take_while_il: Conditional head lens
In cfhammill/fresnel: Elegant Data Manipulation with Lenses

A lens into the elements from the beginning of a structure until the last element that satisfies a predicate.

1	take_while_il(f)

`f`	the predicate (logical) function

This lens is illegal because set-view is not satisfied, multiple runs of the same lens will reference potentially different elements.

cfhammill/fresnel documentation built on May 15, 2019, 1:13 p.m.

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