after go gorm select, the result set or all struct are returned, except that the other fields are empty the environmental background of the problems and what methods you have tried related codes db.Debug (). Where (s). Select ([] string { "id ", ...
in RabbitMQ s go support library, there are two methods func (ch * Channel) Ack (tag uint64, multiple bool) error and func (d Delivery) Ack (multiple bool) error but do not understand the difference between these two methods? the description of ...
what is the reason for this and how to modify it? var reg_pattern = regexp.MustCompile("^(<a> d)( d)( d) 1 2 3$") if reg_pattern.MatchString(convert.IntToStr(uid)) { return true } panic: regexp:...
there are functions as follows package main import "fmt " func intSeq () func () int { i := 0 return func() int { i += 1 return i } } func main () { nextInt := intSeq() fmt.Println(nextInt()) fmt.Println(nextInt()) fmt.Println(nextInt()) ...
$m = new Memcached(); $res = $m->get( key ); if(empty($res)) { $ret = $m->set( key ); $ret && $this->insert($data); } Why does the insert data repeat in the above code? What is the correct way to write it? ...
I think it is encryption first, compression, base64 conversion, I do not know whether it is correct, and what encryption algorithm is generally used for encryption ...
problem description can gorm register functions executed before the query? I want to record the time spent on the query. It is known that gorm has the function AfterFind, executed after the end of the query to get the time at the end of the query. Ho...
Let s start with a simple piece of code: ...
A registration scenario, operation 1, when the user registers, the account is generated on the sub-platform, operation 2, the rpc service is invoked, and the account is generated on the main platform (1 and 2 are two different databases). The problem is ...
there are two serial services, one written by go and the other written by Python. use regular verification email address, found that the results of the two code verification are not consistent, and now want to unify the verification effect. Regular exp...
problem description I want to use php to call golang s grpc service for communication, but I m afraid to modify the program after it goes online. I want to modify the program without downtime. I want to know how to hot restart golang s grpc service...
problem description the environmental background of the problems and what methods you have tried Val is a member variable of TreeNode structure stack.Peek () the return value is (bool, interface {}) related codes _, _top := stack.Peek() ...
ask for advice: there is a file test.in that contains 6 5 3 4 to read, but after reading 65, it will read a 0 and then read 3 code as follows file, err := os.Open("test.in") if err != nil { panic(err) } var one, two,third,four int ...
package main import "fmt" func main() { m := make(map[string]int) m["k1"] = 7 m["k2"] = 13 fmt.Println("map:", m) } The program is simple, but there are many such warnings. How to deal with ...
problem description: the problem we encountered this morning has been going on all morning, but we still haven t found out what the problem is. Come to ask purpose: use gorm to modify the Boolean value of a field in the database table Code f...
after uploading the certificate, I click the notification bar message to test my single iPhone machine, always indicating that the device is not registered, but I have created two devices to make sure they are created successfully, as follows: ...
I just contacted websocket. I don t know what the correct posture for the server to maintain (store) websocket links should look like. ask Thank you! ...
description wants to be a data component similar to orm. If you encounter this problem, convert the response of a [] map [string] interface {} into a structure array of the corresponding type . ideas read the source code of orm and some articles on...
is it static to call a function directly? using reflection is a dynamic call? Where is this dynamic in dynamic invocation? the newcomer has little knowledge, so I would like to ask your seniors for an answer ...
1. I want to automatically run the go language by pressing F5, but I still can t OK? after searching the data. so seek the truth, do not know how to configure and debug ~ 2, I want to use vscode to debug go, but do not know how to play tools, read th...
each server generated by node must be assigned a port. So if we encounter a requirement in our work: let the same port or address support both http and https protocols, HTTP and HTTPS both belong to the application layer protocol, so as long as we rever...
the only thing I can think of now is to save the current canvas to an array every time I finish drawing, and then take it out of the array when I undo it ...
suppose we have a sql query that will take 2 seconds. We cache the results of this sql query to redis and set a 60-second timeout. so when 60 seconds arrive, that is, two seconds from 60 to 62 seconds, hundreds of requests may miss the cache and query ...
mysqli_fetch_array() expects parameter 1 to be mysqli_result, boolean it is OK on the local side, but such an error occurs after ubuntu my local side and ubuntu both install php7 . The difference is that it is possible that I am 7.2.2 ubuntu is 7, but ...
such as the title, recently, when I was reading some articles on distributed transactions, I saw some nouns, such as TCC and 2PC , but after reading them for a long time, I felt that the two seemed to be about the same. I can t see the difference. I hop...