diff options
Diffstat (limited to 'ruby.html.markdown')
| -rw-r--r-- | ruby.html.markdown | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/ruby.html.markdown b/ruby.html.markdown index 2f4d0934..2595d1d5 100644 --- a/ruby.html.markdown +++ b/ruby.html.markdown @@ -17,6 +17,7 @@ contributors: - ["Jake Faris", "https://github.com/farisj"] - ["Corey Ward", "https://github.com/coreyward"] - ["Jannik Siebert", "https://github.com/janniks"] + - ["Keith Miyake", "https://github.com/kaymmm"] --- ```ruby @@ -83,9 +84,9 @@ false.class #=> FalseClass # Combined comparison operator (returns `1` when the first argument is greater, # `-1` when the second argument is greater, and `0` otherwise) -1 <=> 10 #=> -1 -10 <=> 1 #=> 1 -1 <=> 1 #=> 0 +1 <=> 10 #=> -1 (1 < 10) +10 <=> 1 #=> 1 (10 > 1) +1 <=> 1 #=> 0 (1 == 1) # Logical operators true && false #=> false @@ -188,8 +189,11 @@ array[2, 3] #=> [3, 4, 5] array[1..3] #=> [2, 3, 4] # You can reverse an Array. +# Return a new array with reversed values +[1,2,3].reverse #=> [3,2,1] +# Reverse an array in place to update variable with reversed values a = [1,2,3] -a.reverse! #=> [3,2,1] +a.reverse! #=> a==[3,2,1] because of the bang ('!') call to reverse # Like arithmetic, [var] access is just syntactic sugar # for calling a method '[]' on an object. @@ -373,7 +377,7 @@ sum sum(3, 4), 5 #=> 12 # yield # All methods have an implicit, optional block parameter. -# Tt can be called with the 'yield' keyword. +# It can be called with the 'yield' keyword. def surround puts '{' yield |