Dataset length fix

- it kept shrinking

Author: neurlang

trainer/evaluatefunc.go

@@ -68,12 +68,13 @@ func NewEvaluateFunc(net feedforward.FeedforwardNetwork, length int, significanc
 var ha EvaluateFuncHasher = h
 var success int
 if length != 0 {
+var l = length
 if (succ != nil && (*succ < 99 && *succ > 0)) || (succ == nil) {
-length = sampleSize(length, significance)
+l = sampleSize(length, significance)
 }
-hsh := parallel.NewUint16Hasher(length)
+hsh := parallel.NewUint16Hasher(l)
 ha = hsh
-success = testFunc(length, hsh)
+success = testFunc(l, hsh)
 } else {
 success = testFunc(0, h)
 }