Open In App

Ruby | Enumerable all? function

Improve
Improve
Like Article
Like
Save
Share
Report

The all?() of enumerable is an inbuilt method in Ruby returns a boolean value true if all the objects in the enumerable satisfies the given condition, else it returns false. If a pattern is given, it compares with the pattern, and returns true if all of them are equal to the given pattern, else it returns false.

Syntax enu.all? { |obj| block } or enu.all?(pattern)

Parameters: The function takes two types of parameters, one is the object and the block, while the other is the pattern. In case nothing is passed, it assumes to be default object and block which returns true if none of the objects are false or nil.

Return Value: It returns a boolean value.

Example #1::




# Ruby program for all? method in Enumerable
    
# Initialize an enumerable
enu1 = [10, 19, 18]   
    
# checks if all numbers are greater 
# than 4 or not 
res1 = enu1.all? { |num| num>4
  
# prints the result 
puts res1 
  
  
# ch__LINE__ecks if all numbers are greater 
# than 4 or not 
res2 = enu1.all? { |num| num>=15
  
# prints the result 
puts res2 


Output:

true
false

Example 2:




# Ruby program for all? method in Enumerable
    
# Initialize an enumerable
enu1 = [10, 19, 20]   
    
# Checks
res1 = enu1.all?(Numeric)
  
# prints the result 
puts res1 
  
# Initialize
enu2 = [nil, nil]
  
# Checks 
res2 = enu2.all? 
# prints the result 
puts res2 


Output:

true
false


Last Updated : 05 Dec, 2019
Like Article
Save Article
Previous
Next
Share your thoughts in the comments
Similar Reads