Ruby/Array/first

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Текущая версия на 18:01, 13 сентября 2010

Access the First and Last Elements of the Array

# Accessing the first and last elements of an array is easy with the first and last methods
x = [1, 2, 3]
puts x.first
puts x.last

If you pass a numeric parameter to first or last, you"ll get that number of items from the start or the end of the array

x = [1, 2, 3]
puts x.first(2).join("-")