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Have you ever used goquery? I want to use an agent to crawl. Does goquery support it? I looked for it and didn't seem to find it.
have you ever used goquery? I want to use an agent to crawl. Does goquery support it? After looking for it, I don t seem to find ....
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Please take a look at the code. I want to write a tool to export data from the database to excel. Although it has been implemented at present, the execution efficiency is very slow.
Overview: the younger brother s program can query the sql in the database and write it into excel performance by entering the database type, database connection string, executing sql or files containing sql. Currently, 25W pieces of data are exported,...
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Difference between value type and reference type of lock in golang
introduce Mutex into the object to ensure atomicity, but when the object is a value reference, it is found that the cable has no effect. What is its internal implementation logic?
the code is as follows:
package main
import (
"fmt"
...
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What if one out of 1 million people cannot generate a QR code?
popularize the QR code what to do when 1 out of 1 million people cannot generate a QR code? ...
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Unknown GOARCH: "" appears in gomobile bind-target=ios
I want to package an ios sdk, instruction with gomobile bind instruction. There is always a unknown GOARCH: " " error in the execution of the sdk, instruction. The error is as follows:
AndroidmacGOARCH,
...
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Golang's TCP Services Framework
has anyone ever used a reliable golang TCP services framework? the framework had better have the following two modules: 1. Session management of connections 2. The framework can customize the protocol ...
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Mysql cannot log in remotely [red packet]
firewall, the integrated environment of system Centos7, lnmp.org, does not have the permission to run mysql. Iptables has been restarted. Refresh authorization error:
Mysql user:Iptables:
New processing: 1. Modify mysql configuration file vi ...
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How does a go TCP connect to a http service to get a response?
goal: golang service, prepare to get banner information of ip:port. if ip:port is http, you can get http response, if it is ssh service, you can get ssh service output information. Such as version information.
pre-condition: the corresponding tcpAddr...
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How to solve the problem of go language [mysql] packets.go:436: busy buffer?
< hr >
finally found that time.Sleep (100 * time.Millisecond) will affect the database. After removing it, I didn t encounter the problem of busy buffer .
< hr >
I have encountered some problems in converting a piece of data from Table 1 to Table ...
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Golang json: cannot unmarshal object into Go value of type error
other people s project code is as follows
jsonStr := `{"Name":"lepig", "Age":100}`
abc := []byte(jsonStr)
var result []string
if err := json.Unmarshal(abc, &result); err != nil {
fmt.Println(err)
...
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The problem of xml Transformation in golang gin Framework
how do I convert it?
func GetPlan(c *gin.Context){
expect := c.PostForm("expect")
prevexpect,_ := strconv.Atoi(PrevExpect())
sql := "SELECT * from plan pl " +
"left JOIN program pr on pl.program_id = p...
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What is the use of golang's interface?
I can accomplish all kinds of business requirements without this thing. What s the use of this? ...
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Rc.local failed to boot and execute the application written in Go
etc rc.d rc.local and etc rc.local are both given execution permissions etc rc.d rc.local and etc rc.local are configured as follows
-sharp! bin bash
-sharp THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES
-sharp
-sharp It is highly advisable to ...
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How to control the permissions of the background button in beego?
ask for advice background uses beego to build scenario description: background has some operations for each row of data, such as editing and deletion, etc. Now the server has passed the InsertFilter time before routing permission detection. now it j...
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I would like to ask go websocket server how to achieve file upload? Is there any specific reference?
recently encountered a problem, go write websocket server how to achieve file upload function? Baidu Google did not find the answer they wanted. Is there any example of a third party or that can run successfully?
tried to search for some answers, but ...
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In Go web development, how to dynamically insert different number of subtemplates?
1. Is learning the go language and trying to write a website, one of the functions is that after the user logs in, all the file directories contained by the user are displayed on the home page of the user, that is, the file information is mapped. At pres...
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If you want to close a specified one of several collaborators, you can use Context to control it. If you want to close a specified one, do you still use Context?
whether this situation can only be judged by sync.Map and Channel ....
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Which language is more suitable for short video website development?
which language has more advantages in building short video websites? The mobile phone will be used later. Is there any similar source code reference for ? ...
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Can mgo register some functions and execute them automatically before or after the query is executed?
similar to GORM, execute some functions before and after executing the query by registering them
db.Callback().Create().Before("gorm:create").Register("update_created_at", updateCreated)
db.Callback().Create().After("gorm:creat...
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How to realize service degradation
I am thinking about a question: how to downgrade the service?
for example, there was an interface before, and an average was determined through the other three interfaces. Hypothetically, it doesn t necessarily make sense. To get the location of the ...
