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Perform an action multiple times based on a boolean condition, checked before the first action (WHILE .. DO)
Starting with a variable x=1, Print the sequence 
fantom
erlang
erlang
Submit a new solution for fantom or erlang
There are 17 other solutions in additional languages (clojure, cpp, csharp, fsharp ...)
"1,2,4,8,16,32,64,128," by doubling x and checking that x is less than 150.
x := 1
while (x < 150) {
Env.cur.out.print("$x,")
x *= 2
}
echo
while (x < 150) {
Env.cur.out.print("$x,")
x *= 2
}
echo
X = 1, print_while_X_less_150(X).
Pred = fun (X) -> X < 150 end,
Action = fun (X) -> io:format("~B,", [X]), X * 2 end,
X = 1,
while_do(Pred, Action, X).
Action = fun (X) -> io:format("~B,", [X]), X * 2 end,
X = 1,
while_do(Pred, Action, X).
Submit a new solution for fantom or erlang
There are 17 other solutions in additional languages (clojure, cpp, csharp, fsharp ...)
