Golang StrConv The use of data type conversions

This is a creation in Article, where the information may have evolved or changed.

StrConv is a library used by Golang to do data type conversions.

Introduce the two most commonly used methods under StrConv, although it is not easy to explain the language so freely can be str (int), int (string), that is concise.

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http://xiaorui.cc/2016/03/08/golang-strconv%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B%E8%BD%AC%E6%8D%A2%E7%9A%84%E7% 94%a8%e6%b3%95/

Python <textarea wrap="soft" class="crayon-plain print-no" data-settings="" readonly="" style="-moz-tab-size:4; -o-tab-size:4; -webkit-tab-size:4; tab-size:4; font-size: 12px !important; line-height: 15px !important;">#xiaorui. Ccatoi (String to int) func Atoi (S string) (i int, err error) Itoa (int to string) func Itoa (i int) string</textarea>

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#xiaorui. CCAtoi (string toint)funcAtoi(s string) (I int, ErrError)Itoa (int tostring)funcItoa(I int) string

Examples of use of Atoi itoa:

Python <textarea wrap="soft" class="crayon-plain print-no" data-settings="" readonly="" style="-moz-tab-size:4; -o-tab-size:4; -webkit-tab-size:4; tab-size:4; font-size: 12px !important; line-height: 15px !important;">I, err: = StrConv. Atoi (" -42") s: = StrConv. Itoa ( -42)</textarea>

123	& nbsp i err : = strconv Span class= "Crayon-sy". atoi ( " -42" s : = strconv itoa ( - 42 )

The following is a complete example:

Python Package <textarea wrap="soft" class="crayon-plain print-no" data-settings="" readonly="" style="-moz-tab-size:4; -o-tab-size:4; -webkit-tab-size:4; tab-size:4; font-size: 12px !important; line-height: 15px !important;">main//xiaorui.cc Import ("StrConv") func main () {i, Err: = StrConv. Atoi ("8888") if err! = Nil {panic (err)} i + = 3 println (i) s: = StrConv. Itoa (333) s + = "3" println (s)}</textarea>

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PackageMain//Xiaorui.ccImport (    "StrConv")funcMain() {    I, Err := StrConv.Atoi("8888")    if Err != Nil {        Panic(Err)    }    I += 3    println(I)          s := StrConv.Itoa(333)    s += "3"    println(s)}

StrConv is not just a type of conversion between a string and an int, but there are many more ways to do it.

Format xxx turns into string strings

Python <textarea wrap="soft" class="crayon-plain print-no" data-settings="" readonly="" style="-moz-tab-size:4; -o-tab-size:4; -webkit-tab-size:4; tab-size:4; font-size: 12px !important; line-height: 15px !important;">Formatboolfunc Formatbool (b bool) Stringformatfloatfunc formatfloat (f float64, FMT Byte, prec, Bitsize int) stringfor Matintfunc Formatint (i int64, base int) Stringformatuintfunc Formatuint (i uint64, base int) string</textarea>

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FormatboolfuncFormatbool(b BOOL) stringformatfloatfuncformatfloat(F float64, FMTbyte, Prec, bitsizeint) stringFormatintfuncFormatint(I Int64, Baseint) stringFormatuintfuncFormatuint(I UInt64, Baseint) string

Examples of Formatint:

Result: = StrConv. Formatint (Int64 (value), 10)

Parse xxx is turned into the appropriate format

Python <textarea wrap="soft" class="crayon-plain print-no" data-settings="" readonly="" style="-moz-tab-size:4; -o-tab-size:4; -webkit-tab-size:4; tab-size:4; font-size: 12px !important; line-height: 15px !important;">convert to bool type. B, err: = StrConv. Parsebool ("true") is converted to float type F, err: = StrConv. Parsefloat ("3.1415", 64) is converted to int type I, err: = StrConv. parseint ("42", 10, 64) turns into UINT type U, err: = StrConv. Parseuint ("A", "Ten,")</textarea>

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Converted IntoBOOLType.b, Err := StrConv.Parsebool("true")Converted IntoFloatTypeF, Err := StrConv.parsefloat("3.1415", -)Converted IntointTypeI, Err := StrConv.parseint(" -42", Ten, -)Turn intoUINTTypeu, Err := StrConv.Parseuint(" A", Ten, -)

Golang type Conversion There is nothing to say, not clear directly to see the official documents.