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trim removes the specified set of characters from the start and end of the given
Every occurrence of a character in the second argument is removed from the start and end of the string specified in the first argument.
> trim("?!hello?!", "!?") "hello" > trim("foobar", "far") "oob" > trim(" hello! world.! ", "! ") "hello! world."
trimprefixremoves a word from the start of a string.
trimsuffixremoves a word from the end of a string.
trimspaceremoves all types of whitespace from both the start and the end of a string.