Hi Monks, I need some help writing a regular expression for the first time.
Im writing a program that evaluates simple maths equations, e.g. (a + 13) * (b - 10 ) / c
I want to be able to read an input like above and get the variables used. Obviously if a variable appears twice I only want it once. I thought something like match \w?+.
Thanks for your help!

In reply to regular expression math equations by Anonymous Monk

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