A "Hello, World!" program is a computer program that outputs "Hello, World!" (or some variant thereof) on a display device.
The Apache HTTP Server, colloquially called Apache, is the world's most used web server software.
In computer science, an array type is a data type that is meant to describe a collection of elements (values or variables), each selected by one or more indices (identifying keys) that can be computed at run time by the program.
In computer science, an associative array, map, symbol table, or dictionary is an abstract data type composed of a collection of (key, value) pairs, such that each possible key appears just once in the collection.
In the Perl programming language, autovivification is the automatic creation of new arrays and hashes as required every time an undefined value is dereferenced.
Backtracking is a general algorithm for finding all (or some) solutions to some computational problems, notably constraint satisfaction problems, that incrementally builds candidates to the solutions, and abandons each partial candidate c ("backtracks") as soon as it determines that c cannot possibly be completed to a valid solution.
In computer science, a call stack is a stack data structure that stores information about the active subroutines of a computer program.
In computer programming, a comment is a programmer-readable annotation in the source code of a computer program.
A conditional operator is a type of operator.
CPAN, the Comprehensive Perl Archive Network, is an archive of over 150,929 modules of software in 31,954 distributions, written by 12,241 authors, written in the Perl programming language, as well as documentation for them.
New!!: Perl language structure and CPAN ·
In computer science and computer programming, a data type or simply type is a classification identifying one of various types of data, such as real, integer or Boolean, that determines the possible values for that type; the operations that can be done on values of that type; the meaning of the data; and the way values of that type can be stored.
In computing and telecommunication, an escape character is a character which invokes an alternative interpretation on subsequent characters in a character sequence.
In Unix and related computers operating systems, a file descriptor (FD, less frequently fildes) is an abstract indicator used to access a file or other input/output resource, such as a pipe or network connection.
A filename extension is an identifier specified as a suffix to the name by syntax, often separated from the base filename (by, e.g., a dot, a space), that indicates, e.g., the encoding (file format), the usage, of a computer file.
In computer science, functional programming is a programming paradigm—a style of building the structure and elements of computer programs—that treats computation as the evaluation of mathematical functions and avoids changing-state and mutable data.
In computer programming, in particular in a Unix-like environment, glob patterns specify sets of filenames with wildcard characters.
In computing, a hash table (hash map) is a data structure used to implement an associative array, a structure that can map keys to values.
Henry Spencer (born 1955) is a Canadian computer programmer and space enthusiast.
In computing, a here document (here-document, heredoc, hereis, here-string or here-script) is a file literal or input stream literal: it is a section of a source code file that is treated as if it were a separate file.
In logic and related fields such as mathematics and philosophy, if and only if (shortened iff) is a biconditional logical connective between statements.
In computing, input/output or I/O (or, informally, io or IO) is the communication between an information processing system, such as a computer, and the outside world, possibly a human or another information processing system.
Java is a general-purpose computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible.
Microsoft Windows (or simply Windows) is a metafamily of graphical operating systems developed, marketed, and sold by Microsoft.
In object-oriented programming languages, a mixin is a class that contains a combination of methods from other classes.
New!!: Perl language structure and Mixin ·
Moose is an extension of the object system of the Perl programming language.
In computing, a newline, also known as a line ending, end of line (EOL), or line break, is a special character or sequence of characters signifying the end of a line of text and the start of a new line.
New!!: Perl language structure and Newline ·
Object-oriented programming (OOP) is a programming paradigm based on the concept of "objects", which are data structures that contain data, in the form of fields, often known as attributes; and code, in the form of procedures, often known as methods. A distinguishing feature of objects is that an object's procedures can access and often modify the data fields of the object with which they are associated (objects have a notion of "this" or "self").
In mathematics and computer programming, the order of operations (or operator precedence) is a collection of rules that define which procedures to perform first in order to evaluate a given mathematical expression.
Perl is a family of high-level, general-purpose, interpreted, dynamic programming languages.
New!!: Perl language structure and Perl ·
Perl 6 is a member of the Perl family of programming languages.
New!!: Perl language structure and Perl 6 ·
Perl Compatible Regular Expressions (PCRE) is a regular expression C library inspired by the regular expression capabilities in the Perl programming language, written by Philip Hazel, starting in summer 1997.
PHP is a server-side scripting language designed for web development but also used as a general-purpose programming language.
New!!: Perl language structure and PHP ·
In Unix-like computer operating systems (and, to some extent, Microsoft Windows), a pipeline is a set of processes chained by their standard streams, so that the output of each process (stdout) feeds directly as input (stdin) to the next one.
POSIX, an acronym for Portable Operating System Interface, is a family of standards specified by the IEEE Computer Society for maintaining compatibility between operating systems.
New!!: Perl language structure and POSIX ·
A programming paradigm is a fundamental style of computer programming, serving as a way of building the structure and elements of computer programs.
In computer science, a reference is a value that enables a program to indirectly access a particular datum, such as a variable or a record, in the computer's memory or in some other storage device.
In theoretical computer science and formal language theory, a regular expression (abbreviated regex or regexp and sometimes called a rational expression) is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations.
Rounding a numerical value means replacing it by another value that is approximately equal but has a shorter, simpler, or more explicit representation; for example, replacing £23.4476 with £23.45, or the fraction 312/937 with 1/3, or the expression √2 with 1.414.
New!!: Perl language structure and Rounding ·
Ruby is a dynamic, reflective, object-oriented, general-purpose programming language.
In computing, a shebang (also called a sha-bang, hashbang, pound-bang, or hash-pling), is the character sequence consisting of the characters number sign and exclamation mark (that is, "#!") at the beginning of a script.
Short-circuit evaluation, minimal evaluation, or McCarthy evaluation denotes the semantics of some Boolean operators in some programming languages in which the second argument is executed or evaluated only if the first argument does not suffice to determine the value of the expression: when the first argument of the AND function evaluates to false, the overall value must be false; and when the first argument of the OR function evaluates to true, the overall value must be true.
In computer programming, a string is traditionally a sequence of characters, either as a literal constant or as some kind of variable.
In computer programming, a subroutine is a sequence of program instructions that perform a specific task, packaged as a unit.
In computer programming languages, a switch statement is a type of selection control mechanism used to allow the value of a variable or expression to change the control flow of program execution via a multiway branch.
In computer science, a tail call is a subroutine call performed as the final action of a procedure.
There's more than one way to do it (TMTOWTDI or TIMTOWTDI, pronounced Tim Toady) is a Perl programming motto.
In programming languages, a type system is a collection of rules that assign a property called type to various constructs a computer program consists of, such as variables, expressions, functions or modules.
In computer programming, a variable or scalar is a storage location paired with an associated symbolic name (an identifier), which contains some known or unknown quantity of information referred to as a value.
.NET Framework (pronounced dot net) is a software framework developed by Microsoft that runs primarily on Microsoft Windows.