arrays - .sort not working in Swift 2.0 -

i'm trying sort arrays of combinations have. multidimensional array, need sort out array that's inside now.

for combination in mycombinations {         combination.sort({$0 < $1})         print("\(combination)")     } 

here's code sort out array , here's result.

["lys", "dyt", "lrt"] ["lys", "dyt", "gbc"] ["lys", "dyt", "lbc"] 

i got warning says "result of call 'sort' unused" me out this?

thanks.

in swift 2, sort sortinplace (and sorted sort), , both methods called on array (they global functions).

when call combination.sort({$0 < $1}) return sorted array, you're not sorting source array in place.

and in example result of combination.sort({$0 < $1}) not assigned variable, that's compiler telling error message.

assign result of sort:

let sortedarray = combination.sort({$0 < $1}) print(sortedarray) 

---

if want array of sorted arrays, can use map instead of loop:

let mycombinations = [["lys", "dyt", "lrt"], ["lys", "dyt", "gbc"], ["lys", "dyt", "lbc"]]  let sortedcombinations = mycombinations.map { $0.sort(<) }  print(sortedcombinations)  // [["dyt", "lrt", "lys"], ["dyt", "gbc", "lys"], ["dyt", "lbc", "lys"]]