style(go-pkg): rename pkg

slicepkg/float32.go

@@ -0,0 +1,183 @@
+package slicepkg
+
+import (
+	"fmt"
+
+	"github.com/pyihe/go-pkg/sortpkg"
+)
+
+type float32Slice []float32
+
+func newFloat32Slice(c int) *float32Slice {
+	s := make(float32Slice, 0, c)
+	return &s
+}
+
+func (f *float32Slice) String() string {
+	if f == nil {
+		return ""
+	}
+	return fmt.Sprintf("len:[%d] cap:[%d] value:%v", len(*f), cap(*f), *f)
+}
+
+func (f *float32Slice) Len() int {
+	if f == nil {
+		return 0
+	}
+	return len(*f)
+}
+
+func (f *float32Slice) Cap() int {
+	if f == nil {
+		return 0
+	}
+	return cap(*f)
+}
+
+func (f *float32Slice) Sort() {
+	if f == nil {
+		return
+	}
+	sortpkg.SortFloat32s(*f)
+}
+
+func (f *float32Slice) PushBack(x interface{}) (bool, int) {
+	if f == nil {
+		return false, 0
+	}
+	ok, v := convertToFloat32(x)
+	if !ok {
+		return false, 0
+	}
+	n := len(*f)
+	c := cap(*f)
+	if n+1 > c {
+		ns := make(float32Slice, n, c*2)
+		copy(ns, *f)
+		*f = ns
+	}
+	*f = (*f)[0 : n+1]
+	(*f)[n] = v
+	return true, n + 1
+}
+
+func (f *float32Slice) PushFront(x interface{}) (bool, int) {
+	if f == nil {
+		return false, 0
+	}
+	ok, v := convertToFloat32(x)
+	if !ok {
+		return false, 0
+	}
+	n := len(*f)
+	c := cap(*f)
+	if n+1 > c {
+		ns := make(float32Slice, n, c*2)
+		copy(ns, *f)
+		*f = ns
+	}
+	*f = (*f)[0 : n+1]
+	copy((*f)[1:n+1], (*f)[0:n])
+	(*f)[0] = v
+	return true, n + 1
+}
+
+func (f *float32Slice) PopBack() (bool, interface{}) {
+	if f == nil {
+		return false, nil
+	}
+	n := len(*f)
+	c := cap(*f)
+	if n == 0 {
+		return false, nil
+	}
+	if n < (c/2) && c > 25 {
+		ns := make(float32Slice, n, c/2)
+		copy(ns, *f)
+		*f = ns
+	}
+	x := (*f)[n-1]
+	*f = (*f)[0 : n-1]
+	return true, x
+}
+
+func (f *float32Slice) PopFront() (bool, interface{}) {
+	if f == nil {
+		return false, nil
+	}
+	n := len(*f)
+	c := cap(*f)
+	if n == 0 {
+		return false, nil
+	}
+	if n < (c/2) && c > 25 {
+		ns := make(float32Slice, n, c/2)
+		copy(ns, *f)
+		*f = ns
+	}
+	x := (*f)[0]
+	*f = (*f)[1:n]
+	return true, x
+}
+
+func (f *float32Slice) Index(x interface{}) (index int) {
+	index = -1
+	if f == nil {
+		return
+	}
+	ok, v := convertToFloat32(x)
+	if !ok {
+		return
+	}
+
+	for i := range *f {
+		if (*f)[i] == v {
+			index = i
+			break
+		}
+	}
+	return
+}
+
+func (f *float32Slice) IndexValue(index int) interface{} {
+	if f == nil {
+		return nil
+	}
+	n := len(*f)
+	if index < 0 || index >= n {
+		return nil
+	}
+	return (*f)[index]
+}
+
+func (f *float32Slice) Range(fn func(index int, ele interface{}) bool) {
+	if f == nil {
+		return
+	}
+	for i, x := range *f {
+		if fn(i, x) {
+			break
+		}
+	}
+}
+
+func (f *float32Slice) Delete(x interface{}) (ok bool) {
+	if f == nil {
+		return
+	}
+	if len(*f) == 0 {
+		return
+	}
+	ok, v := convertToFloat32(x)
+	if !ok {
+		return false
+	}
+	for i, e := range *f {
+		if e == v {
+			*f = append((*f)[:i], (*f)[i+1:]...)
+			ok = true
+			break
+		}
+	}
+	return
+}