r/golang

I'm currently learning golang from Learn Go with Tests and I am almost done with it but still I'm not getting confidence in Context, Reading Files, Templating and Generics. Like it really makes me wonder about the way I'm learning it. Can u people suggest a site or a channel from which I can learn these topics easily.

I have a function that loops through a CSV file looking for specific field names and captured the index of the field for later data collection.

Unfortunately, the organization (not mine) that creates the csv file is prone to randomly add field or move the data to a different column, but the column names are consistent.

To help detect if they changed a field name or omitted it altogether, what I want to do is set the field index to -1 and then use something like Python's "any()" function to say if any of (list of variables) = -1 after parsing the header row, then log the error and quit :) .

what would be a good way to implement this in Go?

var ( 
     firstIndex int = -1
     secondIndex int = -1
)

for {} // loop checks all of the headers and sets index to the index value.

//psuedo code
check the value of each index variable. if any equal negative one, return error. 

I hope that this makes sense. My thought is that I could put the indexes into a map , slice, struct, etc to make looping easier. but I'm still pretty new to Go. And no, I haven't asked AI yet, but that is a good idea!

Ideas?

I do not know how other teams put up with this. Our security scan runs on every PR and re-reads the whole repo each time, it is always the slowest step by a mile, slower than the build and the tests put together. During an outage last month it sat on a one line fix long enough that a lead just force merged past it and I did not blame him.

And now that is normal. People skip the scan whenever they are in a rush, which is most of the time then it still shows green on the dashboard so on paper nothing is wrong. A gate everyone routes around is not really a gate, it just looks like one in the audit.

So I am trying to work out how you make it fast enough that skipping it stops being the obvious move. Incremental scans that only look at what changed. Something in the editor you see it while you type instead of waiting on the pipeline. Both maybe. What is working for you, and did you give up coverage to get the speed.

REMOTE TASKFILES ARE GENERALLY AVAILABLE!!

After 3 years being an experimental feature, this is now enabled by default.

You can now run and import Taskfile from a remote location, like a remote Git repository.

I am noodling on my own hobby programming language similar to Go in some respects. One aspect my language shares with Go is that there is no subtyping but types are assignable to interface types.

Now I'm trying to work out the syntax for that assignability. In Go, I know you can assign a concrete type to an interface type using a variable declaration:

type Concrete struct {
  n int64
}

type Abstract interface{}

func main() {
  var x Abstract = Concrete{1} // <--
}

This works, but requires you to write a statement and be in a position where you can do so. Is there a corresponding expression form that accomplishes the same thing? As far as I can tell, the answer is no. Type assertions are only used for "casting" the other way, from an interface to a concrete type.

(In Go, arguments will be converted to the expected parameter in calls as well. That won't work well in my language since my language has overloading and that would heavily complicate overload resolution.)

This is the weekly thread for Small Projects.

The point of this thread is to have looser posting standards than the main board. As such, projects are pretty much only removed from here by the mods for being completely unrelated to Go. However, Reddit often labels posts full of links as being spam, even when they are perfectly sensible things like links to projects, godocs, and an example. r/golang mods are not the ones removing things from this thread and we will allow them as we see the removals.

Please also avoid posts like "why", "we've got a dozen of those", "that looks like AI slop", etc. This the place to put any project people feel like sharing without worrying about those criteria.

I was writing a status page for phpscript, and kept upgrading it to the point I wanted to make it reusable between projects, as a quick live view. It was too nice to keep it hidden away under internals.

If you want to start with observability without pulling in opentelemetry or run additional services, oida lets you collect traces and view them, monitor memory usage, GC.

The initial implementation was meant to be closer to lighthttp/nginx status page where you can see requests in flight. I spent a lot of time polishing the front end, migrated to templ, and spent too much time on timeline visualizations (discarded several other attempts - voronoi, voxels, circles, lines, and timeline). It outgrew the basic use case.

I used claude to assist with migrating/updating/extracting the package from phpscript, usage docs. I did heavy manual QA as well, polishing it for usage. Would love some adoption by solo devs or small teams, people doing local development who maybe don't have telemetry at all. If you're missing something, shout out!

Edit: here are the screenshots, to save you a click.

So i have a CLI app built with go , really simple one actually I start the program I get menu option I enter input something happens .
But i want to change it to make it like a tool that runs in background and i enter toolname to access its functionality through terminal anytime . I have never made something like this so i though I could ask community for help

Hi!

I was working in the Web development 11 years aprox

Most time i was working like frontend developer (i worked with jquery, AngularJS, Angular, React…) also i was working too in some project like fullstack (with php and node.js in back side)

I discovered golang and i was following this years and i love it!

What path do you recommend to me for make the transition from frontend js world to golang?

What kind of side projects recommend to me for create a valid portfolio for find work with golang?

Thanks!

I’m primarily a Java developer. In my previous company, I worked almost exclusively with Java, and I have a good command of DSA in Java as well.
I recently switched to another company where I’m working with both Java and Go. From what I’ve seen so far, the Go team is working on some really interesting problems, especially around system scalability and performance, compared to the Java side.
Because of this, I’m considering moving completely toward Go for my future career. My main question is: Should I start doing DSA in Go as well, or should I continue practicing DSA in Java?
If I’m planning to switch to Go-focused roles in the future, would knowing DSA in Go give me any advantage during interviews, or is it better to stick with Java since the concepts are what matter?
Honestly, I’m also getting a bit tired of writing the same kind of Java code and would like to explore Go more seriously.
Would appreciate advice from people who have made a similar transition from Java to Go.

Btw i have just joined the new company like 1 month ago.