Maintenance Ruby 3.3 gets fixes, but no new features. Switch to Ruby 4.0 →
class method
ENV.size
ENV.length → an_integer
ENV.size → an_integer
hash.c
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static VALUE
env_size(VALUE _)
{
return INT2FIX(env_size_with_lock());
}
Returns the count of environment variables:
Example
ENV.replace('foo' => '0', 'bar' => '1') ENV.length # => 2 ENV.size # => 2