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  2. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    and you can see that b, as visible from the closure's scope, retains the value it had; the changed binding of b inside the inner function did not propagate out. The way around this is to use a nonlocal b statement in bar. In Python 2 (which lacks nonlocal), the usual workaround is to use a mutable value and change that value, not the binding. E ...

  3. Syntax error - Wikipedia

    en.wikipedia.org/wiki/Syntax_error

    This computer-programming -related article is a stub. You can help Wikipedia by expanding it.

  4. Lisp (programming language) - Wikipedia

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

    For this reason, the car and cdr functions are also called first and rest when referring to conses which are part of a linked list (rather than, say, a tree). Thus, a Lisp list is not an atomic object, as an instance of a container class in C++ or Java would be. A list is nothing more than an aggregate of linked conses.

  5. Data analysis - Wikipedia

    en.wikipedia.org/wiki/Data_analysis

    This is an attempt to model or fit an equation line or curve to the data, such that Y is a function of X. [74] [75] Necessary condition analysis (NCA) may be used when the analyst is trying to determine the extent to which independent variable X allows variable Y (e.g., "To what extent is a certain unemployment rate (X) necessary for a certain ...

  6. Unicode - Wikipedia

    en.wikipedia.org/wiki/Unicode

    There are a total of 2 20 + (2 16 − 2 11) = 1 112 064 valid code points within the codespace. (This number arises from the limitations of the UTF-16 character encoding, which can encode the 2 16 code points in the range U+0000 through U+FFFF except for the 2 11 code points in the range U+D800 through U+DFFF , which are used as surrogate pairs ...

  7. Empty category - Wikipedia

    en.wikipedia.org/wiki/Empty_category

    This does not happen in English because the agreement-markings in English are not sufficient for a listener to be able to deduce the meaning of a missing referent. [ 7 ] [ 16 ] Chinese is an example of a pro-drop language , where both subjects and objects can be dropped from the pronounced part of finite sentences, and their meaning remains ...

  8. One Definition Rule - Wikipedia

    en.wikipedia.org/wiki/One_Definition_Rule

    In any translation unit, a template, type, function, or object can have no more than one definition. Some of these can have any number of declarations. A definition provides an instance. In the entire program, an object or non-inline function cannot have more than one definition; if an object or function is used, it must have exactly one ...

  9. Science - Wikipedia

    en.wikipedia.org/wiki/Science

    Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. [1] [2] Modern science is typically divided into two or three major branches: [3] the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; and the behavioural sciences (e.g., economics, psychology, and sociology ...