If I understand you correctly, you'd like to assign some value to a variable as part of the pattern. There is no direct support for this in F#, but you can define a parameterized active pattern that does that:
let (|Let|) v e = (v, e)
match stt with
| Let "Summ" (st, 1)
| Let "AVG" (st, 2) -> srintf "%s ..." st
The string after Let is a parameter of the pattern (and is passed in as value of v). The pattern then returns a tuple containing the bound value and the original value (so you can match the original value in the second parameter of the tuple.
5
J D
On
There is no direct support for that but you can mimic the effect like this as well:
let 1, st, _ | 2, _, st = stt, "Summ", "AVG"
sprintf "%s %a" st summbycol (counter, stt)
If I understand you correctly, you'd like to assign some value to a variable as part of the pattern. There is no direct support for this in F#, but you can define a parameterized active pattern that does that:
The string after
Let
is a parameter of the pattern (and is passed in as value ofv
). The pattern then returns a tuple containing the bound value and the original value (so you can match the original value in the second parameter of the tuple.