Ruby | Regexp =~() function

Ruby | Regexp casefold?() function

Last Updated : 17 Dec, 2019

Regexp#casefold?() : casefold?() is a Regexp class method which returns the value of the case-insensitive flag of regular expressions.

Syntax: Regexp.casefold?() Parameter: Regexp values Return: value of the case-insensitive flag of regular expressions

Example #1 :

Ruby

# Ruby code for Regexp.casefold?() method

# declaring Regexp value
reg_a = /a/

# declaring Regexp value
reg_b = /geeks/i

# declaring Regexp value
reg_c = /a/


#  casefold? method
puts "Regexp casefold? form : #{reg_a.casefold?}\n\n"

puts "Regexp casefold? form : #{reg_b.casefold?}\n\n"

puts "Regexp casefold? form : #{reg_c.casefold?}\n\n"

Output :

Regexp casefold? form : false

Regexp casefold? form : true

Regexp casefold? form : false

Example #2 :

Ruby

# Ruby code for Regexp.casefold?() method

# declaring Regexp value
reg_a = /geeks/

# declaring Regexp value
reg_b = /problem/

# declaring Regexp value
reg_c = /code/i


#  casefold? method
puts "Regexp casefold? form : #{reg_a.casefold?}\n\n"

puts "Regexp casefold? form : #{reg_b.casefold?}\n\n"

puts "Regexp casefold? form : #{reg_c.casefold?}\n\n"

Output :

Regexp casefold? form : false

Regexp casefold? form : false

Regexp casefold? form : true

Ruby | Regexp =~() function

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