fireproofsocks
Changing colors with IO.ANSI?
I’m looking over the docs for IO.ANSI and so far I’ve been unable to modify my output colors or background.
I have my commands in a foo.exs file which I’m running via mix run foo.exs. I’ve tried variations of things like the following in my foo.exs:
IO.ANSI.yellow()
IO.puts("Hello?")
but nothing seems to actually change the output color. What am I missing?
Thanks!
Marked As Solved
NobbZ
Those functions do not have a side effect, their return value has to be in the string.
IO.puts("#{IO.ANSI.yellow()}Hello?")
Also Liked
fireproofsocks
axelson
hauleth
You could even use IO.ANSI.format/1 to make it clearer:
IO.puts IO.ANSI.red() <> "hello"
Is (almost) the same as:
IO.puts IO.ANSI.format([:red, "hello])
With the difference that IO.ANSI.format/1 will automatically check if current shell supports the ANSI escape codes, so:
elixir script.exs | cat
Will result with non-coloured text.
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