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  2. Comparison of programming languages (string functions)

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

    String.index string char: OCaml: raises Not_found: position = SCAN (string, set «, back» «, kind») position = VERIFY (string, set «, back» «, kind») Fortran: returns zero string indexOf: char ifAbsent: aBlock string indexOf: char string includes: char: Smalltalk: evaluate aBlock which is a BlockClosure (or any object understanding value ...

  3. Assignment (computer science) - Wikipedia

    en.wikipedia.org/wiki/Assignment_(computer_science)

    Functional programming languages that use single assignment include Clojure (for data structures, not vars), Erlang (it accepts multiple assignment if the values are equal, in contrast to Haskell), F#, Haskell, JavaScript (for constants), Lava, OCaml, Oz (for dataflow variables, not cells), Racket (for some data structures like lists, not ...

  4. Index set - Wikipedia

    en.wikipedia.org/wiki/Index_set

    [1] [2] For instance, if the elements of a set A may be indexed or labeled by means of the elements of a set J, then J is an index set. The indexing consists of a surjective function from J onto A, and the indexed collection is typically called an indexed family, often written as {A j} j∈J.

  5. String (computer science) - Wikipedia

    en.wikipedia.org/wiki/String_(computer_science)

    String functions are used to create strings or change the contents of a mutable string. They also are used to query information about a string. The set of functions and their names varies depending on the computer programming language.

  6. Hash function - Wikipedia

    en.wikipedia.org/wiki/Hash_function

    In these applications, the set of all inputs is some sort of metric space, and the hashing function can be interpreted as a partition of that space into a grid of cells. The table is often an array with two or more indices (called a grid file, grid index, bucket grid, and similar names), and the hash function returns an index tuple.

  7. Turing completeness - Wikipedia

    en.wikipedia.org/wiki/Turing_completeness

    In computability theory, a system of data-manipulation rules (such as a model of computation, a computer's instruction set, a programming language, or a cellular automaton) is said to be Turing-complete or computationally universal if it can be used to simulate any Turing machine [1] [2] (devised by English mathematician and computer scientist Alan Turing).

  8. Tab-separated values - Wikipedia

    en.wikipedia.org/wiki/Tab-separated_values

    Records are typically separated by a line feed, as is typical for Unix platforms, or a carriage return and line feed, as is typical for Microsoft platforms. Some programs may expect the latter. The de-facto specification [9] specifies that records are separated by an EOL, but does not specify any specific newline.

  9. Indicator function - Wikipedia

    en.wikipedia.org/wiki/Indicator_function

    In general, the indicator function of a set is not smooth; it is continuous if and only if its support is a connected component. In the algebraic geometry of finite fields, however, every affine variety admits a continuous indicator function. [3]