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92 lines
1.9 KiB
92 lines
1.9 KiB
// run
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// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import "fmt"
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func set(m map[interface{}]interface{}, key interface{}) (err error) {
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defer func() {
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if r := recover(); r != nil {
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err = fmt.Errorf("set failed: %v", r)
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}
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}()
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m[key] = nil
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return nil
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}
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func del(m map[interface{}]interface{}, key interface{}) (err error) {
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defer func() {
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if r := recover(); r != nil {
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err = fmt.Errorf("del failed: %v", r)
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}
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}()
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delete(m, key)
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return nil
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}
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func addInt(m map[interface{}]int, key interface{}) (err error) {
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defer func() {
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if r := recover(); r != nil {
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err = fmt.Errorf("addInt failed: %v", r)
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}
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}()
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m[key] += 2018
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return nil
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}
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func addStr(m map[interface{}]string, key interface{}) (err error) {
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defer func() {
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if r := recover(); r != nil {
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err = fmt.Errorf("addStr failed: %v", r)
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}
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}()
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m[key] += "hello, go"
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return nil
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}
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func appendInt(m map[interface{}][]int, key interface{}) (err error) {
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defer func() {
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if r := recover(); r != nil {
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err = fmt.Errorf("appendInt failed: %v", r)
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}
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}()
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m[key] = append(m[key], 2018)
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return nil
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}
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func appendStr(m map[interface{}][]string, key interface{}) (err error) {
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defer func() {
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if r := recover(); r != nil {
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err = fmt.Errorf("addStr failed: %v", r)
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}
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}()
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m[key] = append(m[key], "hello, go")
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return nil
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}
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func main() {
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m := make(map[interface{}]interface{})
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set(m, []int{1, 2, 3})
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set(m, "abc") // used to throw
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del(m, []int{1, 2, 3})
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del(m, "abc") // used to throw
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mi := make(map[interface{}]int)
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addInt(mi, []int{1, 2, 3})
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addInt(mi, "abc") // used to throw
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ms := make(map[interface{}]string)
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addStr(ms, []int{1, 2, 3})
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addStr(ms, "abc") // used to throw
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mia := make(map[interface{}][]int)
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appendInt(mia, []int{1, 2, 3})
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msa := make(map[interface{}][]string)
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appendStr(msa, "abc") // used to throw
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}
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