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  2. Switch statement - Wikipedia

    en.wikipedia.org/wiki/Switch_statement

    A lookup table, which contains, as keys, the case values and, as values, the part under the case statement. (In some languages, only actual data types are allowed as values in the lookup table. In other languages, it is also possible to assign functions as lookup table values, gaining the same flexibility as a real switch statement.

  3. Associative array - Wikipedia

    en.wikipedia.org/wiki/Associative_array

    Lookup, find, or get find the value (if any) that is bound to a given key. The argument to this operation is the key, and the value is returned from the operation. If no value is found, some lookup functions raise an exception, while others return a default value (such as zero, null, or a specific value passed to the constructor).

  4. Comparison of programming languages (associative array)

    en.wikipedia.org/wiki/Comparison_of_programming...

    The user can search for elements in an associative array, and delete elements from the array. The following shows how multi-dimensional associative arrays can be simulated in standard AWK using concatenation and the built-in string-separator variable SUBSEP:

  5. Hash table - Wikipedia

    en.wikipedia.org/wiki/Hash_table

    Hashing is an example of a space-time tradeoff. If memory is infinite, the entire key can be used directly as an index to locate its value with a single memory access. On the other hand, if infinite time is available, values can be stored without regard for their keys, and a binary search or linear search can be used to retrieve the element.

  6. List of data structures - Wikipedia

    en.wikipedia.org/wiki/List_of_data_structures

    Reference, sometimes erroneously referred to as a pointer or handle, is a value that refers to another value, possibly including itself; Symbol, a unique identifier; Enumerated type, a set of symbols; Complex, representation of complex numbers

  7. Lookup table - Wikipedia

    en.wikipedia.org/wiki/Lookup_table

    For example, a grayscale picture of the planet Saturn could be transformed into a color image to emphasize the differences in its rings. In image processing, lookup tables are often called LUTs (or 3DLUT), and give an output value for each of a range of index values.

  8. Lazy evaluation - Wikipedia

    en.wikipedia.org/wiki/Lazy_evaluation

    In Python 3.x the range() function [28] returns a generator which computes elements of the list on demand. Elements are only generated when they are needed (e.g., when print(r[3]) is evaluated in the following example), so this is an example of lazy or deferred evaluation:

  9. Skip list - Wikipedia

    en.wikipedia.org/wiki/Skip_list

    The "QMap" key/value dictionary (up to Qt 4) template class of Qt is implemented with skip lists. [13] Redis, an ANSI-C open-source persistent key/value store for Posix systems, uses skip lists in its implementation of ordered sets. [14] Discord uses skip lists to handle storing and updating the list of members in a server. [15]