Checks whether @ch is a valid Unicode character. Some possible integer values of @ch will not be valid. 0 is considered a valid character, though it's normally a string terminator.
a Unicode character
%TRUE if @ch is a valid Unicode character
See Implementation
Checks whether @ch is a valid Unicode character. Some possible integer values of @ch will not be valid. 0 is considered a valid character, though it's normally a string terminator.