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math/big: add examples for Rat and Int's SetString and Scan methods
R=golang-dev, bradfitz, rsc, r, gri, r CC=golang-dev https://golang.org/cl/5543047
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// Copyright 2012 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. | ||
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package big_test | ||
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import ( | ||
"fmt" | ||
"log" | ||
"math/big" | ||
) | ||
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// 3.142 | ||
func ExampleRat_SetString() { | ||
r := new(big.Rat) | ||
r.SetString("355/113") | ||
fmt.Println(r.FloatString(3)) | ||
} | ||
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// 420 | ||
func ExampleInt_SetString() { | ||
i := new(big.Int) | ||
i.SetString("644", 8) // octal | ||
fmt.Println(i) | ||
} | ||
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// 3/2 | ||
func ExampleRat_Scan() { | ||
// The Scan function is rarely used directly; | ||
// the fmt package recognizes it as an implementation of fmt.Scanner. | ||
r := new(big.Rat) | ||
_, err := fmt.Sscan("1.5000", r) | ||
if err != nil { | ||
log.Println("error scanning value:", err) | ||
} else { | ||
fmt.Println(r) | ||
} | ||
} | ||
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// 18446744073709551617 | ||
func ExampleInt_Scan() { | ||
// The Scan function is rarely used directly; | ||
// the fmt package recognizes it as an implementation of fmt.Scanner. | ||
i := new(big.Int) | ||
_, err := fmt.Sscan("18446744073709551617", i) | ||
if err != nil { | ||
log.Println("error scanning value:", err) | ||
} else { | ||
fmt.Println(i) | ||
} | ||
} |