The grep_v() of enumerable is an inbuilt method in Ruby returns an array of elements which contain every (element != pattern). If the optional block is not given, then it returns an array which does not contain the elements in that pattern.
Syntax: enu.grep_v(pattern) { |obj| block }
Parameters: The function takes a pattern and an optional block.
Return Value: It returns either an array of boolean values or an array containing the elements that are not contained in the pattern.
Example #1:
# Ruby program for grep_v method in Enumerable # Initialize enu = (1..10)
# Prints enu.grep_v (3..5)
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Output:
[1, 2, 6, 7, 8, 9, 10]
Example #2:
# Ruby program for grep_v method in Enumerable # Initialize enu = (1..10)
# Prints enu.grep_v (3..5) { |obj| obj + 10 }
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Output:
[11, 12, 16, 17, 18, 19, 20]