Why do I get an error when I try to strip a string in Julia?
strip("Clean Monkeys", "s")
# expected
> "Clean Monkey"
# but got
> MethodError: objects of type String are not callable
How to strip a string in julia
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2 Answers
In Julia there is a difference between single and double apostrophes around characters (unlike languages like Python and R). So "s" is seen as string and 's' as a character.
Strip only removes char(s) not string(s). From the docs:
strip(str::AbstractString, chars) -> SubString
# This works
strip("Clean Monkeys", 's')
> "Clean Monkey"
# you can also provide lists of characters
strip("Clean Monkeys", ['e', 'y', 's'])
> "Clean Monk"
Like it was said by @Jonas strip takes a Char as the second argument. If you want to actually remove a SubString at the back you can always use a regular expression such as:
julia> replace("Hello worldHello", r"Hello$"=>"")
"Hello world"
Note that $ is an end-of-string anchor and hence only the ending Hello was removed.
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