is this a slice or an array ?

[pure fiber]

It's a slice

With a size of 2 and a cap of 2

Everything that is [] is a slice

[prisma cedar]

even with a size ? it is still a slice ?

[pure fiber]

Yes

All slices have a size

[prisma cedar]

ok i understand

var tst [1]string = [1]string{"hello"}

even this ?

[pure fiber]

That's an array

[prisma cedar]

it is a slice ?

hmmm

[pure fiber]

[x] - array
[] - slice

[prisma cedar]

but

hmmmmmm confusing

soooo

when i use the make function

to make a slice with a length

it is like i already calculated the length right ?

[pure fiber]

I don't understand

[prisma cedar]

when i do this

make([]string, 2)

2 is the length right ?

[pure fiber]

Yes

[prisma cedar]

so

when i do this

tst := []string{"hello"}

and i use the len() function

the len function will return the length right ?

[pure fiber]

Yes

[prisma cedar]

so

the length in make the same as using len() with any datatype

????

[pure fiber]

I think so? Maybe there is an exception but I can't think of one right now

[prisma cedar]

i seeeee

[pure fiber]

What's to remember is that arrays are static and can't be expanded, while slices can be appended to

[prisma cedar]

yes of course

because a slice doesn't have a size

[covert belfry]

@prisma cedar

• slices: runtime length and cap stored in the slice header
• arrays: compile-time length and cap stored in the type definition

[prisma cedar]

wait wait wait

[covert belfry]

a slice have a size, everything has a size

[prisma cedar]

slice already have the length why do we need capacity???????????

[covert belfry]

the length of the slice is set at runtime and is not part of the type

[covert belfry]

that so append can be O(1)

[prisma cedar]

what is O(1) ????

[covert belfry]

wikipedia, google, youtube, chatgpt, ... are all able to explain you this

[prisma cedar]

fine

[prisma cedar]

can i ask you one question ?????

[covert belfry]

see this https://www.youtube.com/watch?v=algDLvbl1YY

[covert belfry]

I have no clue, just ask your question

[prisma cedar]

why did you name yourself young corruptor ?????

[glad cloud]

[marble karma]

slices use an array under the hood.
the capacity is the size of that hidden array, and the size is how many items you are currently using.
it is like a convenient array that can automatically grow

[wide rover]

The capacity of a slice is the size of the underlying array.
The length of a slice is how much of the underlying array you're using.