On 4/20/21 3:03 PM, Simen Kjærås wrote:
On Tuesday, 20 April 2021 at 18:57:46 UTC, ichneumwn wrote:
So my questions:
- is there a module-crossing equivalent of "version"?

mw covered this. There's more documentation here: https://dlang.org/spec/version.html#version
https://dlang.org/dmd-windows.html#switch-version


- if not, is there some way I could test for the existence of the enum can_i_test_for_this? A SymbolExists!() or ModuleHasSymbol!() or ModuleHasMember!() ?

__traits(hasMember, features, "i_am_not_a_feature")

This is actually what std.traits.hasMember does, but for some reason it can't take a module as its first argument.

--
   Simen

Could it be because __MODULE__ is string, requiring mixin? The following prints 'true':

enum i_am_not_a_feature = 42;

pragma(msg, __traits(hasMember, mixin(__MODULE__), "i_am_not_a_feature"));

Ali

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