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Empty string

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In formal language theory, the empty string, or empty word is the unique string of length zero. [1]

54 relations: APL (programming language), ASCII, C (programming language), C Sharp (programming language), C++, C++14, Character (symbol), Concatenation, Concatenation theory, Context-free grammar, Data type, Empty set, False (logic), Formal language, Free monoid, Go (programming language), Haskell (programming language), Identity element, Java (programming language), JavaScript, Lambda, Leading zero, Lexicographical order, Lua (programming language), MATLAB, MediaWiki, Memory address, Newline, Null character, Null pointer, Null-terminated string, Numerical digit, Object Pascal, Objective-C, OCaml, Paragraph, Pascal (programming language), Perl, PHP, Positional notation, Production (computer science), Python (programming language), Reference (computer science), Ruby (programming language), Scala (programming language), Smalltalk, SQL, Standard ML, Symbol (formal), Tcl, ..., Text file, Text processing, Visual Basic .NET, 0. Expand index (4 more) »

APL (programming language)

APL (named after the book A Programming Language) is a programming language developed in the 1960s by Kenneth E. Iverson.

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ASCII

ASCII, abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication.

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C (programming language)

C (as in the letter ''c'') is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations.

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C Sharp (programming language)

C# (/si: ʃɑːrp/) is a multi-paradigm programming language encompassing strong typing, imperative, declarative, functional, generic, object-oriented (class-based), and component-oriented programming disciplines.

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C++

C++ ("see plus plus") is a general-purpose programming language.

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C++14

C++14 is a version of the ISO/IEC 14882 standard for the programming language C++.

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Character (symbol)

A character is a sign or symbol.

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Christmas

Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.

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Christmas and holiday season

The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.

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Christmas Eve

Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.

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Christmas traditions

Christmas traditions vary from country to country.

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Concatenation

In formal language theory and computer programming, string concatenation is the operation of joining character strings end-to-end.

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Concatenation theory

Concatenation theory, also called string theory, character-string theory, or theoretical syntax, studies character strings over finite alphabets of characters, signs, symbols, or marks.

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Context-free grammar

In formal language theory, a context-free grammar (CFG) is a certain type of formal grammar: a set of production rules that describe all possible strings in a given formal language.

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Data type

In computer science and computer programming, a data type or simply type is a classification of data which tells the compiler or interpreter how the programmer intends to use the data.

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Empty set

In mathematics, and more specifically set theory, the empty set or null set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero.

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False (logic)

In logic, false or untrue is the state of possessing negative truth value or a nullary logical connective.

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Formal language

In mathematics, computer science, and linguistics, a formal language is a set of strings of symbols together with a set of rules that are specific to it.

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Free monoid

In abstract algebra, the free monoid on a set is the monoid whose elements are all the finite sequences (or strings) of zero or more elements from that set, with string concatenation as the monoid operation and with the unique sequence of zero elements, often called the empty string and denoted by ε or λ, as the identity element.

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Go (programming language)

Go (often referred to as Golang) is a programming language created at Google in 2009 by Robert Griesemer, Rob Pike, and Ken Thompson.

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Haskell (programming language)

Haskell is a standardized, general-purpose compiled purely functional programming language, with non-strict semantics and strong static typing.

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Identity element

In mathematics, an identity element or neutral element is a special type of element of a set with respect to a binary operation on that set, which leaves other elements unchanged when combined with them.

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Java (programming language)

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.

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JavaScript

JavaScript, often abbreviated as JS, is a high-level, interpreted programming language.

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Lambda

Lambda, Λ, λ (uppercase Λ, lowercase λ; λάμ(β)δα lám(b)da) is the 11th letter of the Greek alphabet.

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Leading zero

A leading zero is any 0 digit that comes before the first nonzero digit in a number string in positional notation.

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Lexicographical order

In mathematics, the lexicographic or lexicographical order (also known as lexical order, dictionary order, alphabetical order or lexicographic(al) product) is a generalization of the way words are alphabetically ordered based on the alphabetical order of their component letters.

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Lua (programming language)

Lua (from meaning moon) is a lightweight, multi-paradigm programming language designed primarily for embedded use in applications.

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MATLAB

MATLAB (matrix laboratory) is a multi-paradigm numerical computing environment and proprietary programming language developed by MathWorks.

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MediaWiki

MediaWiki is a free and open-source wiki software.

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Memory address

In computing, a memory address is a reference to a specific memory location used at various levels by software and hardware.

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New Year

New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.

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New Year's Day

New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.

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New Year's Eve

In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.

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Newline

Newline (frequently called line ending, end of line (EOL), line feed, or line break) is a control character or sequence of control characters in a character encoding specification, e.g. ASCII or EBCDIC.

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Null character

The null character (also null terminator or null byte), abbreviated NUL, is a control character with the value zero.

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Null pointer

In computing, a null pointer has a value reserved for indicating that the pointer does not refer to a valid object.

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Null-terminated string

In computer programming, a null-terminated string is a character string stored as an array containing the characters and terminated with a null character ('\0', called NUL in ASCII).

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Numerical digit

A numerical digit is a single symbol (such as "2" or "5") used alone, or in combinations (such as "25"), to represent numbers (such as the number 25) according to some positional numeral systems.

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Object Pascal

Object Pascal refers to a branch of object-oriented derivatives of Pascal, mostly known as the primary programming language of Delphi.

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Objective-C

Objective-C is a general-purpose, object-oriented programming language that adds Smalltalk-style messaging to the C programming language.

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OCaml

OCaml, originally named Objective Caml, is the main implementation of the programming language Caml, created by Xavier Leroy, Jérôme Vouillon, Damien Doligez, Didier Rémy, Ascánder Suárez and others in 1996.

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Paragraph

A paragraph (from the Ancient Greek παράγραφος paragraphos, "to write beside" or "written beside") is a self-contained unit of a discourse in writing dealing with a particular point or idea.

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Pascal (programming language)

Pascal is an imperative and procedural programming language, which Niklaus Wirth designed in 1968–69 and published in 1970, as a small, efficient language intended to encourage good programming practices using structured programming and data structuring. It is named in honor of the French mathematician, philosopher and physicist Blaise Pascal. Pascal was developed on the pattern of the ALGOL 60 language. Wirth had already developed several improvements to this language as part of the ALGOL X proposals, but these were not accepted and Pascal was developed separately and released in 1970. A derivative known as Object Pascal designed for object-oriented programming was developed in 1985; this was used by Apple Computer and Borland in the late 1980s and later developed into Delphi on the Microsoft Windows platform. Extensions to the Pascal concepts led to the Pascal-like languages Modula-2 and Oberon.

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Perl

Perl is a family of two high-level, general-purpose, interpreted, dynamic programming languages, Perl 5 and Perl 6.

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PHP

PHP: Hypertext Preprocessor (or simply PHP) is a server-side scripting language designed for Web development, but also used as a general-purpose programming language.

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Positional notation

Positional notation or place-value notation is a method of representing or encoding numbers.

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Production (computer science)

A production or production rule in computer science is a rewrite rule specifying a symbol substitution that can be recursively performed to generate new symbol sequences.

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Python (programming language)

Python is an interpreted high-level programming language for general-purpose programming.

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Reference (computer science)

In computer science, a reference is a value that enables a program to indirectly access a particular datum, such as a variable's value or a record, in the computer's memory or in some other storage device.

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Ruby (programming language)

Ruby is a dynamic, interpreted, reflective, object-oriented, general-purpose programming language.

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Scala (programming language)

Scala is a general-purpose programming language providing support for functional programming and a strong static type system.

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Smalltalk

Smalltalk is an object-oriented, dynamically typed, reflective programming language.

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SQL

SQL (S-Q-L, "sequel"; Structured Query Language) is a domain-specific language used in programming and designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS).

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Standard ML

Standard ML (SML; "Standard Meta Language") is a general-purpose, modular, functional programming language with compile-time type checking and type inference.

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Symbol (formal)

A logical symbol is a fundamental concept in logic, tokens of which may be marks or a configuration of marks which form a particular pattern.

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Tcl

Tcl (pronounced "tickle" or tee cee ell) is a high-level, general-purpose, interpreted, dynamic programming language.

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Text file

A text file (sometimes spelled "textfile"; an old alternative name is "flatfile") is a kind of computer file that is structured as a sequence of lines of electronic text.

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Text processing

In computing, the term text processing refers to the discipline of mechanizing the creation or manipulation of electronic text.

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Visual Basic .NET

Visual Basic.NET (VB.NET) is a multi-paradigm, object-oriented programming language, implemented on the.NET Framework.

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0

0 (zero) is both a number and the numerical digit used to represent that number in numerals.

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2018

2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.

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2019

2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.

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"", '', Empty word, Null string, Nullable symbol, The empty string.

References

[1] https://en.wikipedia.org/wiki/Empty_string

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