On Saturday, 7 July 2018 at 19:29:02 UTC, Adam D. Ruppe wrote:
On Saturday, 7 July 2018 at 18:48:35 UTC, Mr.Bingo wrote:
The enums are local in nature and are used to store
intermediate results but the looping tries to redefine them,
which gives an error.
Have you tried putting a second set of {} around it?
static foreach(...)
{{ // 2 intentional
enum y = whatever;
}} // 2 intentional
?
This doesn't always work as it conflates compile time scope and
runtime scope.
For example, suppose you want to create a series of runtime
variables:
static foreach(k,...)
{{
mixin("auto x"~k~" = ...");
}}
You want xk's to escape the foreach but they don't because of the
inner {}.
You can't move it out and expect things to work:
static foreach(k,...)
{{
{
enum y = 3;
}
mixin("auto x"~k~" = y");
}
better to achieve a proper solution that works in general.
One doesn't want to write code then later have to modify it and
then realize it can't be modified properly because of the lack of
straight forward principles.
