go map1 源码
golang map1 代码
文件路径：/test/map1.go
// errorcheck
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Test map declarations of many types, including erroneous ones.
// Does not compile.
package main
type v bool
var (
// valid
_ map[int8]v
_ map[uint8]v
_ map[int16]v
_ map[uint16]v
_ map[int32]v
_ map[uint32]v
_ map[int64]v
_ map[uint64]v
_ map[int]v
_ map[uint]v
_ map[uintptr]v
_ map[float32]v
_ map[float64]v
_ map[complex64]v
_ map[complex128]v
_ map[bool]v
_ map[string]v
_ map[chan int]v
_ map[*int]v
_ map[struct{}]v
_ map[[10]int]v
// invalid
_ map[[]int]v // ERROR "invalid map key"
_ map[func()]v // ERROR "invalid map key"
_ map[map[int]int]v // ERROR "invalid map key"
_ map[T1]v // ERROR "invalid map key"
_ map[T2]v // ERROR "invalid map key"
_ map[T3]v // ERROR "invalid map key"
_ map[T4]v // ERROR "invalid map key"
_ map[T5]v
_ map[T6]v
_ map[T7]v
_ map[T8]v
)
type T1 []int
type T2 struct { F T1 }
type T3 []T4
type T4 struct { F T3 }
type T5 *int
type T6 struct { F T5 }
type T7 *T4
type T8 struct { F *T7 }
func main() {
m := make(map[int]int)
delete() // ERROR "missing arguments|not enough arguments"
delete(m) // ERROR "missing second \(key\) argument|not enough arguments"
delete(m, 2, 3) // ERROR "too many arguments"
delete(1, m) // ERROR "first argument to delete must be map|argument 1 must be a map|is not a map"
}
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