初学Golang就记一下go语言的文件操作 Read File func main(){ rw,err := os.Open("") if err != nil { panic(err) } defer rw.Close() rb := bufio.NewReader(rw) for { line, _, err := rb.ReadLine() if err == io.EOF { break } //do something fmt.Println(string(line)) } } ...
因为缓存的数据可能被下一次的读写操作修改,因此一般使用ReadBytes或者ReadString,他们返回的都是数据拷贝func(b *Reader)ReadSlice(delimbyte) (line []byte, errerror)//功能同ReadSlice,返回数据的拷贝func(b *Reader)ReadBytes(delimbyte) ([]byte,error)//功能同ReadBytes,返回字符串func(b *Reader)ReadString...
fmt.Printf("%s\n", content)//*lines, err :=readByLine(testFileName)iferr !=nil { log.Fatal(err) }fori, line :=range lines { fmt.Printf("readByLine: %d %s\n", i+1, line) }//*fmt.Println() lines, err= readLikeTail(testFileName,3)fori, line :=range lines { fmt.Printf...
https://github.com/mymmrac/the-line https://github.com/serialx/hashring https://github.com/smallnest/rpcx https://github.com/1pkg/golatch https://github.com/magefile/mage https://github.com/rung/go-safecast https://github.com/go-task/task https://github.com/dariubs/uniq https://gi...
golangci-lint command line arguments. Note: By default, the.golangci.ymlfile should be at the root of the repository. The location of the configuration file can be changed by using--config= Example uses:golangci/golangci-lint-action@v6with:args:--timeout=30m --config=/my/path/.golan...
We can see that we get individual output for each of our sub-tests. As you might have guessed, our first test case passed but theEmptyandCETtests both failed. Notice how — for the failed test cases — we get the relevant failure message and filename and line number in the output?
packagefile command-line-arguments=C:\Users\DELL\AppData\Local\go-build\2b\2bd6ad0624f0645fa0e5af542f69e648a231ca6a2f9935ff1e8f8de6927004ea-d packagefile fmt=C:\Users\DELL\AppData\Local\go-build\3c\3c35b207ddf783732e75e8e9fce6eb087fc231bd0727113344afa870b7b04083-d ...
return file } // __LINE__ returns the line number at which the function was invoked func LINE() int { _, _, line, _ := runtime.Caller(1) return line } 在同一需求场景下,FILE和LINE分别调用了一次能耗较高的runtime.Caller,这个其实一次就行。可能作者出于功能单一性原则硬是分成两个函数分别...
type TYaml struct { Name string `yaml:"name"` Number int `yaml:"number"` } ty := new(TYaml) yRead := YamlHelper.NewYamlRead() err := yRead.Parse("./test.yaml", &ty) if err != nil { fmt.Println(err) } else { fmt.Printf("%+v\n", ty) } ...
if err != nil { return 0, e.setErrorInfo(err) } //获取自增ID id, _ := result.LastInsertId() return id, nil } //自定义错误格式 func (e *SmallormEngine) setErrorInfo(err error) error { _, file, line, _ := runtime.Caller(1) return errors.New("File: " + file + ":" +...