see Lastof.

v express of bool, string, pointer.

v express of bool, string, pointer.

todo move to bytes package.

简短格式， 23.123M.

todo.

string/map/slice/struct or implementation Iterable.

帶超時的寫入channel.

帶超時的寫入channel.

可能的错误，自动检测chan 是否关闭，是否已满阻塞 需要用到reflect，效率上多少折扣呢？.

帶超時的寫入channel.

帶超時的寫入channel.

安全地寫入channel，避免panic，避免阻塞x.

/// see funk.Chunk.

start and wait.

for number type, uintptr.

seperate by commba.

函数组合.

CopyFile copies a file from src to dst.

用于结构体和基本数据类型 拷贝长度按照 src 的长度计算，确保dst足够.

same as officical go.

maybe not null terminate when fake nil tail, but should be very rare.

//////// 把类C语言中的string struct {d,len} 转换为Go string 注：数据引用非拷贝.

todo 可能出现 fatal error: concurrent map read and map write how deal unexport field??? UnsetRO 需要一个更强大的reflect库.

需要关闭的对象的自动处理 *os.File, *http.Response.

https://stackoverflow.com/questions/32482673/how-to-get-directory-total-size 返回，目录个数，文件个数，总文件大小.

background dump exec.Cmd output, stdout/stderr usage: cmdo:=exec.Command(...) gopp.DumpCmdout(...) cmdo.Start() cmdo.Wait().

rounded float point part origin 8h38m46.115296675s now 8h38m46.115s.

好像 reflect.Value.IsZero等于这个函数要实现的功能，并且包括所有的类型包括结构体 string, int*, float*, pointer, map, slice, chan struct == all empty.

ErrPrint 用的最多，其次是 NilPrint, ZeroPrint, TruePrint, FalsePrint.

sofork!!!, error cannot used in union func ErrPrintExcept[T string | error](err error, except T, args ...any) error {.

开头类型为error的，可以多个，之后任意类型 如果没有error类型的开头，则不打印直接返回.

safe.

we want some func in binary even not used when build avoid go link omit unused func he think.

exists returns whether the given file or directory exists or not.

可以避免nil check 还是喜欢这种写法的！ Firstof(vx).Str().

Setup a bare-bones TLS config for the server.

一般 GetCallerInfo(2) return ` funcName, fileName, lineNo` funcName like pkg1/barfun fileName only basename.

added GOROOT/src/runtime/gettid.go \\ see goinct.git/runtime/gettid.go package runtime // return os thread no, 0+, not really os thread id func Gettno() int32 { // struct runtime.p means process return getg().m.p.ptr().id } // this is really pthread_self() value func Gettid() uint64 { // struct runtime.p means process return getg().m.procid } */.

same as officical go.

same as officical go.

俩工具 直接忽略掉变量未使用编译提示.

opt: timeout, nokeepalive.

u: http://ip:port.

parse range: bytes=87458121-97175688.

TODO 要是侯选可以惰性求值就好了，否则在只能一个求值的场景则会有问题 简单的三元运算符模拟函数.

这个好像没有什么用.

等差，且差不等于0.

see unicode.IsNumber().

interface vector to strings.

转换成显式类型.

/.

why there is a newline suffix?.

//////.

可以避免nil check 还是喜欢这种写法的！ Lastof(vx).Str().

todo, LastofG(vx)，这种写法go推导不出来！！！ Usage: LastofG[string](vx).

notify full or timeo.

/////////.

/////////.

go.mallocgc and not move.

func(int) bool.

特化Map函数示例.

该函数没有办法终止，必须完全循环完成。。。 这个函数没法写成范型了吧 模板参数无法表达固定长度数组 返回 array/slice f proto: func(any) any func(any) []any func(int,any) any func(int,any) []any func(int,any,any) any // map only func(int,any,any) []any // map only 返回 maps/hashtable func(any) (any,any) func(int,any) (any,any) func(int,any,any) (any,any) func(any) map[any]any func(int,any) map[any]any func(int,any,any) map[any]any 可以n=>n, n=>n+,n=>n-，具有reduce功能，所以不需要单独的reduce 支持可以迭代的类型：结构体，slice，数组，字符串，map todo fx 的参数可以不用any的 todo fx 可以没有返回值的.

这个可以用 Mapdo 实现，不过这个是带类型的，好点.

func(int) bool.

see Randof.

tool function.

support, slice of number/string.

一个 map中是否包含一个值.

must的含义，断定是某个有效的值，如果不是程序报错退出。 @param f raw function, like strings.ToUpper.

最后一个参数为 error 类型，则检测err的值 返回除最后一个 error 参数外的其他参数，顺序不变 Usage: Mustify(foo()).

除了error之外，还有0个返回值.

除了error之外，还有1个返回值.

除了error之外，还有2个返回值.

pkg.(*class).name pkg.name bare_ for bare name only.

if not n, then full.

bits 0, 40(sha1), 64(crc64), 128(md5), 256(sha256), 512(sha512).

eno 模擬可選參數.

New creates and starts a new GCNotifier.

timeoms == 0, use default value.

指数递增模式，默认需要自己Sleep() 默认初始100ms，等待间隔按照1.5倍递增， 即第一次100ms，第二次150ms，第三次225ms todo 需要添加个倍率参数 usage: rter := NewRetry() || Retry(1) time.Sleep(rter.NextWaitOnly()).

...

指数递增模式，指定回调函数.

指数递增模式，指定回调函数 回调函数返回error!=nil表示重试，nil表示结束重试 对于有返回值的情况，需要自己处理 usage: rter := NewRetryFng(fn) rter.Do(...).

hosts: default nil days: must > 0 rsaBits: default 0 */.

BUG: panic: reflect: call of reflect.Value.IsNil on uint64 Value.

去掉返回值中的error 返回值个数不能是变长的.

NOT mean: error != nil or bool == false or int == 0 or pointer == nil or string == "" other what?.

if integer, number, must use var's addr, like , a := 5; &a 一般用于数字类型的操作，指针类型的强制转换 TODO 考虑类型的存储大小，防止丢失精度 ptr usage: var s *MyFileStat; OpAssign(&s, &os.FileStat{}) 返回值为*tovalp.

usage: defer Panicp().

usage: defer func(){Panicp(recover())}() do use like this: defer gopp.Panicp(recover()) because need lazy call recover() need macro in golang.

only ip:port, if ip part is a domain name, this will fail.

Enter works.

使用默认的http server handler.

no use??? usage: Progn(Retn(f1(...)), Retn(f2(...)), Retn(f3(...))).

TODO 首位不能为零 TODO 小数点呢.

string + string vs []string join的速度.

25.55 ns/op 不新分配内存就是快 但是最好不要太大的n，内存一直在.

第二种方式，采用channel。由于用到一个goroutine，可能效率慢 果然这个速度慢，不要使用，8290 ns/op.

reduce func(elem interface{}, iv interface{}) interface{}.

func(elem interface{}, iv interface{}) interface{}.

支持>=1个参数的函数.

go:linkname Rtfindfunc runtime.findfunc.

go:linkname Rtfuncfile runtime.funcfile.

go:linkname Rtfuncname runtime.funcname.

go:linkname Rtfuncpkgpath runtime.funcpkgpath.

try process cmd like safe: "ls -v -h" => ["ls", "-v", "-h"] or: ["ls -v", "-h"] => ["ls", "-v", "-h"] or: ["ls", "-v", "-h"] => ["ls", "-v", "-h"] or: ["ls", "-v", "-h"] => ["ls", "-v", "-h"] EO=STDERR and STDOUT (combined, stdout, stderr).

RunCmdOut runs a comand and returns the commands output, or an error.

不需要等待执行完成就能输出.

安全地寫入channel，避免panic，避免阻塞.

SafeWriteFile is a drop-in replacement for ioutil.WriteFile; but SafeWriteFile writes data to a temporary file first and only upon success renames that file to filename.

写法比较： 1*time.Second gopp.Secondof(1).

同时select一组不同类型的channel.

dont move.

offset [0-14).

原地重排.

safe version.

比写 []string{}方便.

also need a copy, if not modify original one.

see https://github.com/tidwall/evio.

line support TODO one line exceed n???.

按长度切割字符串.

rune support.

rune support, utf8 3byte, but ui width is 2.

string seperator support.

note: 不能处理常量字符串。最大64KB.

常量字符串失败.

note: 不能处理常量字符串。最大64KB.

for ui, ascii = 1, else 2.

更安全的refc字符串.

安全提取子字符串。支持负值，表示从后面.

类似C++的overload name resolve @param args 传递的实参值 @param vtys 候选函数形参类型 @return 返回候选函数索引值，失败返回-1 */.

直接传递候选函数的方式 类似C++的overload name resolve @param args 传递的实参值 @param fns 候选函数列表 @return 返回候选函数索引值，失败返回-1 */.

一般命令行都是按字符串的，按行的，所以返回值就特化一点吧.

verbose.

中文常用格式.

仅Title第一个字节.

openssl x509 -noout -fingerprint -sha256 -inform pem -in [certificate-file.crt] openssl x509 -noout -fingerprint -sha1 -inform pem -in [certificate-file.crt] openssl x509 -noout -fingerprint -md5 -inform pem -in [certificate-file.crt] */.

support bool, string, *int*, uintptr, unsafe.Pointer, float*.

把一个值转换为数组切片 如果本身即为数组切片，则显式转换为数组类型 如果本身不是数组切片，则把该值作为返回数组切片的第一个值。.

if not exist, then create empty file.

///.

/////// runtime.SetFinalizer(x, UniverseFree).

仅Title第一个字节.

safe mode.

一个vector/slice中是否包含一个值.

supported: number,string,pointer.

BO_POWER2.

%s=base64encode(user:pass).

%s=base64encode(user:pass).

"Sat, 30 Sep 2017 00:10:59 GMT".

telnet, ftp, email.

get a next retry time.

go:linkname CanceledError net.canceledError.

go:linkname ErrClosed os.ErrClosed.

go:linkname ErrTimeout net.errTimeout.

src/internal/abi Type is the runtime representation of a Go type.

//// CallLater.

模拟写入源代码的文件系统.

/// Deduper.

Error with errno and stack info.

1.5.

backoff too quick 1.9.

A fileStat is the implementation of FileInfo returned by Stat and Lstat.

1.0.

from functional_go.pdf.

GCNotifier allows your code to control and receive notifications every time the garbage collector runs.

typedef struct { void *t; void *v; } GoInterface;.

typedef struct { void *data; GoInt len; GoInt cap; } GoSlice;.

typedef struct { const char *p; ptrdiff_t n; } _GoString_;.

///.

ordered map, thread safe, reversemap 实现从头部删除，或者尾部删除 按照随机index删除速度就慢了.

ordered map, thread safe, reversemap.

/// Logdeduper.

.

.

1.1.

mixed queue and map features.

/ only calc next time, not do run avoid retry times.

用channel模拟的实现方式。 */.

封装的无锁rb，用一个比较丑的方式修正原来实现Get的100% CPU问题 */.

.

type i128 = [16]uint8 type u128 = [16]byte.

Value is the reflection interface to a Go value.

Complex is a constraint that permits any complex numeric type.

Float is a constraint that permits any floating-point type.

Integer is a constraint that permits any integer type.

TODO.

Ordered is a constraint that permits any ordered type: any type that supports the operators < <= >= >.

TODO general version Picker TODO other algo version Picker, like random, consistent hash.

weight大，优先级高.

Signed is a constraint that permits any signed integer type.

Unsigned is a constraint that permits any unsigned integer type.

TODO CPU Pause ABA问题预防 - DCAS note: not copy.

常用函数原型.

TODO how add methods for Any type TODO how add methods for primity string type.

gopp.MapSS // 这个还是更简短些 map[string]string.

NameOff is the offset to a name from moduledata.types.

/// type moduledata deps.

TextOff is an offset from the top of a text section.

TFlag is used by a Type to signal what extra type information is available in the memory directly following the Type value.

TypeOff is the offset to a type from moduledata.types.

exported.