10 examples of 'golang check if key in map' in Go

104
func keyInMap(k string, m map[string]interface{}) bool {
105
	if _, ok := m[k]; ok {
106
		return true
107
	}
108
	return false
109
}

652
func mapContainsKeyPartial(theMap map[string]interface{}, key string) (bool, interface{}) {
653
	for k, v := range theMap {
654
		if strings.Contains(k, key) {
655
			return true, v
656
		}
657
	}
658
	return false, nil
659
}

129
func hasKey(dict map[string]string, key string) bool {
130
	if value, found := dict[key]; found {
131
		return value != ""
132
	}
133
	return false
134
}

465
func keyExists(key string, haystack map[string]string) bool {
466
	_, exists := haystack[key]
467
	return exists
468
}

47
func MapHasKey(m *map[string]string, label string) bool {
48
	ans := false
49
	if m != nil {
50
		for k, _ := range *m {
51
			if k == label {
52
				ans = true
53
				break
54
			}
55
		}
56
	}
57
	return ans
58
}

244
func findMapInSliceBasedOnKeyValue(m []interface{}, key string, value interface{}) (map[string]interface{}, int, bool) {
245
	for k, v := range m {
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		typedV := v.(map[string]interface{})
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		valueToMatch, ok := typedV[key]
248
		if ok && valueToMatch == value {
249
			return typedV, k, true
250
		}
251
	}
252
	return nil, 0, false
253
}

256
func (d *V8value) HasValueBykey(key string) int32 {
257
	key_ := C.cef_string_userfree_alloc()
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	setCEFStr(key, key_)
259
	defer func() {
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		C.cef_string_userfree_free(key_)
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	}()
262
	return int32(C.gocef_v8value_has_value_bykey(d.toNative(), (*C.cef_string_t)(key_), d.has_value_bykey))
263
}

774
func Ismap(data interface{}, templs ...string) Attribute {
775
    attr := Attribute{ Data: data, Name: "Ismap" }
776
    if len(templs) == 0 {
777
        attr.Templ = `{{define "Ismap"}}ismap="{{.}}"{{end}}`
778
    } else {
779
        attr.Templ = `{{define "Ismap"}}ismap="` + strings.Join(templs, " ") + `"{{end}}`
780
    }
781
    return attr
782
}

508
func IsMapWithStringAsKey(i interface{}) (map[string]interface{}, bool) {
509
	temp := make(map[string]interface{}, 0)
510
511
	if i == nil {
512
		return temp, false
513
514
	} else if si, ok := i.(map[string]interface{}); ok {
515
		if len(si) == 0 {
516
			return temp, false
517
		} else {
518
			return si, true
519
		}
520
521
	} else if ii, ok := i.(map[interface{}]interface{}); ok {
522
		if len(ii) == 0 {
523
			return temp, false
524
		}
525
526
		for k, v := range ii {
527
			if ks, ok := k.(string); ok {
528
				temp[strings.ToLower(ks)] = v
529
			} else {
530
				return temp, false
531
			}
532
		}
533
534
	} else {
535
		return temp, false
536
	}
537
538
	return temp, true
539
}

229
func IsMapLast(data interface{}, element interface{}) bool {
230
	switch reflect.TypeOf(data).Kind() {
231
	case reflect.Map:
232
		mapItem := reflect.ValueOf(data).MapKeys()
233
234
		var keys []string
235
		for _, k := range mapItem {
236
			keys = append(keys, k.String())
237
		}
238
		sort.Strings(keys)
239
		mapItemType := keys[len(keys)-1]
240
		return (mapItemType == element)
241
	}
242
	return false
243
}