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Go by Example: Values

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(この記事は Go by Example: Values を翻訳したものです。)

Goにはstring, integer, float, booleanなどのさまざまな方があるが、ここでは例を少し紹介する。

package main

import "fmt"

func main() {
    // Stringsは+で足すことができる。
    fmt.Println("go" + "lang")

    // intgers と float
    fmt.Println("1+1 =", 1+1)
    fmt.Println("7.0/3.0 =", 7.0/3.0)

    // Booleansとあなたがいつも使っているようなオペレータ
    fmt.Println(true && false)
    fmt.Println(true || false)
    fmt.Println(!true)
}


$ go run values.go
golang
1+1 = 2
7.0/3.0 = 2.3333333333333335
false
true
false



int - float

package main

import "fmt"

func main() {
    // int / int
    fmt.Println("1/3 =", 1/3)
    // int / float
    fmt.Println("1/3.0 =", 1/3.0)
}
$ go run int-float.go
1/3 = 0
1/3.0 = 0.3333333333333333

pythonの2系と同じ結果
int / intはfloatにならない。

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