When you’re playing around in IRB or Rails Console, you might come up with an output that you wanted to save as a variable, but didn’t (you’re playing around after all!). Now you have to retype your long statement all over again and this time save it to a variable.
So let’s get into IRB (just type irb in your terminal), type your name as a string, and press enter. Oh wait, but you wanted to save your name to a variable called name! Your choice is to just type name = “YOUR NAME” or click the up arrow to get the last input, then go to the beginning of the line (Control + A) and assign the name that way. Both are tedious and not fun. Feel free to do this just to feel the pain.
1.9.2p290 :006 > "NatashaTheRobot" => "NatashaTheRobot" 1.9.2p290 :007 > name = "NatashaTheRobot" => "NatashaTheRobot" 1.9.2p290 :008 > name => "NatashaTheRobot"
Now go to a new line in IRB, and type a friends name and click enter. But wait, you wanted to save it as a the variable friends_name. Here is the fun way to do this:
1.9.2p290 :003 > "Jenny" => "Jenny" 1.9.2p290 :004 > friends_name = _ => "Jenny" 1.9.2p290 :005 > friends_name => "Jenny"
Boom! Now your friends name is saved! This “x = _” trick also works in the Rails Console.
Do you use any cool IRB / Rails Console tricks? Please share in the comments!