I'm learning the details of how each works in ruby, and I tried out the following line of code: p [1,2,3,4,5].each { |element| el } And the result is an array of [1,2,3,4,5] Why is the return val...

I am trying to understand blocks and yield and how they work in Ruby. How is yield used? Many of the Rails applications I've looked at use yield in a weird way. Can someone explain to me or show ...

I have a method and in order to check whether it is being passed a block, I do the following: if block_given? res = yield(array[i], array[i+1]) else res = array[i] - array[i+1] end However R...

I want to check whether the block is called in my function using rspec. Below is my code: class SP def speak(options={},&block) puts "speak called" block.call() rescue ZeroDivisionError =...

I'm doing the following: array_variable = collection.map do |param| some value with param end return array_variable.compact Can I call map and compact in one statement somehow, so I can return ...

I'm trying to re-use an html component that i've written that provides panel styling. Something like: <div class="v-panel"> <div class="v-panel-tr"></div> <h3>Some Title...

I have a ruby method that needs to check if a block was passed to it. A colleague is suggesting that simply checking if block.nil? is slightly faster in performance and works for named blocks. Thi...