End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

class method

ENV.to_a

ENV.to_a → array of 2-element arrays

static VALUE
env_to_a(VALUE _)
{
    char **env;
    VALUE ary;

    ary = rb_ary_new();
    env = GET_ENVIRON(environ);
    while (*env) {
        char *s = strchr(*env, '=');
        if (s) {
            rb_ary_push(ary, rb_assoc_new(env_str_new(*env, s-*env),
                                          env_str_new2(s+1)));
        }
        env++;
    }
    FREE_ENVIRON(environ);
    return ary;
}

Returns the contents of ENV as an Array of 2-element Arrays, each of which is a name/value pair:

Example

ENV.replace('foo' => '0', 'bar' => '1')
ENV.to_a # => [["bar", "1"], ["foo", "0"]]

See also .store .to_h .slice .to_hash also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1

‹ prev.store next ›.to_h