On Thu, 18 Dec 2014 22:46:04 +0000 Jonathan Marler via Digitalmars-d <digitalmars-d@puremagic.com> wrote:
> What are peoples thoughts on having an inferred type for "cast"?
> Good/Bad idea? If good, how helpful would this be? Would this
> break existing code somehow? I think this feature would be a nice
> added convenience. Not super helpful but nice to have.
>
> Here's the details
> -------------------
> Typed Cast: cast(T)v
> try to cast v to T
> Type Inferred Cast: cast(auto)v
> try to cast v to whatever type is required in the current
> context
>
> void foo(string s)
> {
> // ...
> }
> void main()
> {
> const(char)[] s = "hello";
> foo(cast(string)s); // Current
> foo(cast(auto) s); // The type of the cast is inferred to be
> a string
> foo(cast() s); // Another possible syntax
> }
>
> This would help refactoribility. If a function argument changes
> it's type, and the caller is using a cast, then the caller's cast
> type will be updated automatically. Note that if it changes to
> an invalid type, the cast will still fail like normal.
using casts is a bad practice. and "auto casts" is... i can't even find
a word. the only thing this will help is to hide bugs, i believe.
please, don't.
nothing personal, i'm just terrified by the idea.
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