strict (redirected from hard-and-fast)

strict

1. Logic maths of a relation

a. applying more narrowly than some other relation often given the same name, as strict inclusion, which holds only between pairs of sets that are distinct, while simple inclusion permits the case in which they are identical

b. distinguished from a relation of the same name that is not the subject of formal study

2. Botany rare very straight, narrow, and upright

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strict - A function f is strict in an argument if f bottom = bottom (See bottom). In other words, the result depends on the argument so evaluation of an application of the function cannot terminate until evaluation of the argument has terminated. If the result is only bottom when the argument is bottom then the function is also bottom-unique. See also strict evaluation, hyperstrict.