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array first and last methods

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Gabriel Halley
2015-10-07 15:26:10 -04:00
parent e3c528bb81
commit f4c13bc696
1 changed files with 2 additions and 0 deletions
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ruby.html.markdown
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@@ -155,6 +155,7 @@ array = [1, 2, 3, 4, 5] #=> [1, 2, 3, 4, 5]
# Arrays can be indexed # Arrays can be indexed
# From the front # From the front
array[0] #=> 1 array[0] #=> 1
array.first #=> 1
array[12] #=> nil array[12] #=> nil
# Like arithmetic, [var] access # Like arithmetic, [var] access
@@ -165,6 +166,7 @@ array.[] 12 #=> nil
# From the end # From the end
array[-1] #=> 5 array[-1] #=> 5
array.last #=> 5
# With a start index and length # With a start index and length
array[2, 3] #=> [3, 4, 5] array[2, 3] #=> [3, 4, 5]