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How to get the last element of an array in Ruby?
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Use -1 index (negative indices count backward from the end of the array):
a[-1] # => 5
b[-1] # => 6
or Array#last method:
a.last # => 5
b.last # => 6
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namedtuple and default values for optional keyword arguments
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21 Answers
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Big-O for Eight Year Olds? [duplicate]
...und what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to perform won't grow because there are more items. And an O(n) operation would mean that you would perform a set of operations on each elem...
Convert dmesg timestamp to custom date format
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182
Understanding dmesg timestamp is pretty simple: it is time in seconds since the kernel started...
How to remove item from array by value? [duplicate]
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Hibernate, @SequenceGenerator and allocationSize
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edited May 23 '17 at 12:10
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answered Oct 5 '12 at 13:35
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How to get Enum Value from index in Java?
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answered Jul 14 '11 at 11:53
Harry JoyHarry Joy
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How to merge 2 JSON objects from 2 files using jq?
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Since 1.4 this is now possible with the * operator. When given two objects, it will merge them...