[Python-ideas] New explicit methods to trim strings

[Terry Reedy]

On 3/25/2019 6:22 AM, Jonathan Fine wrote:
> Instead of naming these operations, we could use '+' and '-', with 
> semantics:
> 
>      # Set the values of the variables.
>      >>> a = 'hello '
>      >>> b = 'world'
>      >>> c = 'hello world'
> 
>      # Some values between the variables.
>      >>> a + b == c
>      True
>      >>> a == c - b
>      True
>      >>> b = -a + c
>      True

Summary: using '-' for trimming works well for postfixes, badly for 
prefixes, and not at all for infixes.  Clever but not too practical 
since trimming prefixes seems to be more common than trimming postfixes.

-- 
Terry Jan Reedy