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ROPE Language Reference - "islower"

"islower" pops a string off the top of the stack and checks whether every character it contains is a lower-case letter. If so: 1 (true) is pushed back onto the stack, otherwise 0 is pushed back.

As a special case: if the string is empty, the return is 0.

Example:

 "Hello" islower println        # -- prints: 0
 "coffee" islower println       # -- prints: 1
 "cof90" islower println        # -- prints: 0
 islower( "abc" ) println       # -- prints: 1
 islower( "abc" "def" ) println # -- error! too many arguments
 239 islower println            # -- error! not a string

See Also

isalnum, isalpha, isascii, iscntrl, isdigit, iseoln, isgraph, isprint, ispunct, isspace, isupper, isxdigit

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