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catch |
Name
catch() - catch an evaluation error
Synopsis
mixed catch( mixed expr );
mixed catch { ... };
Description
Note: catch is really a keyword and not an efun.
The code inside the { ... } or the expression is evaluated. If there is no error, catch() returns zero. If there is an error, a string (with a leading '*') will be returned.
The function throw() can also be used to immediately return any value, except 0.
The catch() is somewhat costly, and should not be used just anywhere. Rather, use it at places where an error would destroy consistency.
