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In computer science, an associative array, map, symbol table, or dictionary is an abstract data type that stores a collection of (key, value) pairs, such that each possible key appears at most once in the collection. In mathematical terms, an associative array is a function with finite domain. [ 1] It supports 'lookup', 'remove', and 'insert ...
When being inserted to a dictionary, the value object receives a retain message to increase its reference count. The value object will receive the release message when it will be deleted from the dictionary (either explicitly or by adding to the dictionary a different object with the same key).
Twig (template engine) Twig is a template engine for the PHP programming language. Its syntax originates from Jinja and Django templates. [ 3] It's an open source product [ 4] licensed under a BSD License and maintained by Fabien Potencier. The initial version was created by Armin Ronacher.
Pseudocode. In computer science, pseudocode is a description of the steps in an algorithm using a mix of conventions of programming languages (like assignment operator, conditional operator, loop) with informal, usually self-explanatory, notation of actions and conditions. [ 1][ 2] Although pseudocode shares features with regular programming ...
List comprehension. A list comprehension is a syntactic construct available in some programming languages for creating a list based on existing lists. It follows the form of the mathematical set-builder notation ( set comprehension) as distinct from the use of map and filter functions.
In computer science, a symbol table is a data structure used by a language translator such as a compiler or interpreter, where each identifier (or symbol ), constant, procedure and function in a program's source code is associated with information relating to its declaration or appearance in the source. In other words, the entries of a symbol ...
Statement (computer science) In computer programming, a statement is a syntactic unit of an imperative programming language that expresses some action to be carried out. [ 1] A program written in such a language is formed by a sequence of one or more statements. A statement may have internal components (e.g. expressions ).
In mathematics and computer science, a higher-order function ( HOF) is a function that does at least one of the following: takes one or more functions as arguments (i.e. a procedural parameter, which is a parameter of a procedure that is itself a procedure), returns a function as its result. All other functions are first-order functions.