a[low:high:max] in Golang – A Rare Slice Trick

Re:a[low:high:max] in Golang – A Rare Slice Trick by iainmerrick on Saturday March 18, 2023 @11:28PM (#35215737)

No it’s not -- I just checked the language specification and it says:

After slicing the array a

a := [5]int{1, 2, 3, 4, 5}

s := a[1:4]

the slice s has type []int, length 3, capacity 4

Many of us here are arguing that the default should be cap==len==3, but it’s not, it’s 4.

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Re:a[low:high:max] in Golang – A Rare Slice Trick by Groxx on Monday March 20, 2023 @12:08AM (#35227172)

Welp. TIL.

Yeah, that's much more error prone I think. It's the sort of thing that only kinda makes sense on zero-valued arrays... and even then it's dubious at best.

Bleh. I'm gonna go review some old code now D:

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