bearophile wrote:
Walter Bright:
bearophile wrote:
D language isn't even able to tell if an "out" argument has being used
before it is assigned inside the function (as C# compiler is able to,
because in C# using uninitialized variables is an error ) This is awful
and surely worse than multiple return values.
That's a misunderstanding of how "out" parameters work in D. All out
parameters are default initialized upon entry to the function. Therefore,
the user cannot access an uninitialized out parameter.
Out parameters are initialized at function entry, so in theory all is good
and there are no bugs, but this is a *workaround*, a language kludge, a hack,
something dirty that is done because of language limitation, or to keep the
language compatible with an ancient C design, or because the design is old.
I don't agree. For one thing, C and C++ do not even have out parameters.
