. In a GA, a population of individuals compete for survival. Each individual is designated by a set of genes that define its behaviour. Individuals that perform better (as defined by the fitness function) have a higher chance of mating with other individuals. When two individuals mate, they swap some of their genes, resulting in an individual that has properties from both of its "parents". Every now and then, a mutation occurs where some gene randomly changes value, resulting in a different individual. If all is well defined, after a few generations, the population should converge on a "good-enough" solution to the problem being tackled.

Pidgin is a multi-protocol instant messaging client. It is compatible with AIM (Oscar and TOC protocols), ICQ, MSN Messenger, Yahoo, IRC, Jabber, Gadu-Gadu, and Zephyr networks. Pidgin users can log in to multiple accounts on multiple IM networks simultaneously. This means that you can be chatting with friends on AOL Instant Messenger, talking to a friend on Yahoo Messenger, and sitting in an IRC channel all at the same time. Pidgin supports many features of the various networks, such as file transfer (coming soon), away messages, typing notification, and MSN window closing notification. It also goes beyond that and provides many unique features. A few popular features are Buddy Pounces, which give the ability to notify you, send a message, play a sound, or run a program when a specific buddy goes away, signs online, or returns from idle; and plugins, consisting of text replacement, a buddy ticker, extended message notification, iconify on away, and more. (Adapted from the About Pidgin page.) Libgaim is a backend library and protocol modules needed for Pidgin frontend frontends such as the GTK+ and console UIs.

This program is designed to match up items in two different lists, which may have two different systems of coordinates. The program allows the two sets of coordinates to be related by a linear, quadratic, or cubic transformation. There was a major change in version 0.15: the first stage uses the clever method of finding the most likely triangles described in Tabur, Publications of the Astronomical Society of Australia, vol 24 , page 189 (2007). This replaces the more brute-force-ish method of Valdes et al., Publications of the Astronomical Society of the Pacific, vol 107, page 1119 (1995), which was employed in version up to 0.14. The program was designed and written to work on lists of stars and other astronomical objects, but it might be applied to other types of data. In order to match two lists of N points, the main algorithm calls for O(N^6) operations (yes, that's N-to-the-sixth), so it's not the most efficient choice. I find myself becoming impatient for N >= 100, but your mileage may vary. On the other hand, it does allow for arbitrary translation, rotation, and scaling...

XML::Compile::WSDL11 understands WSDL version 1.1. An WSDL file defines a set of messages to be send and received over (SOAP) connections. This involves encoding of the message to be send into XML, sending the message to the server, collect the answer, and finally decoding the XML to Perl. As end-user, you do not have to worry about the complex details of the messages and the way to exchange them: it's all simple Perl for you. Also, faults are handled automatically. The only complication you have to worry about is to shape a nested HASH structure to the sending message structure. XML::Compile::Schema::template() may help you. When the definitions are spread over multiple files you will need to use addWSDL() (wsdl) or importDefinitions() (additional schema's) explicitly. Usually, interreferences between those files are broken. Often they reference over networks (you should never trust). So, on purpose you must explicitly load the files you need from local disk! (of course, it is simple to find one-liners as work-arounds, but I will to tell you how!)

Implementation of a function 'digest()' for the creation of hash digests of arbitrary R objects (using the md5, sha-1, sha-256, crc32, xxhash and murmurhash algorithms) permitting easy comparison of R language objects, as well as a function 'hmac()' to create hash-based message authentication code. The md5 algorithm by Ron Rivest is specified in RFC 1321, the sha-1 and sha-256 algorithms are specified in FIPS-180-1 and FIPS-180-2, and the crc32 algorithm is described in ftp://ftp.rocksoft.com/cliens/rocksoft/papers/crc_v3.txt. For md5, sha-1, sha-256 and aes, this package uses small standalone implementations that were provided by Christophe Devine. For crc32, code from the zlib library is used. For sha-512, an implementation by Aaron D. Gifford is used. For xxHash, the implementation by Yann Collet is used. For murmurhash, an implementation by Shane Day is used. Please note that this package is not meant to be deployed for cryptographic purposes for which more comprehensive (and widely tested) libraries such as OpenSSL should be used.

java Management Extensions (JMX) is an API that facilitates building management applications that can configure, and perform operations on, a server applica -tion. In general, each manageable component of the server application is re -presented by a Management Bean (or MBean, for short). JMX defines three types of MBeans, of which Model MBeans are the most flexible. Model MBeans provide a way to define MBeans for many different components, without having to write a specific MBean implementation class for each one. However, this power comes at a price. It is necessary to set up a substantial amount of metadata about each MBean, including the attributes it should expose (similar to JavaBeans properties), the operations it should make available (si -milar to calling methods of a Java object via reflection), and other related information. The Modeler component is designed to make this process fairly pain -less -- the required metadata is configured from an XML description of each Model MBean to be supported. In addition, Modeler provides a factory mechanism to create the actual Model MBean instances themselves.

CityHash provides hash functions for strings. The functions mix the input bits thoroughly but are not suitable for cryptography. See "Hash Quality," below, for details on how CityHash was tested and so on. Functions by CityHash: - CityHash32() returns a 32-bit hash. - CityHash64() and similar return a 64-bit hash. - CityHash128() and similar return a 128-bit hash and are tuned for strings of at least a few hundred bytes. Depending on your compiler and hardware, it's likely faster than CityHash64() on sufficiently long strings. It's slower than necessary on shorter strings, but we expect that case to be relatively unimportant. - CityHashCrc128() and similar are variants of CityHash128() that depend on _mm_crc32_u64(), an intrinsic that compiles to a CRC32 instruction on some CPUs. However, none of the functions we provide are CRCs. - CityHashCrc256() is a variant of CityHashCrc128() that also depends on _mm_crc32_u64(). It returns a 256-bit hash. All members of the CityHash family were designed with heavy reliance on previous work by Austin Appleby, Bob Jenkins, and others. For example, CityHash32 has many similarities with Murmur3a.

PhysicsFS is a library to provide abstract access to various archives. It is intended for use in video games, and the design was somewhat inspired by Quake 3's file subsystem. The programmer defines a "write directory" on the physical filesystem. No file writing done through the PhysicsFS API can leave that write directory, for security. For example, an embedded scripting language cannot write outside of this path if it uses PhysFS for all of its I/O, which means that untrusted scripts can run more safely. Symbolic links can be disabled as well, for added safety. For file reading, the programmer lists directories and archives that form a "search path". Once the search path is defined, it becomes a single, transparent hierarchical filesystem. This makes for easy access to ZIP files in the same way as you access a file directly on the disk, and it makes it easy to ship a new archive that will override a previous archive on a per-file basis. Finally, PhysicsFS gives you platform-abstracted means to determine if CD-ROMs are available, the user's home directory, where in the real filesystem your program is running, etc.

PhysicsFS is a library to provide abstract access to various archives. It is intended for use in video games, and the design was somewhat inspired by Quake 3's file subsystem. The programmer defines a "write directory" on the physical filesystem. No file writing done through the PhysicsFS API can leave that write directory, for security. For example, an embedded scripting language cannot write outside of this path if it uses PhysFS for all of its I/O, which means that untrusted scripts can run more safely. Symbolic links can be disabled as well, for added safety. For file reading, the programmer lists directories and archives that form a "search path". Once the search path is defined, it becomes a single, transparent hierarchical filesystem. This makes for easy access to ZIP files in the same way as you access a file directly on the disk, and it makes it easy to ship a new archive that will override a previous archive on a per-file basis. Finally, PhysicsFS gives you platform-abstracted means to determine if CD-ROMs are available, the user's home directory, where in the real filesystem your program is running, etc.

Finch is a multi-protocol instant messaging client. It is compatible with AIM (Oscar and TOC protocols), ICQ, MSN Messenger, Yahoo, IRC, Jabber, Gadu-Gadu, and Zephyr networks. Finch users can log in to multiple accounts on multiple IM networks simultaneously. This means that you can be chatting with friends on AOL Instant Messenger, talking to a friend on Yahoo Messenger, and sitting in an IRC channel all at the same time. Finch supports many features of the various networks, such as file transfer (coming soon), away messages, typing notification, and MSN window closing notification. It also goes beyond that and provides many unique features. A few popular features are Buddy Pounces, which give the ability to notify you, send a message, play a sound, or run a program when a specific buddy goes away, signs online, or returns from idle; and plugins, consisting of text replacement, a buddy ticker, extended message notification, iconify on away, and more. (Adapted from the About Finch page.)