diff options
Diffstat (limited to 'ruby.html.markdown')
| -rw-r--r-- | ruby.html.markdown | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/ruby.html.markdown b/ruby.html.markdown index 1883d1ad..792c9c95 100644 --- a/ruby.html.markdown +++ b/ruby.html.markdown @@ -11,6 +11,7 @@ contributors: - ["Ariel Krakowski", "http://www.learneroo.com"] - ["Dzianis Dashkevich", "https://github.com/dskecse"] - ["Levi Bostian", "https://github.com/levibostian"] + - ["Rahil Momin", "https://github.com/iamrahil"] --- @@ -169,6 +170,9 @@ array[1..3] #=> [2, 3, 4] # Add to an array like this array << 6 #=> [1, 2, 3, 4, 5, 6] +# Check if an item exists in an array +array.include?(1) #=> true + # Hashes are Ruby's primary dictionary with keys/value pairs. # Hashes are denoted with curly braces: hash = { 'color' => 'green', 'number' => 5 } @@ -188,6 +192,10 @@ new_hash = { defcon: 3, action: true } new_hash.keys #=> [:defcon, :action] +# Check existence of keys and values in hash +new_hash.has_key?(:defcon) #=> true +new_hash.has_value?(3) #=> true + # Tip: Both Arrays and Hashes are Enumerable # They share a lot of useful methods such as each, map, count, and more |