I'm trying to DRY up my code by using Procs. I have many lines that look like this (other lines may have fees, discounts, taxes, rather than revenue):
h.merge!({revenue: 500}){|key, old_val, new_val| old_val + new_val}
I tried to write a Proc that looks like this:
hproc = Proc.new {|key, old_val, new_val| old_val + new_val}
And simplify the first line by doing this:
h.merge!({revenue: 500})(&hproc)
However, I get the error:
syntax error, unexpected '(', expecting end-of-input
h.merge!({revenue:600})(&hproc)
^
h.merge!({revenue: 500}, &hproc)
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