Range (computer programming): Difference between revisions

Revision as of 02:46, 19 December 2006

Revision as of 23:17, 9 March 2007

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== Range of an array ==

When an array is numerically [[Index (information technology)|indexed]], its range is the upper and lower bound of the array. In most [[programming languages]] a warning, or possibly a [[fatal error]] (or [[bsod|worse]]!) will occur if you try to access an array element that is outside the range. In some languages, such as [[C (programming language)|C]], arrays have a fixed bottomlower bound (zero) and will contain data at each position up to the upper bound (so an array with 5 elements will have a range of 0 to 4). In others, such as [[PHP]], an array may have holes where no element is defined, and therefore an array with a range of 0 to 4 will have ''up to'' 5 elements (and a minimum of 2).

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