Returns the boolean value of the environment declaration name.
The boolean value of the declaration is true
if the declared value is
the string "true"
, and false
if the value is "false"
.
In all other cases, including when there is no declaration for name
,
the result is the defaultValue.
Example:
const loggingFlag = const bool.fromEnvironment("logging");
If you want to use a different truth-string, you can use the String.fromEnvironment constructor directly:
const isLoggingOn = (const String.fromEnvironment("logging") == "on");