golang profiling

arrow pointing to the block is the memory of the cumulative allocation of the stack of records, the amount of memory allocated for the other functions called by the function from the number indicated by the arrow on the block. The difference between them can be simply understood as this function, in addition to calling other functions, its own allocation. The numbers inside the block also reflect this, and the numbers are: (自身分配的内存 of 该函数累积分配的内存) . --inuse/alloc_space--inuse/alloc_objectsDiffer

Golang Learning Notes Golang type conversion finishing go language string, int, int64, float64, complex convert each other #string到intInt,err:=strconv. Atoi (String)#string到int64Int64, err: = StrConv. parseint (String, 10, 64)#int到stringString:=strconv. Itoa (int)#int64到stringString:=strconv. Formatint (int64,10) #int到int64, turn int into a string and then turn to int64, return with the Err parameter need t

for range, the values of the matcher and feed variables are locked at the same time as the arguments passed into the anonymous function closure. When you use closures to access external variables, ask yourself how this variable will change, and how this change affects the operation of the closure. Resources: Http://devs.cloudimmunity.com/gotchas-and-common-mistakes-in-go-golang/index.html#closure_for_it_vars http://studygolang.com/articles

We know that the local variable initialization method in Golang (using ": =" to create and assign values) makes it convenient to use variables. However, this is also one of the places where mistakes are easy to make. In particular, this initializer also supports the initialization of multiple variables at the same time, and more particularly, it also supports the original variable assignment and new variable creation and assignment at the same time! T

Conclusion:golang不支持解析string然后执行。golang的反射机制只能存在于已经存在的对象上面。It is not known whether the subsequent versions are planned, and now only the registration can be loaded, and then a reflection similar to the Java Factory pattern is implemented.code example: T: = reflect. ValueOf (human{}). Type () // H: = reflect. New (t). Elem () // New return address pointer h: = reflect. New (t). Interface () FMT. Println (h) hh:= H. (*Human) FMT

Golang Study Notes [5] integer and golang Study Notes integer Golang has many integer classes, but generally it is better to use int or uintt, Package mainimport ("fmt" "unsafe") func main () {var i1 int8 = 1 // 1 bytevar i2 int16 = 2 // 2 bytevar i3 = 3 // 4 bytevar i4 int64 = 4 // 8 bytevar i5 int = 5 // 32-bit: 4 64-bit: 8var i6 uint8 = 1 // 1 bytevar i7 ui

Golang and php calculate the distance between two latitude and longitude. golang latitude and longitude This article describes how golang and php calculate the distance between two latitudes. We will share this with you for your reference. The details are as follows: Golang version:Copy codeThe Code is as follows: pack

2017 Golang, Python, PHP, C + +, C, Java, Nodejs performance comparisonI in Php/c++/go/py, whim, want to make a simple comparison of the recent mainstream programming language performance, as to how to compare, still have to use the Magic Fibonacci algorithm. It may be more common or fun. Okay, talk is cheap, show me your code! Turn on your Mac, open Clion and start coding!1. The first is go, because I personally recently used, feel very goodPackage M

1.golang generate c-shared type to soSet up folder Hello, create the Main.go file with the contents as followsPackage Mainimport "C" Func Main () {}//export hellofunc hello () string {return "Hello"}//export Testfunc Test () {println ("E Xport Test ")}Generate so script file, command line:Genetic libhello.so libhello.h File2.c Language Call libhello.soCopy the libhello.so to the/usr/lib for runningCreate a new folder Hello_test, copy the libhello.so l

# #Golang unittest Unit Test Golang unit tests have strict requirements on file names and method names, and parameters. For example: 1, the file name must be named Xx_test.go 2, the method must be test[^a-z] Start 3, the method parameter must t *testing. T Before because the 2nd did not write right, led to find a half-day error. Now really memorable, ah, little things were not carefully read. Let's share

function from the number indicated by the arrow on the block. The difference between them can be simply understood as this function, in addition to calling other functions, its own allocation. The numbers inside the block also reflect this, and the numbers are: (自身分配的内存 of 该函数累积分配的内存) . --inuse/alloc_space--inuse/alloc_objectsDifference Typically: Use --inuse_space to analyze the occupancy of the program resident memory; Use --alloc_objects to analyze the temporary allocation of me

Golang basics and golang Basics1. Inheritance overload is not supported. For example, for C ++ Java interfaces, modification of interfaces will affect the modification of class behavior of the entire interface to be modified. Go designers think this feature may be useless. 2. Any function definition must be followed by curly brackets after the function declaration and cannot be wrapped in a line break such

Golang File Reading implementation method, golang File ReadingRead files Put the Read file in file/test: that is, the test file under the file package. Write more files in it. Method 1: Use ioutil. ReadFile to directly read from the file to [] byte func Read0() (string){ f, err := ioutil.ReadFile("file/test") if err != nil { fmt.Println("read fail", err) } return string(f)} Method 2: rea

the original code when expanding the function. Regardless of the software refactoring level, when the new recruits take over the boss's code, I think the most headache is to increase demand, because you do not know what to change the code to bring a hidden BUG.We always ideal can use the "plug-in" thinking to adapt to demand, write a good framework, and then classify, each of the abstract role is a large container, and then each time to the container plug into a plug-in, to a demand, do a plug-

This is a creation in Article, where the information may have evolved or changed. Gojson is a Golang package that quickly parses JSON data, which you can use to quickly find data in JSON Installation go get github.com/widuu/gojson Introduction to use Structure type Js struct { data interface{}} (1) func Json(data) *Js data is a string type, initializes the JS structure, parses the JSON and returnJs.data json := `{"from":"en","to":"zh"}`

This is a creation in Article, where the information may have evolved or changed. As introduced in the overview post, a Go module was a collection of packages versioned as a unit, along with a go.mod file Listing other required modules. The move to modules is a opportunity for us to revisit and fix many details of how the GO command manages source code. The current go get model would be is about ten years old when we retire it in favor of modules. We need to make sure that the module design woul

This is a created article in which the information may have evolved or changed. 1. Download: Golang installation package: https://code.google.com/p/go/downloads/detail?name=go1.1.2.darwin-amd64.pkgcan=2q= Eclipse Tool: HTTP://WWW.ECLIPSE.ORG/DOWNLOADS/PACKAGES/ECLIPSE-IDE-JAVA-DEVELOPERS/KEPLERSR1 (I'm under the Java edition) 2. Install GO1.1.2.DARWIN-AMD64.PKG, the directory will be automatically created on Mac OS after installation is com

This is a creation in Article, where the information may have evolved or changed. The practice of writing this problem with Golang is completely different, using the Gorutine, channel, writing a very interesting Title Description: leetcode 566. Reshape The Matrix in MATLAB, there is a very useful function called ' reshape ', which can reshape a Matrix int o A new one with different size and keep its original data. You ' re given a matrix represe

. When you use closures to access external variables, ask yourself how this variable will change, and how this change affects the operation of the closure. Reference: Http://devs.cloudimmunity.com/gotchas-and-common-mistakes-in-go-golang/index.html#closure_for_it_ VARs http://studygolang.com/articles/7994 http://studygolang.com/articles/4738 http://blog.csdn.net/ htyu_0203_39/article/details/50985187 http://studygolang.com/articles/356 http://w

This is a created article in which the information may have evolved or changed. Win7 (64-bit) under Eclipse configuration Golang using third-party libraries 1. Install the Windows Client for git: Git's Windows client download address (required can be found directly from the resources I upload): http://code.google.com/p/msysgit/downloads/list?q=full+installer+official+git Installation process all the way next, there is a step to note, this step