catch

NAME

catch - catch errors in code

SYNOPSIS

string catch(expression)

DESCRIPTION

Execute the code for <expression> until an error results, or until execution is complete. If an error resulted, catch() will return the error message as a string; otherwise, it will return 0.

ERRORS

A limited number of nested catches is allowed. The limit is implementation-defined, and should be sufficient for ordinary purposes.

SEE ALSO

error

NOTE

catch() is not a real kfun. catch(a, b) will evaluate the expression (a, b), rather than "call catch() with arguments a and b".

HTMLised 1998 Greg Lewis (glewis@maths.adelaide.edu.au)