associative array - definitie. Wat is associative array
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Wat (wie) is associative array - definitie

DATA TYPE THAT ASSOCIATES KEYS WITH VALUES
Dictionary (data structure); Associative arrays; Map (computer science); Assoc list; Associative container; Map (data structure); Hash array; Hasharray; Key-value association; Key-value data; Associative map; Key–value data; Associative list; Dictionary (computer science); Language support for associative arrays; Map (computing); Associative table
  • This graph compares the average number of [[CPU cache]] misses required to look up elements in large hash tables (far exceeding size of the cache) with chaining and [[linear probing]]. Linear probing performs better due to better [[locality of reference]], though as the table gets full, its performance degrades drastically.

associative array         
<programming> (Or "hash", "map", "dictionary") An array where the indices are not just integers but may be arbitrary strings. awk and its descendants (e.g. Perl) have associative arrays which are implemented using hash coding for faster look-up. (2007-10-02)
Associative array         
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.
https://en.wikipedia.org/wiki/Associative_array
content addressable memory         
  • CMOS binary CAM Cell consisting of a 6T SRAM cell plus 4 comparison transistors. When the data on the search lines (SL) differs from the data stored in the cell through the bit lines (BL), the match line (ML) will be pulled low to indicate a mismatch. If none of the cells on a match line indicate a mismatched bit, the match line will remain high at the precharge level to indicate a word match. Both search lines can be held at logic '0' as a don't care search condition. Search lines and bit lines can be merged into a single pair of data lines.
  • CMOS Ternary CAM cell consisting of two 6T SRAM cells plus 4 comparison transistors. Normally opposite logic levels, either '0' and '1' or '1' and '0' will be stored in the two cells. For a don't care condition '0' will be stored in both cells so that the match line ML will not be pulled low for any combination of search line (SL) data.
SPECIAL TYPE OF COMPUTER MEMORY USED IN CERTAIN VERY-HIGH-SPEED SEARCHING APPLICATIONS
Associative storage; Content adressable memory; Content addressable memory; CAM (computing); Content-Addressable Memory; Associative Memory Base; Associative memory base; Ternary Content-Addressable Memory; Ternary content-addressable memory; Content-based addressing
(CAM, or "associative memory") A kind of storage device which includes comparison logic with each bit of storage. A data value is broadcast to all words of storage and compared with the values there. Words which match are flagged in some way. Subsequent operations can then work on flagged words, e.g. read them out one at a time or write to certain bit positions in all of them. A CAM can thus operate as a data parallel (SIMD) processor. CAMs are often used in caches and memory management units. (1995-02-16)

Wikipedia

Associative array

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. It supports 'lookup', 'remove', and 'insert' operations.

The dictionary problem is the classic problem of designing efficient data structures that implement associative arrays. The two major solutions to the dictionary problem are hash tables and search trees. In some cases it is also possible to solve the problem using directly addressed arrays, binary search trees, or other more specialized structures.

Many programming languages include associative arrays as primitive data types, and they are available in software libraries for many others. Content-addressable memory is a form of direct hardware-level support for associative arrays.

Associative arrays have many applications including such fundamental programming patterns as memoization and the decorator pattern.

The name does not come from the associative property known in mathematics. Rather, it arises from the fact that values are associated with keys. It is not to be confused with associative processors.

https://en.wikipedia.org/wiki/Associative array
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