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doc: add example and update doc for formatter package
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@@ -1,47 +0,0 @@
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package formatter
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import (
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"fmt"
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"reflect"
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"strconv"
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"strings"
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)
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func commaString(s string) string {
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if len(s) <= 3 {
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return s
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}
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return commaString(s[:len(s)-3]) + "," + commaString(s[len(s)-3:])
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}
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func numberToString(value any) (string, error) {
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switch reflect.TypeOf(value).Kind() {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
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reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
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return fmt.Sprintf("%v", value), nil
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// todo: need to handle 12345678.9 => 1.23456789e+07
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case reflect.Float32, reflect.Float64:
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return fmt.Sprintf("%v", value), nil
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case reflect.String:
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{
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sv := fmt.Sprintf("%v", value)
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if strings.Contains(sv, ".") {
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_, err := strconv.ParseFloat(sv, 64)
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if err != nil {
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return "", err
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}
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return sv, nil
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} else {
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_, err := strconv.ParseInt(sv, 10, 64)
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if err != nil {
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return "", nil
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}
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return sv, nil
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}
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}
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default:
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return "", nil
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}
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}
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