[go-nuts] Recursive Closure Variable?

[m***@gmail.com]

I have a variable that I am assigning to a function. I would like to call
it recursively. Can I? Or do I have to move fold(int, int, int) out of
fold(string)?

func fold(chain string) (*Protein, error) {
cur, err := NewProtein(chain)
if err != nil {
return nil, err
}

best := cur.Copy()
bestScore := -20

fold := func(index, row, col int) {
cur.SetLocation(index, row, col)
if index >= cur.Len() - 1 {
score := cur.GetScore()
if score > bestScore {
bestScore = score
best = cur.Copy()
}
} else {
fold(index + 1, row + 1, col)
fold(index + 1, row, col + 1)
fold(index + 1, row - 1, col)
fold(index + 1, row, col - 1)
}
}

fold(0, cur.Len() - 1, cur.Len() - 1)
return best, nil
}

Thanks!

[Fredrik Ehnbom]

The variable needs to be declared before you can reference it, i.e:

var fold func(index, row, col int)
fold = func(index, row, col int) {...}

Post by m***@gmail.com
I have a variable that I am assigning to a function. I would like to call
it recursively. Can I? Or do I have to move fold(int, int, int) out of
fold(string)?
func fold(chain string) (*Protein, error) {
cur, err := NewProtein(chain)
if err != nil {
return nil, err
}
best := cur.Copy()
bestScore := -20
fold := func(index, row, col int) {
cur.SetLocation(index, row, col)
if index >= cur.Len() - 1 {
score := cur.GetScore()
if score > bestScore {
bestScore = score
best = cur.Copy()
}
} else {
fold(index + 1, row + 1, col)
fold(index + 1, row, col + 1)
fold(index + 1, row - 1, col)
fold(index + 1, row, col - 1)
}
}
fold(0, cur.Len() - 1, cur.Len() - 1)
return best, nil
}
Thanks!

[m***@gmail.com]

Thank you very much! :)