On Wednesday, 3 October 2018 at 11:01:53 UTC, Chris Katko wrote:
I've got this simple task but I'm trying to perfect it as best
I can to learn something in the process.
I have Linux terminal ASCII codes for coloring terminal output.
string red(string) { /* ... */ }
"Hello world".red => "\033[31mHello World\033[0m"
which translates to "[red]Hello World[reset to normal text]".
I have to do some slight trickery so I can chain them. But it
all works fine. __The function is the same__ no matter what
kind of color, bold, etc attribute I want. The only difference
is the tag/prefix string.
So I have a table (or enum):
enum colors{
reset = "\033[0m",
red = "\033[31m",
bold = "\033[1m" //...
}
Absolute perfection would be some way to add a single line to
that enum (or table) and magically get a new function. I add
"blue" with its prefix code to the enum and immediately I can
do:
"hello world".blue
Add yellow = "\033..." and I can do:
"hello world".bold.yellow
https://run.dlang.io/gist/run-dlang/e0d0bcebe6c4edcc3cd0c2858183357d?compiler=dmd
https://issues.dlang.org/show_bug.cgi?id=19286 prevents us from
using static foreaches to declare the aliases.
