Ranges of char and wchar

[Andrei Alexandrescu via Digitalmars-d]

On 5/8/14, 11:27 AM, Walter Bright wrote:
> On 5/8/2014 10:46 AM, Andrei Alexandrescu wrote:
>> A discussion is building around
>> https://github.com/D-Programming-Language/phobos/pull/2149, which is a
>> nice
>> initiative by Walter to allow Phobos users to avoid or control memory
>> allocation.
>
> The setExtension() function is itself not very important, but what is
> important is an example for how to put together ranges.
>
> Some design goals:
>
> 1. purity, @safe, nothrow, @nogc
> 2. composability
> 3. have them work in a consistent way, so there's less for a user to learn

4. Rule of least surprise

Some may be surprised that auto c = setExtension(a, b) doesn't actually 
just do it. So changing a and/or b before using c would yield surprising 
result for someone coming from a background of eager-string languages.


Andrei