We are going to do a team function similar to Arena of Valor, there are many rooms in the team. If the room is full of 3 people, you can form a team to match. It is required that the rooms of the same team can no longer be together. currently uses Red...
the jpeg.Decode method of go language decodes a 6720X4480 image, and calls the Bounds method to find that the image is rotated 90 degrees. but I don t rotate when I read a small image, that is to say, the rotation of the decoded image does not occur o...
such as title: package main import ( "github.com gin-gonic gin" "net http" ) func main() { r := gin.Default() r.GET(" login", func(context *gin.Context) { context.HTML(http.StatusOK, "login.h...
< H1 > problem description < H1 > I use the hash table to represent the people on the seat (key represents the seat position, value is the specific uid), and then use hsetnx to process the concurrent seat. but there is a problem that, after the seat ...
recently, learning go wants to judge whether two variables are equal or not. It is found that if the two variables are assigned different types, they will directly report an error when using if judgment . . test.go:123:8: invalid operation: c == d (mis...
problem description the result set data obtained from a requirement query database is not complete. Use the id in the result set to query data from other systems to supplement the complete data to the dataset. This dataset needs to support multi-condi...
problem description func main() { n := 0 go func() { for { n = n+1 } }() for { fmt.Println(n) } } Why does this situation still lead to competition ...
the following is the function used by the backend to generate jwt-token (written by golang), which returns jwt-token to the front end, including username: Sign signs the context with the specified secret. func Sign(ctx *gin.Context, c Context, secre...
if server downtime is excluded, there are other servers available at the same time. In terms of performance, is it better to use a machine with more memory, more processes, and stronger CPU, or is it better to use multiple servers with relatively low pe...
Why can t you find scoreList in if else ...
package main import "fmt" func main(){ p1:=test() p2:=test() fmt.Println(p1(),p2(),p1()) } func test() func ()int { t:=0 return func() int { tPP return t } } the above is one of my exercises, but the re...
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problem description golang s iris framework parses the form into the structure and stops parsing when there are values in the form that do not exist in the structure the environmental background of the problems and what methods you have tried the...
Hello, everyone. For some reasons, I hope to change the https protocol initiated by rancher2 to http, but I don t know how to do it. I also ask familiar seniors to guide the confusion. Thank you ....
such as admin userController index userController in php framework how to create it in beego? I haven t found any documents and instructions similar to this writing method for a long time ...
such as admin userController index userController in php framework how to create it in beego? I haven t found any documents and instructions similar to this writing method for a long time ...
such as admin userController index userController in php framework how to create it in beego? I haven t found any documents and instructions similar to this writing method for a long time ...
here is a sample code for adding, deleting, modifying and querying users: Create creates a new user account. func (u *User) Create() error { return DB.Self.Create(&u).Error } Update updates an user account information. func (u *User) Upd...
as mentioned in the question, does xorm reflect foreign keys directly in the structure? ...
err: = db.Where ( "id =? ", id). First (& activity) .Error {"id": 30, "name": null} the name field of the database is null, but the name in & activity will become " ", how to keep it still null type Activity struct { Id ...
if you have a question, add the code first: if(1===1) { let nameSet = new Set(); if (1 === 2) { do nothing } else { function getArrayFromOl() { console.log( nameSet: , nameSet) } getAr...
problem description when using the antd table component, you want to increment the table sequence number. Now you can only start from 1 for each page. You want the second page sequence number to be incremented from the previous page number, and it is ...
premise: when watching the volatile section of "the Art of Java concurrent programming ", there is a sentence: StoreStore Barrier ensures that all normal writes preceding it are visible to any processor before volatile is written. scenario: publi...
this is exactly how it works. three switch buttons, click to TAB the contents of the picture area, four pictures are displayed side by side, but more than four pictures are displayed side by side, as well as two buttons (left and right buttons). When ...
scenario: the shell script completes the ETL work. The data extraction, transformation and loading operations correspond to three subscripts, all of which are atomic operations and need to be logged. idea: call multiple child scripts to control the wor...