Darts.go:75 cap func should be replaced by len func

[CrisisTM]

if you wanna build a DA Trie with thousands of nodes, there may cause errors.

[awsong]

Could you elaborate or give some test case?
I intended to get the capacity of the slice, thus using cap func. Can't simply replace it with len func.

[wxf4150]

go-darts/darts.go

Lines 74 to 84 in 1b63d94

	func (d *dartsBuild) resize(newSize int) {
	if newSize > cap(d.darts.Base) {
	d.darts.Base = append(d.darts.Base, make([]int, (newSize-len(d.darts.Base)))...)
	d.darts.Check = append(d.darts.Check, make([]int, (newSize-len(d.darts.Check)))...)
	d.used = append(d.used, make([]bool, (newSize-len(d.used)))...)
	} else {
	d.darts.Base = d.darts.Base[:newSize]
	d.darts.Check = d.darts.Check[:newSize]
	d.used = d.used[:newSize]
	}
	}

"if newSize > cap(d.darts.Base) " 应该换成 if newSize > len(d.darts.Base) 。不改 TestExactMatchSearch测试都通不过。