Standard Library

class SystemEnv

The real process environment behind the IEnv interface.

since 0.1.0-alpha.1linuxwindows

bases

IEnv

Examples

IEnv e = SystemEnv();
console.writeln(e.args().length() >= 1);
console.writeln(e.variable("LEVIATHAN_DOCS_UNSET_VARIABLE") == None);

true
true

Methods

args

args() -> Array<string>

The real command-line arguments, with the program name first.

Returns

The program name followed by its arguments.

Examples

SystemEnv e = SystemEnv();
console.writeln(e.args().length() >= 1);

true

See also: args

variable

variable(string name) -> string | None

Read a real environment variable.

Parameters

name

The name of the variable.

Returns

The value, or None when the variable is not set.

Examples

SystemEnv e = SystemEnv();
console.writeln(e.variable("LEVIATHAN_DOCS_UNSET_VARIABLE") == None);

true

See also: get

See also

• IEnv — What a program may learn from the process environment: its arguments and its variables.
• env — The running process: its command-line arguments, its environment variables, and how it exits.