Re: std.string import cleanup: how to fix regression?

[via Digitalmars-d]

On Thursday, 13 November 2014 at 19:27:59 UTC, Ilya Yaroshenko 
wrote:
alias can not be deprecated :-(

It can. But evidently, static import cannot be selective:

aa.d:
    static import std.algorithm;// : startsWith, endsWith, cmp, 
count;
    static import std.array;// : join, split;

    deprecated {
        alias startsWith = std.algorithm.startsWith;
    }

bb.d:
    import aa;
    bool test() {
        return "".startsWith("");
    }

# dmd -c bb.d
bb.d(2): Deprecation: alias aa.startsWith is deprecated

Remove ";//" to enable the selective imports, and we get errors:
aa.d(1): Error: static import std cannot have an import bind list
aa.d(1): Error: static import __anonymous cannot have an import 
bind list
aa.d(1): Error: static import __anonymous cannot have an import 
bind list
aa.d(1): Error: static import __anonymous cannot have an import 
bind list
aa.d(2): Error: static import std cannot have an import bind list
aa.d(2): Error: static import __anonymous cannot have an import 
bind list

This seems like an arbitrary restriction. [1] states that it is 
disallowed (under the heading "Selective Imports"), but gives no 
justification. It's probably because of the implementation.

Anyway, the imports can be pulled into the `deprecated` block to 
make the intention clear:

    deprecated {
        static import std.algorithm;
        static import std.array;

        alias startsWith = std.algorithm.startsWith;
    }


[1] http://dlang.org/module