Procs not Crocs


I remember learning about nested functions, closures, lambdas, et al. in Python, and made a few useful little generator functions, but haven't had occasion to yet learn about blocks, procs, or lambdas in Ruby. With the reception of the Dev Bootcamp prep material, I figured I had better check it out.

{% highlight ruby %}def addgen(yourinc) return {|x| your_inc + x } end

bytwo = addgen(2) by87 = addgen(87)

puts #=> 12 puts #=> 97

{% endhighlight %}

I was massively overthinking things, trying to do nested functions like you see in Python. As it turns out, it's way easier to just use a sexy little proc, point a variable to the results of the function call (with your argument) and then call the variable as a proc. I'm not sure what I was thinking.