any

builtins.any

Primop

Docs pulled from | This Revision | 18 minutes ago

Returns true if function pred returns true for at least one element of list.

any :: (a -> Bool) -> [a] -> Bool

any isString [ 1 "a" { } ]
=> true
any isString [ 1 { } ]
=> false

(lib.lists.any)

Takes 2 arguments

pred, list

Return true if the function pred returns true for at least one element of list, and false otherwise.

O(n * T_pred) where:

returns early when pred returns true

This function is implemented in c++ and is part of the native nix runtime.

static void prim_any(EvalState & state, const PosIdx pos, Value ** args, Value & v)
{
    anyOrAll(true, state, pos, args, v);
}