CODEWITHSUNDEEP
scalafor-loop
user4063815
user4063815

Reputation:

For loop continue

Consider the following loop that represents a "neighborhood"

for(x <- -1 to 1; y <- -1 to 1)
{
   // If we are in the current field, just get the one above
   if((x == 0) && (y == 0)) y = 1 // Problem: Reassignment to val
}

as you can see, I'd get a reassignment to val compilation error. In Java I would do "continue" to skip that.

What would be an elegant solution to this?

Upvotes: 2

Views: 1128

Answers (1)

Sean
Sean

Reputation: 29772

Use a guard:

for (x <- -1 to 1; y <- -1 to 1; if !(x == 0 && y == 0)) {
    ...
}

Alternately:

for (x <- -1 to 1; y <- -1 to 1 by (if (x == 0) 2 else 1)) {
    ...
}

I think the first one is more readable, though.

Upvotes: 5

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