Ruby | Struct filter() function

The filter() is an inbuilt method in Ruby that returns an array which contains the member value from struct which returns a true value for the given block.

Syntax: filter {|obj| block }

Parameters: The function accepts a single parameter block which specifies the condition.

Return Value: It returns member value from struct to block and an array is returned.

Example 1:

# Ruby program for filter method in struct

# Initialize struct
Num = Struct.new(:a, :b, :c, :d)

# Initialize numbers
l = Num.new(12, 22, 13, 44)

# Filter used
l.select {|v| v.even? }

Output:

[12, 22, 44]

Example 2:

# Ruby program for filter method in struct

# Initialize struct
Num = Struct.new(:a, :b, :c, :d)

# Initialize numbers
l = Num.new(12, 22, 13, 44)

# Filter used
l.select {|v| v.odd? }

Output:

[13]