How to avoid throwing an exceptions for a built-in function?
Andrei Alexandrescu via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Wed May 10 14:44:32 PDT 2017
On 5/10/17 3:40 PM, k-five wrote:
> I have a line of code that uses "to" function in std.conv for a purpose
> like:
>
> int index = to!int( user_apply[ 4 ] ); // string to int
>
> When the user_apply[ 4 ] has value, there is no problem; but when it is
> empty: ""
> it throws an ConvException exception and I want to avoid this exception.
>
> currently I have to use a dummy catch:
> try{
> index = to!int( user_apply[ 4 ] );
> } catch( ConvException conv_error ){
> // nothing
> }
>
> I no need to handle that, so is there any way to prevent this exception?
Use the "parse" family: https://dlang.org/phobos/std_conv.html#parse --
Andrei
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