KASH3 Ref - First

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| ### Function First ( func pred, string s ) -> char ### Optional Arguments
Fail | any |  | Determines what to return in case of failure.
### Description Find the first character which suffices the predicate function `pred' and return it. Note: Apparently `pred' must have `-> elt-alg^boo' out-signature. ### Examples First(i->(i='d' or i='z'),"abcdefzyx"); ### See also Last ( func, string ) -> char
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