https://docs.ruby-lang.org/en/master/doc/syntax/literals_rdoc.html

"There is also a character literal notation to represent single character strings, which syntax is a question mark (?) followed by a single character or escape sequence that corresponds to a single codepoint in the script encoding:"

Apparently (I didn't know the syntax either) ? can be used to create literal strings of length one.

E.g.

irb(main):014:0> ?.
=> "."
irb(main):015:0> ?"
=> "\""
irb(main):016:0> ?-
=> "-"
irb(main):017:0> ?a
=> "a"

I guess this was just shorter than "." ^^

Dont thanks me. Thanks CW :D I learned it in here.

welcome to valhalla... ;)

Thanks haha!

you cannot... ;)