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" instruction 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?.