Hi all,
Is there a way to create a "dictionary" in R, such that it has <key,value>
pairs?
Something to the effect of:
x=dictionary(c("Hi","Why","water") , c(1,5,4))
x["Why"]=5
In truth I'm looking two categorial variables function.
So that if x=dictionary(c("a","b"),c(5,2))
x val 1 a 5 2 b 2
I want to compute x1^2+x2 on all combinations of x keys
x1 x2 val1 val2 x1^2+x2
1 a a 5 5 30
2 b a 2 5 9
3 a b 5 2 27
4 b b 2 2 6
And then I want to be able to retrieve the result using x1 and x2.
Something to the effect of:
get_result["b","a"] = 9
what is the best, efficient way to do this?
Thanks,
Eran
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