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strings.go
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strings.go
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package goptionals
// String returns a pointer to the string passed in.
func String(v string) *string {
return &v
}
// StringValue returns the value of the string pointer passed in or "" when the pointer is nil.
func StringValue(v *string) string {
if v != nil {
return *v
}
return ""
}
// StringSlice converts a slice of string values into a slice of string pointers
func StringSlice(src []string) []*string {
dst := make([]*string, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// StringValueSlice converts a slice of string pointers into a slice of string values
func StringValueSlice(src []*string) []string {
dst := make([]string, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// StringMap converts a string map of string values into a string map of string pointers
func StringMap(src map[string]string) map[string]*string {
dst := make(map[string]*string, len(src))
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// StringValueMap converts a string map of string pointers into a string map of string values
func StringValueMap(src map[string]*string) map[string]string {
dst := make(map[string]string, len(src))
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}