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Ruby | Enumerable take_while() function
  • Last Updated : 05 Dec, 2019

The take_while() of enumerable is an inbuilt method in Ruby returns all the elements till the first element which returns a false to the condition in the block. It returns an enumerator if the block is not passed.

Syntax: enu.take_while {|obj| block|}

Parameters: The function accepts a block.

Return Value: It returns elements till the first element which returns a false.

Example 1:






# Ruby program for take_while method in Enumerable
  
# Initialize 
enu = [10, 12, 11, 15]
  
# Prints 
enu.take_while {|obj| obj<=13}


Output:

[10, 12, 11]

Example 2:




# Ruby program for take_while method in Enumerable
  
# Initialize 
enu = (1..8)
  
# Prints 
enu.take_while {|obj| obj<=4}


Output:

[1, 2, 3, 4]
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