Phuong Le @func25

A Go writer who has just moved to Twi... X, I write clickbaity content and am currently open to new opportunities. blog.devtrovert.com Joined August 2014

Tweets

488
Followers

3K
Following

78
Likes

1K

Phuong Le @func25

5 hours ago

💡 Golang Tip #81: To check if a string is empty, prefer s != "" over len(s) == 0. Both solutions are perfectly fine and both techniques are commonly seen in Go's standard libraries. > But what's the difference? Why should we prefer s != ""? Using len(..) works for different…

1 2 36 2K 10

Download Image

Phuong Le @func25

7 hours ago

Okay, I found a way to make everyone focus on the topic

0 0 5 610 0

Download Image

Phuong Le @func25

a day ago

This is such a damn good list, I just spent the whole day playing around with it. collabnix.github.io/kubetools/

0 11 51 4K 53

Phuong Le @func25

2 days ago

💡 Golang Tip #80: Declare variables NEAR their usage This is a common mistake among those who have been using Go for a little while. People often put all the variables at the top of the function, and even worse, they use 'var': While this might look neat or seem like a simple…

2 4 76 4K 20

Download Image

Navalism @NavalismHQ

3 days ago

"Write to learn, not to teach." @naval

15 103 899 41K 132

Phuong Le @func25

4 days ago

💡 Golang Tip #79: If doing something unusual, comment why I've been reviewing code for a while, and realized that one of the most common and frustrating issues is the lack of comments explaining unusual code choices. When we've worked with Go long enough, we understand that…

3 6 69 4K 21

Download Image

Phuong Le @func25

2 weeks ago

💡Golang Tip #78: Non-blocking channel send trick When we send a value to a channel, we typically wait for the receiver to be ready to take the value: But there are times when we don't want to wait. For example, if you've followed the previous tip on using semaphore, we could…

3 8 74 4K 49

Download Image

Phuong Le @func25

2 weeks ago

💡Golang Tip #77: Buffered channels as semaphores to limit goroutine execution When we need to manage 'how many goroutines can access a resource simultaneously', using a semaphore is a reliable approach. We can create a semaphore using a buffered channel, where the channel's…

1 22 131 10K 83

Download Image

Phuong Le @func25

3 weeks ago

💡 Golang Tip #76: Result forwarding in function calls. When I first started using Go, I found one concept a bit tricky: result forwarding in function calls. It's common to get multiple values back from a function, usually a result along with an error, look at how we handle the…

4 9 99 9K 63

Download Image

Phuong Le @func25

3 weeks ago

💡Golang Tip #75: Optimize multiple calls with singleflight. Let's consider you've got a function that fetches data from the network or performs some I/O and it takes around 3 seconds: The above function emits a different number after 10 seconds. - Now, if you call this…

3 15 112 10K 88

Download Image

Phuong Le @func25

3 weeks ago

💡 Golang Tip #74: Make time.Duration clear and easy to understand When you're coding with time intervals, you'll be using the time.Duration type a lot. A common issue that can make things confusing is when you use seconds: In Go, it's usually NOT the usual way to do it, but if…

0 4 62 3K 23

Download Image

Phuong Le @func25

3 weeks ago

💡 Golang Tip #73: Implement String() for enum with the stringer tool. Have you noticed when you print a duration in Go, like fmt.Println(time.Second), it shows up as "1s" instead of "1000000000" while time.Duration is int64. This is because the time.Duration type has a…

3 5 84 4K 43

Download Image

Phuong Le @func25

3 weeks ago

💡Golang Tip #72: Case-Insensitive string comparison with strings.EqualFold. When you need to compare strings without caring about whether the letters are upper or lower case, you might think to: - Make both strings lower case using strings.ToLower() - Or make them both upper…

2 4 110 4K 35

Download Image

Phuong Le @func25

3 weeks ago

💡 Golang Tip #71: sync.Pool, make it typed-safe with generics. What is sync.Pool? Before going to the typed-safe pool, for those who aren't familiar with sync.Pool, it's a Go standard library feature used to reuse objects. This can reduce the number of memory allocations,…

6 8 125 10K 71

Download Image

Phuong Le @func25

3 weeks ago

💡Golang Tip #70: Implement a context-aware sleep function. The regular time.Sleep() doesn't care about context. If you set it to pause for 5 minutes, it will pause the process for the full duration, no matter what. Even if we try to use it with a context, like in the example…

1 7 86 6K 38

Download Image

Phuong Le @func25

4 weeks ago

💡Golang Tip #69: Manage multiple goroutines with errgroup When we're dealing with a bunch of goroutines, it can be a bit hard to handle errors and make sure they all work together well. You might know sync.WaitGroup, right? But there's a package called errgroup that makes this…