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  2. Associative array - Wikipedia

    en.wikipedia.org/wiki/Associative_array

    Another very simple implementation technique, usable when the keys are restricted to a narrow range, is direct addressing into an array: the value for a given key k is stored at the array cell A[k], or if there is no mapping for k then the cell stores a special sentinel value that indicates the lack of a mapping. This technique is simple and ...

  3. Literal (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Literal_(computer_programming)

    In computer science, a literal is a textual representation (notation) of a value as it is written in source code. [1] [2] Almost all programming languages have notations for atomic values such as integers, floating-point numbers, and strings, and usually for Booleans and characters; some also have notations for elements of enumerated types and compound values such as arrays, records, and objects.

  4. Magic number (programming) - Wikipedia

    en.wikipedia.org/wiki/Magic_number_(programming)

    The use of unnamed magic numbers in code obscures the developers' intent in choosing that number, [2] increases opportunities for subtle errors (e.g. is every digit correct in 3.14159265358979323846 and can be rounded to 3.14159? [clarification needed] [3]) and makes it more difficult for the program to be adapted and extended in the future. [4]

  5. Linear probing - Wikipedia

    en.wikipedia.org/wiki/Linear_probing

    Linear probing is a component of open addressing schemes for using a hash table to solve the dictionary problem.In the dictionary problem, a data structure should maintain a collection of key–value pairs subject to operations that insert or delete pairs from the collection or that search for the value associated with a given key.

  6. LZ77 and LZ78 - Wikipedia

    en.wikipedia.org/wiki/LZ77_and_LZ78

    Decompression consists of rebuilding the dictionary from the compressed sequence. From the sequence 0A1B0B1$ the first entry is always the terminator 0 {...} , and the first from the sequence would be 1 {0,A} . The A is added to the output. The second pair from the input is 1B and results in entry number 2 in the dictionary, {1,B}. The token "B ...

  7. Forth (programming language) - Wikipedia

    en.wikipedia.org/wiki/Forth_(programming_language)

    The basic data structure of Forth is the "dictionary" which maps "words" to executable code or named data structures. The dictionary is laid out in memory as a tree of linked lists with the links proceeding from the latest (most recently) defined word to the oldest, until a sentinel value, usually a NULL pointer, is found. A context switch ...

  8. liblzg - Wikipedia

    en.wikipedia.org/wiki/Liblzg

    liblzg is a compression library for performing lossless data compression.It implements an algorithm that is a variation of the LZ77 algorithm, called the LZG algorithm, with the primary focus of providing a very simple and fast decoding method.

  9. String interning - Wikipedia

    en.wikipedia.org/wiki/String_interning

    In computer science, string interning is a method of storing only one copy of each distinct string value, which must be immutable. [1] Interning strings makes some string processing tasks more time-efficient or space-efficient at the cost of requiring more time when the string is created or interned.