Recent questions tagged Go

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go - How to cross compile from Windows to Linux?

I've installed Go 1.2 on a Windows machine, wrote up a dummy program and set the environment variables GOARCH ... make.bat What does this mean? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to properly seed random number generator

I am trying to generate a random string in Go and here is the code I have written so far: package main import ( ... . How can I improve my code? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Setting HTTP headers

I'm trying to set a header in my Go web server. I'm using gorilla/mux and net/http packages. I'd ... exactly sure how to set response headers? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to format current time using a yyyyMMddHHmmss format?

I'm trying to format the current time using this format yyyyMMddHHmmss. t := time.Now() fmt. ... outputting: yyyyMMddHHmmss Any suggestions? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Why would I make() or new()?

The introduction documents dedicate many paragraphs to explaining the difference between new() and make(), but in ... the pair of allocators? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Using a setter for a struct type does not work as anticipated

Using a setter function for a struct, but not working as anticipated: package main import "fmt" type T struct ... as versus the object itself See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - If I am using channels properly should I need to use mutexes?

If I am using channels properly, should I need to use mutexes to protect against concurrent access? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Change color of a single pixel - Golang image

I want to open jpeg image file, encode it, change some pixel colors, and then save it back as it was. I'd like ... how to do this? Thanks a lot. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Unmarshaling nested JSON objects

There are a few questions on the topic but none of them seem to cover my case, thus I'm creating a new one. I ... to go, I'm fine with that. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Correct way of getting Client's IP Addresses from http.Request

What's the correct way to get all client's IP Addresses from http.Request? In PHP there are a lot of ... Header.Get("X-FORWARDED-FOR")) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Initialize nested struct definition

How do you initialize the following struct? type Sender struct { BankCode string Name string Contact struct { ... t work: undefined: Contact See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to break a long line of code in Golang?

Coming from Python, I'm not used to see code lines longer than 80 columns. So when I encounter this: err := ... s the golangic way to do so? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to broadcast message using channel

I am new to go and I am trying to create a simple chat server where clients can broadcast messages to all ... clients, it would be appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Parsing date/time strings which are not 'standard' formats

How do I parse non-standard date/time strings in Go. In example if I wanted to convert the string 10/15/1983 ... , is my only choice to regex? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to wait for all goroutines to finish without using time.Sleep?

This code selects all xml files in the same folder, as the invoked executable and asynchronously applies processing ... * time.Millisecond) } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go reflect - Iterate through the fields of a struct in Go

Basically, the only way (that I know of) to iterate through the values of the fields of a struct is like this: ... ValueOf(*r).Field(0). Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Is it OK to leave a channel open?

Is it OK to leave a Go channel open forever (never close the channel) if I never check for its state? Will ... replyCh: reply} return <-reply } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to get JSON response from http.Get

I'm trying read JSON data from web, but that code returns empty result. I'm not sure what I'm doing wrong ... func main() { get_content() } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - My object is not updated even if I use the pointer to a type to update it

I store some Individual objects in a slice. Before appending it to the slice I print the name of the Individual ... ", but prints "Steve" } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to use a field of struct or variable value as template name?

We can define template name via {{define "home"}}, and then load it in other (parent) template via {{ ... TemplateName}}. Or it's impossible? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - How to get the pointer of return value from function call?

I just need a pointer to time.Time, so the code below seems invalid: ./c.go:5: cannot take the address of time.Now( ... () { _ = &time.Now() } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Method Sets (Pointer vs Value Receiver)

I am having a hard time understanding as to why are these rules associated with method set of pointer type .vs. ... a receiver of that type. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Passing parameters to cmd.exec function

I want to read the text of multiple PDF files. I could not find proper Go lib, so I'm using ... ://stackoverflow.com/questions/65829916/passing-parameters-to-cmd-exec-function...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Scan the entire folder during file saving

I installed the Go extension for VS Code. This extension installed the following packages: gocode: /Users/oleg/ ... com/questions/65829968/scan-the-entire-folder-during-file-saving...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - gopacket: Use a custom layer 4 protocol

I'd like to use gopacket to decode IP packets with a custom layer 4 protocol inside. I wrote a new ... /stackoverflow.com/questions/65830822/gopacket-use-a-custom-layer-4-protocol...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Data duplication by multiple goroutines

I'm learning about goroutines and channels and have a question about what happens if multiple goroutines ... .com/questions/65832949/data-duplication-by-multiple-goroutines...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Appending/adding to a map with two values

I'm trying to create a map in Go and assign two values to one key based on a regex match within a ... stackoverflow.com/questions/65833012/appending-adding-to-a-map-with-two-values...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - Syntax for gRPC-server stream

In the GetList function the client sends a message and the StreamReply returns RowValue and boolean value ... stackoverflow.com/questions/65833468/syntax-for-grpc-server-stream...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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