The entire list is visited with the any and the first solutions too (although the check function is only called until a match is found). for (@a) is saved due to the an optimisation that prevents the flattening of the list if it consists of just an array.

Update: Added reference to newly added first solution.

In reply to Re^5: Check if at least one element of array is bigger than X by ikegami
in thread Check if at least one element of array is bigger than X by Anonymous Monk

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