Merge branch 'patch-4' of https://github.com/kejadlen/docs into kejadlen-patch-4

Author: tjgrathwell

sites/ruby/loops.step

@@ -1,67 +1,67 @@
-goals do
-  goal "Use loops to do operations for every element in an array."
-  goal do 
-    rawtext(md2html("Use `puts` to print strings to the screen."))
-  end
-  goal 'Learn the two different syntaxes for creating blocks in Ruby.'
-end
-
-step do
-  irb <<-IRB
-puts 'Hello World'
-  IRB
-  message '`puts` (**put** **s**tring) is a way of printing information to the user of your program.'
-  message 'Take some time to contemplate the output of `puts` in irb:'
-  result <<-RESULT
-1.9.3p125 :006 > puts 'Hello World'
-Hello World
- => nil 
-1.9.3p125 :007 >
-  RESULT
-  message 'The method `puts` always has the **return value** of `nil`, which is what we see after the `=>` in the output. Printing \'Hello World\' to the screen is just a side-effect.'
-end
-  
-step do
-  irb <<-IRB
-fruits = ['peach', 'plum', 'pear']
-fruits.each { |fruit| puts fruit }
-  IRB
-  message 'The straight up-and-down `|` is called the \'pipe character\', and is typically the shifted version of the `\` (backslash) on your keyboard.'
-  message 'Loops are a way of doing something here multiple times. In this loop, we printed each fruit to the screen in order.'
-end
-
-step do
-  irb <<-IRB
-numbers = [109, 10, 1001]
-numbers.each { |n| puts n * 2 }
-  IRB
-  message 'The curly braces here define a **block**, and whatever\'s in the pipes is a **block variable**.'
-  message '`each` takes the first element in the array and sends it to the block, which temporarily stores it in the **block variable** and then runs the code after the pipes. It then goes back and does this again for each of the remaining items in the array.'  
-  irb <<-'IRB'
-ducks = ['huey', 'dewey', 'louie']
-ducks.each { |duck| puts "#{duck} quacks!" }
-ducks.each { |zombie| puts "#{zombie} quacks!" }
-  IRB
-  message 'It doesn\'t matter what you call your block variable: the previous two statements are exactly equivalent to Ruby. But you should try to name your variables something useful so the code makes sense to you later!'
-end
-
-step do
-    irb <<-'IRB'
-total = 256 ** 3
-colors = ['red', 'blue', 'green']
-colors.each do |color|
-  puts "#{total} colors of paint on the wall..."
-  puts "Take #{color} down, pass it around..."
-  total = total - 1
-  puts "#{total} colors of paint on the wall!"
-end
-    IRB
-    message "*The ** operator means 'to the power of', as in '256 to the third power'*"
-    message "There's more than one way to make a block in ruby. The `do ... end` syntax is typically used when a block needs to span multiple lines, while the `{ ... }` syntax is for a single line block."
-end
-
-explanation do
-  message "As you build complex programs, you'll want to do something to many pieces of data without typing it all out. Loops help solve this problem."
-end
-
-next_step 'running_programs_from_a_file'
+goals do
+  goal "Use loops to do operations for every element in an array."
+  goal do 
+    rawtext(md2html("Use `puts` to print strings to the screen."))
+  end
+  goal 'Learn the two different syntaxes for creating blocks in Ruby.'
+end
+
+step do
+  irb <<-IRB
+puts 'Hello World'
+  IRB
+  message '`puts` (**put** **s**tring) is a way of printing information to the user of your program.'
+  message 'Take some time to contemplate the output of `puts` in irb:'
+  result <<-RESULT
+1.9.3p125 :006 > puts 'Hello World'
+Hello World
+ => nil 
+1.9.3p125 :007 >
+  RESULT
+  message 'The method `puts` always has the **return value** of `nil`, which is what we see after the `=>` in the output. Printing \'Hello World\' to the screen is just a side-effect.'
+end
+  
+step do
+  irb <<-IRB
+fruits = ['peach', 'plum', 'pear']
+fruits.each { |fruit| puts fruit }
+  IRB
+  message 'The straight up-and-down `|` is called the \'pipe character\', and is typically the shifted version of the `\` (backslash) on your keyboard.'
+  message 'Loops are a way of doing something here multiple times. In this loop, we printed each fruit to the screen in order.'
+end
+
+step do
+  irb <<-IRB
+numbers = [109, 10, 1001]
+numbers.each { |n| puts n * 2 }
+  IRB
+  message 'The curly braces here define a **block**, and whatever\'s in the pipes is a **block variable**.'
+  message '`each` takes the first element in the array and sends it to the block, which temporarily stores it in the **block variable** and then runs the code after the pipes. It then goes back and does this again for each of the remaining items in the array.'  
+  irb <<-'IRB'
+ducks = ['huey', 'dewey', 'louie']
+ducks.each { |duck| puts "#{duck} quacks!" }
+ducks.each { |zombie| puts "#{zombie} quacks!" }
+  IRB
+  message 'It doesn\'t matter what you call your block variable: the previous two statements are exactly equivalent to Ruby. But you should try to name your variables something useful so the code makes sense to you later!'
+end
+
+step do
+    irb <<-'IRB'
+total = 256 ** 3
+colors = ['red', 'blue', 'green']
+colors.each do |color|
+  puts "#{total} colors of paint on the wall..."
+  puts "Take #{color} down, pass it around..."
+  total = total - 1
+  puts "#{total} colors of paint on the wall!"
+end
+    IRB
+    message "The ** operator means 'to the power of', as in '256 to the third power'"
+    message "There's more than one way to make a block in ruby. The `do ... end` syntax is typically used when a block needs to span multiple lines, while the `{ ... }` syntax is for a single line block."
+end
+
+explanation do
+  message "As you build complex programs, you'll want to do something to many pieces of data without typing it all out. Loops help solve this problem."
+end
+
+next_step 'running_programs_from_a_file'