Ruby 2.7 has added new methods
Symbol#start_with? and Symbol#end_with?
These methods behave similar to the methods with same name in String class.
Symbol#start_with?
The Symbol#start_with? returns true
if the symbol starts with provided prefixes.
The provided prefixes can be a string, regex or multiple strings.
In case of multiple strings it returns true
if any of string is prefix of symbol.
:saeloun.start_with?("sae")
=> true
:saeloun.start_with?("new")
=> false
:saeloun.start_with?("sae", "new")
=> true
:saeloun.start_with?("means", "new")
=> false
:saeloun.start_with?(/SA/i)
=> true
:saeloun.start_with?(/s./)
=> true
:saeloun.start_with?(/ne*/)
=> false
Symbol#end_with?
Similarly Symbol#end_with? returns true
if the symbol ends with provided suffixes.
Again the provided suffix arguments
can be a string, multiple strings.
:saeloun.end_with?("oun")
=> true
:saeloun.end_with?("new")
=> false
:saeloun.end_with?("oun", "new")
=> true
:saeloun.end_with?("means", "new")
=> false
:saeloun.end_with?(/.n/)
=> TypeError (no implicit conversion of Regexp into String)
A key thing to note here is,
as we can see the start_with? method accepts regex as arguments,
while the end_with? method doesn’t accept regex arguments.
