TIL: pre-Go 1.22, closures inside for loops would share the same value for a variable.
this would output `3, 3, 3`
this would output `3, 3, 3`
![Screenshot of Go code:
var prints []func()
for i := 1; i <= 3; i++ {
prints = append(prints, func() { fmt.Println(i) })
}
for _, print := range prints {
print()
}](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:n45d7heasyttl3zjkgmcfde3/bafkreiaffjvkwf3tsflupvpioef7rymltdsfnquk75dmzylcp4zjc36ktq@jpeg)
May 23, 2025 at 7:53 AM
TIL: pre-Go 1.22, closures inside for loops would share the same value for a variable.
this would output `3, 3, 3`
this would output `3, 3, 3`
explanation:
it’s easy to make mistakes because of integer overflows.
this is the reason why len returns a signed integer,
if it were a unint, in the code snippet below, the value of i will always remain positive because i will overflow.
example from The Go Programming Language book :)
it’s easy to make mistakes because of integer overflows.
this is the reason why len returns a signed integer,
if it were a unint, in the code snippet below, the value of i will always remain positive because i will overflow.
example from The Go Programming Language book :)
![A code snippet screenshot with the code:
medals := []string{"gold", "silver", "bronze"}
for i := len(medals) - 1; i >= 0; i-- {
fmt.Println(medals[i])
}
the medals[i] will go out of bounds if the length were a unsigned int](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:n45d7heasyttl3zjkgmcfde3/bafkreigaeqzaks4uvwrxwb4xlrypl6hprozjnhmoddj66btinihw6rlaei@jpeg)
April 28, 2025 at 6:31 PM
explanation:
it’s easy to make mistakes because of integer overflows.
this is the reason why len returns a signed integer,
if it were a unint, in the code snippet below, the value of i will always remain positive because i will overflow.
example from The Go Programming Language book :)
it’s easy to make mistakes because of integer overflows.
this is the reason why len returns a signed integer,
if it were a unint, in the code snippet below, the value of i will always remain positive because i will overflow.
example from The Go Programming Language book :)
meet Freya, she’s a pet of a friend of mine 💙
April 28, 2025 at 5:54 PM
meet Freya, she’s a pet of a friend of mine 💙
Go functions can take type as a parameter and return it...
I wonder what other ways types as values can be useful in Go 👀
I wonder what other ways types as values can be useful in Go 👀
![code screenshot:
// func make(t Type, size ...int) Type
make(map[string]int)](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:n45d7heasyttl3zjkgmcfde3/bafkreidgup27ydurqlpwap7gw4w7m77zzpozxyqaujflv7fzx34ed2jbsu@jpeg)
November 18, 2024 at 1:12 PM
Go functions can take type as a parameter and return it...
I wonder what other ways types as values can be useful in Go 👀
I wonder what other ways types as values can be useful in Go 👀
here's a cat i clicked last month
November 10, 2024 at 10:27 AM
here's a cat i clicked last month
November 8, 2024 at 8:46 AM
did you move today anon? 💪🏼
November 5, 2024 at 4:52 PM
did you move today anon? 💪🏼
neat! it redirects to google translation and also tells me if I am writing a post in the wrong language
October 31, 2024 at 6:40 PM
neat! it redirects to google translation and also tells me if I am writing a post in the wrong language
uncool.
threads haven't launched yet though, let's wait 20 mins and try again
threads haven't launched yet though, let's wait 20 mins and try again
July 5, 2023 at 6:11 PM
uncool.
threads haven't launched yet though, let's wait 20 mins and try again
threads haven't launched yet though, let's wait 20 mins and try again
instagram branding, it's not black and white after all but I would have loved a new branding
my dopamines are craving novelty
my dopamines are craving novelty
July 5, 2023 at 6:09 PM
instagram branding, it's not black and white after all but I would have loved a new branding
my dopamines are craving novelty
my dopamines are craving novelty