Dynamically set local variables in Ruby [duplicate]

Answer 1

since you don't want constants

args = {}
args[:a] = 1
args[:b] = 2

args.each_pair{|k,v|eval "@#{k}=#{v};"}

puts @b

2

you might find this approach interesting ( evaluate the variables in the right context)

fn="b*b"
vars=""
args.each_pair{|k,v|vars+="#{k}=#{v};"}
eval vars + fn

4