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  2. Comparison of programming languages (associative array)

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

    The arrays are heterogeneous: a single array can have keys of different types. PHP's associative arrays can be used to represent trees, lists, stacks, queues, and other common data structures not built into PHP. An associative array can be declared using the following syntax:

  3. Safe navigation operator - Wikipedia

    en.wikipedia.org/wiki/Safe_navigation_operator

    The following example retrieves the name of the author of the first article in an array of articles (provided that each article has an Author member and that each author has an Name member), and results in null if the array is null, if its first element is null, if the Author member of that article is null, or if the Name member of that author ...

  4. Comparison of programming languages (array) - Wikipedia

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

    For example, to perform an element by element sum of two arrays, a and b to produce a third c, it is only necessary to write c = a + b In addition to support for vectorized arithmetic and relational operations, these languages also vectorize common mathematical functions such as sine.

  5. C syntax - Wikipedia

    en.wikipedia.org/wiki/C_syntax

    The primary facility for accessing the values of the elements of an array is the array subscript operator. To access the i-indexed element of array, the syntax would be array[i], which refers to the value stored in that array element. Array subscript numbering begins at 0 (see Zero-based indexing). The largest allowed array subscript is ...

  6. Undefined value - Wikipedia

    en.wikipedia.org/wiki/Undefined_value

    For example, reading a shared variable protected by seqlock will produce an undefined value before determining that a race condition happened. It will then discard the undefined data and retry the operation. This produces a defined result as long as the operations performed on the undefined values do not produce full-fledged undefined behaviour.

  7. PHP syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/PHP_syntax_and_semantics

    PHP treats newlines as whitespace, in the manner of a free-form language. The concatenation operator is . (dot). Array elements are accessed and set with square brackets in both associative arrays and indexed arrays. Curly brackets can be used to access array elements, but not to assign.

  8. Syntactic sugar - Wikipedia

    en.wikipedia.org/wiki/Syntactic_sugar

    For example, many programming languages provide special syntax for referencing and updating array elements. Abstractly, an array reference is a procedure of two arguments: an array and a subscript vector, which could be expressed as get_array(Array, vector(i,j)). Instead, many languages provide syntax such as Array[i,j].

  9. Comparison of programming languages (object-oriented ...

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

    class name definition «inheriting from parentclass». «interfaces: interfaces.» method_and_field_declarations endclass. class name implementation. method_implementations endclass. interface name . members endinterface.

  1. Related searches array subscript is undefined in php meaning in c# with example free

    array subscript is undefined in php meaning in c# with example free download