Re: Whats the best way to get a struct/class member type?

[simendsjo]

On Mon, 02 Apr 2012 00:04:58 +0200, Simen Kjærås <simen.kja...@gmail.com>  
wrote:

On Sat, 31 Mar 2012 15:20:42 +0200, simendsjo <simend...@gmail.com>  
wrote:

Seems __traits doesn't have a __traits(getMemberType, T, name).
Now I'm doing the following:
T t; // instance to use in getMember
alias typeof( __traits(getMember, t, name) ) MemberType;

Is this the only way to get the type of a field based on the name?

I'd think so, apart from tupleof, as Jacob's already mentioned.

It's easily factored out, though:

template getMemberType(T, string name) if (is(typeof(__traits(getMember,  
T, name)))) {
     alias typeof(__traits(getMember, T, name)) getMemberType;
}


getMember requires an instance, not a type, so it should be

template getMemberType(T, string name) if(__traits(hasMember, T, name) {
    T t;
    alias typeof(__traits(getMember, t, name)) getMemberType;
}