LanX isn't saying that delete ELEMENT returns a boolean; they're saying that since delete SLICE returns a list of what it would return for a single element (the deleted element), exists SLICE should also return a list of what it return for a single element (a boolean).

In reply to Re^4: Why doesn't exist work with hash slices? by ikegami
in thread Why doesn't exist work with hash slices? by Anonymous Monk

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