SOME?

Tests if the topmost stack item's length is larger than zero.

Input stack: a

Output stack: c

SOME? will push 1 if the item's length is larger than zero, 0 otherwise.

It has a "sister" word of NONE?. Together they allow to express a concept of an optional value.

PumpkinDB> [] SOME?
0
PumpkinDB> [1] SOME?
1

Allocation

None

Errors

EmptyStack error if there is less than one items on the stack

Tests

works : [1] SOME?.
works_1 : [] SOME? NOT.
empty_stack : [SOME?] TRY UNWRAP 0x04 EQUAL?.

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