Documentation Request SerialPort.available()

[einspunktnull]

Hi, i was looking for a method equivalent to Arduino's Serial.available(), which returns the amount of bytes received / readable, if there's nothing it returns -1.
First, I've looked in the docs, but couldn't find sth. similar. Than i've done a puts Serialport.instance_methods. This gave me a huge amount of methods like the usefull getc which I've not seen in the docs, but I also need. Finally I'm confused how to get full Information about API of SerialPort.
When I looked in the Source I couldn't find the getc too. Excuse me Im a ruby-noob, so maybe I've gone the false way.

[ghost]

it inherits from the IO class, so you should also look there for methods.

[ghost]

the documentation is now available online here: http://rubydoc.info/gems/serialport/SerialPort