Logo

Programming-Idioms

This language bar is your friend. Select your favorite languages!
  • Groovy

Idiom #205 Get an environment variable

Read an environment variable with the name "FOO" and assign it to the string variable foo. If it does not exist or if the system does not support environment variables, assign a value of "none".

def foo = System.getenv('FOO') ?: 'none'

Uses Groovy's elvis operator to supply a default value.
with Ada.Environment_Variables;
Foo : constant String :=
      Ada.Environment_Variables.Value (Name    => "FOO",
                                       Default => "none");

New implementation...
< >
tkoenig