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  2. UTF-8 - Wikipedia

    en.wikipedia.org/wiki/UTF-8

    UTF-8. UTF-8 is a variable-length character encoding standard used for electronic communication. Defined by the Unicode Standard, the name is derived from Unicode Transformation Format – 8-bit. [ 1] UTF-8 is capable of encoding all 1,112,064 [ a] valid Unicode code points using one to four one- byte (8-bit) code units.

  3. Comma-separated values - Wikipedia

    en.wikipedia.org/wiki/Comma-separated_values

    Comma-separated values ( CSV) is a text file format that uses commas to separate values, and newlines to separate records. A CSV file stores tabular data (numbers and text) in plain text, where each line of the file typically represents one data record. Each record consists of the same number of fields, and these are separated by commas in the ...

  4. Backus–Naur form - Wikipedia

    en.wikipedia.org/wiki/Backus–Naur_form

    Backus–Naur form. In computer science, Backus–Naur form ( / ˌbækəs ˈnaʊər /) (BNF or Backus normal form) is a notation used to describe the syntax of programming languages or other formal languages. It was developed by John Backus and Peter Naur. BNF can be described as a metasyntax notation for context-free grammars.

  5. Data type - Wikipedia

    en.wikipedia.org/wiki/Data_type

    Delete uninstall. In computer science and computer programming, a data type (or simply type) is a collection or grouping of data values, usually specified by a set of possible values, a set of allowed operations on these values, and/or a representation of these values as machine types. [ 1] A data type specification in a program constrains the ...

  6. Universally unique identifier - Wikipedia

    en.wikipedia.org/wiki/Universally_unique_identifier

    A Universally Unique Identifier ( UUID) is a 128-bit label used for information in computer systems. The term Globally Unique Identifier ( GUID) is also used, mostly in Microsoft systems. [ 1][ 2] When generated according to the standard methods, UUIDs are, for practical purposes, unique. Their uniqueness does not depend on a central ...

  7. Boolean data type - Wikipedia

    en.wikipedia.org/wiki/Boolean_data_type

    Boolean data type. In computer science, the Boolean (sometimes shortened to Bool) is a data type that has one of two possible values (usually denoted true and false) which is intended to represent the two truth values of logic and Boolean algebra. It is named after George Boole, who first defined an algebraic system of logic in the mid 19th ...

  8. Regular expression - Wikipedia

    en.wikipedia.org/wiki/Regular_expression

    Regular expression. Blue highlights show the match results of the regular expression pattern: /r[aeiou]+/g (lower case r followed by one or more lower-case vowels). A regular expression (shortened as regex or regexp ), [ 1] sometimes referred to as rational expression, [ 2][ 3] is a sequence of characters that specifies a match pattern in text.

  9. Stack Overflow - Wikipedia

    en.wikipedia.org/wiki/Stack_Overflow

    Stack Overflow. Stack Overflow is a question-and-answer website for computer programmers. It is the flagship site of the Stack Exchange Network. [ 2][ 3][ 4] It was created in 2008 by Jeff Atwood and Joel Spolsky. [ 5][ 6] It features questions and answers on certain computer programming topics. [ 7][ 8][ 9] It was created to be a more open ...