Ruby | Enumerable each_with_index() function
Last Updated :
05 Dec, 2019
The each_with_index() of enumerable is an inbuilt method in Ruby hashes the items in the enumerable according to the given block. In case no block is given, then an enumerator is returned.
Syntax: enu.each_with_index { |obj| block }
Parameters: The function takes the block which is used to initialise the index to the individual objects.
Return Value: It returns the enumerator, if no block is given, else it hashes the items.
Example 1:
hashing = Hash . new
enu = [ 7 , 9 , 10 ]
enu.each_with_index { |item, index|
hashing[item] = index
}
puts hashing
|
Output:
{7=>0, 9=>1, 10=>2}
Example 2:
hashing = Hash . new
enu = [ 7 , 9 , 10 ]
enu.each_with_index
|
Output:
Enumerator: [7, 9, 10]:each_with_index
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