Cannot instantiate a std.container.Array of a class with a init() function member.

Mar 02, 2015

Francesco Cattoglio

Mar 02, 2015

Tobias Pankrath

Mar 02, 2015

Mar 02, 2015

Mar 02, 2015

Mar 02, 2015

Mar 03, 2015

Taken from http://forum.dlang.org/thread/gjrbmskictrbcyeduqgu@forum.dlang.org trying to instantiate an Array!MyClass fails with a rather obscure error message if the MyClass has a member function "void init()": http://dpaste.dzfl.pl/16d202b7124d Is this a std library bug, or should this be considered a mistake on the library user side to name a member function "init"?

On Monday, 2 March 2015 at 15:46:28 UTC, Francesco Cattoglio wrote: > Taken from > http://forum.dlang.org/thread/gjrbmskictrbcyeduqgu@forum.dlang.org > > trying to instantiate an Array!MyClass fails with a rather obscure error message if the MyClass has a member function "void init()": > > http://dpaste.dzfl.pl/16d202b7124d > > Is this a std library bug, or should this be considered a mistake on the library user side to name a member function "init"? I consider both your type and the library buggy. The type because .init is a property of every type with a special meaning, which is violated by your class. The library because it emits such a useful error message. Please file a bug report.

On Monday, 2 March 2015 at 15:46:28 UTC, Francesco Cattoglio wrote: > Taken from > http://forum.dlang.org/thread/gjrbmskictrbcyeduqgu@forum.dlang.org > > trying to instantiate an Array!MyClass fails with a rather obscure error message if the MyClass has a member function "void init()": > > http://dpaste.dzfl.pl/16d202b7124d > > Is this a std library bug, or should this be considered a mistake on the library user side to name a member function "init"? It's kind of ridiculous that the compiler doesn't complain about this, considering that defining an init member causes an error that you would have no idea how to fix unless you already knew about this issue.

March 02, 2015

Re: Cannot instantiate a std.container.Array of a class with a init() function member.

Posted by H. S. Teoh
in reply to Meta

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H. S. Teoh

Posted in reply to Meta

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On Mon, Mar 02, 2015 at 04:26:40PM +0000, Meta via Digitalmars-d wrote:
> On Monday, 2 March 2015 at 15:46:28 UTC, Francesco Cattoglio wrote:
> >Taken from http://forum.dlang.org/thread/gjrbmskictrbcyeduqgu@forum.dlang.org
> >
> >trying to instantiate an Array!MyClass fails with a rather obscure error message if the MyClass has a member function "void init()":
> >
> >http://dpaste.dzfl.pl/16d202b7124d
> >
> >Is this a std library bug, or should this be considered a mistake on the library user side to name a member function "init"?
> 
> It's kind of ridiculous that the compiler doesn't complain about this, considering that defining an init member causes an error that you would have no idea how to fix unless you already knew about this issue.

I say file the bug against the compiler, not the library. The compiler should reject members named 'init' because .init already has a special meaning in the language.


T

-- 
Being able to learn is a great learning; being able to unlearn is a greater learning.

On 03/02/2015 09:48 AM, H. S. Teoh via Digitalmars-d wrote: > The compiler > should reject members named 'init' because .init already has a special > meaning in the language. Existing issue: https://issues.dlang.org/show_bug.cgi?id=12545 Ali

On Mon, 02 Mar 2015 16:26:40 +0000, Meta wrote: > On Monday, 2 March 2015 at 15:46:28 UTC, Francesco Cattoglio wrote: >> Taken from http://forum.dlang.org/thread/gjrbmskictrbcyeduqgu@forum.dlang.org >> >> trying to instantiate an Array!MyClass fails with a rather obscure error message if the MyClass has a member function "void init()": >> >> http://dpaste.dzfl.pl/16d202b7124d >> >> Is this a std library bug, or should this be considered a mistake on the library user side to name a member function "init"? > > It's kind of ridiculous that the compiler doesn't complain about this, considering that defining an init member causes an error that you would have no idea how to fix unless you already knew about this issue. standard policy: "D is only for smarts".

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