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  2. Dictionary coder - Wikipedia

    en.wikipedia.org/wiki/Dictionary_coder

    A dictionary coder, also sometimes known as a substitution coder, is a class of lossless data compression algorithms which operate by searching for matches between the text to be compressed and a set of strings contained in a data structure (called the 'dictionary') maintained by the encoder. When the encoder finds such a match, it substitutes ...

  3. Trie - Wikipedia

    en.wikipedia.org/wiki/Trie

    Accordingly, the set bit is used to index the first item, or child node, in the 32- or 64-entry based bitwise tree. Search then proceeds by testing each subsequent bit in the key. [19] This procedure is also cache-local and highly parallelizable due to register independency, and thus performant on out-of-order execution CPUs. [19]

  4. Data structure diagram - Wikipedia

    en.wikipedia.org/wiki/Data_structure_diagram

    Data structure diagram and a data dictionary. A data structure diagram is a diagram type that is used to depict the structure of data elements in the data dictionary. The data structure diagram is a graphical alternative to the composition specifications within such data dictionary entries. [1] The data structure diagrams is a predecessor of ...

  5. Linked list - Wikipedia

    en.wikipedia.org/wiki/Linked_list

    record Entry { integer next; // index of next entry in array integer prev; // previous entry (if double-linked) string name; real balance; } A linked list can be built by creating an array of these structures, and an integer variable to store the index of the first element.

  6. PlantUML - Wikipedia

    en.wikipedia.org/wiki/PlantUML

    PlantUML is an open-source tool allowing users to create diagrams from a plain text language. Besides various UML diagrams, PlantUML has support for various other software development related formats (such as Archimate, Block diagram, BPMN, C4, Computer network diagram, ERD, Gantt chart, Mind map, and WBD), as well as visualisation of JSON and YAML files.

  7. Symbol table - Wikipedia

    en.wikipedia.org/wiki/Symbol_table

    For example, symbol table entries representing initialized data are denoted by the character "d" and symbol table entries for functions have the symbol type "t" (because executable code is located in the text section of an object file). Additionally, the capitalization of the symbol type indicates the type of linkage: lower-case letters ...

  8. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    For example, one could define a dictionary having a string "toast" mapped to the integer 42 or vice versa. The keys in a dictionary must be of an immutable Python type, such as an integer or a string, because under the hood they are implemented via a hash function. This makes for much faster lookup times, but requires keys not change.

  9. 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.