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Issue 6340 - std.conv.to: integer to bool conversion
Summary: std.conv.to: integer to bool conversion
Status: RESOLVED WONTFIX
Alias: None
Product: D
Classification: Unclassified
Component: phobos (show other issues)
Version: D2
Hardware: Other Windows
: P2 enhancement
Assignee: No Owner
URL:
Keywords:
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Blocks:
 
Reported: 2011-07-17 13:33 UTC by Andrej Mitrovic
Modified: 2012-04-05 19:49 UTC (History)
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Description Andrej Mitrovic 2011-07-17 13:33:59 UTC 
import std.conv;

void main()
{
    auto x = to!bool(1);
}

D:\DMD\dmd2\windows\bin\..\..\src\phobos\std\conv.d(100): Error: template std.conv.toImpl(T,S) if (!implicitlyConverts!(S,T) && isSomeString!(T) && isInputRange!(Unqual!(S))
&& isSomeChar!(ElementType!(S))) does not match any function template declaration
D:\DMD\dmd2\windows\bin\..\..\src\phobos\std\conv.d(100): Error: template std.conv.toImpl(T,S) if (!implicitlyConverts!(S,T) && isSomeString!(T) && isInputRange!(Unqual!(S))
&& isSomeChar!(ElementType!(S))) cannot deduce template function from argument types !(bool)(int)
D:\DMD\dmd2\windows\bin\..\..\src\phobos\std\conv.d(100): Error: template instance errors instantiating template
testconv.d(10): Error: template instance std.conv.to!(bool).to!(int) error instantiating

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Any special reason why this isn't implemented? Was it deemed unsafe?
Comment 1 Andrej Mitrovic 2012-04-05 19:49:41 UTC 
Can just use a cast, conv.to is unnecessary.