prefer length over size when talking about number of elements vs. bytesize

[michaelkirk]

These terms can be synonyms, so what's there isn't wrong, but length is a less loaded term.

e.g. the example:

[T; size]

might be misconstrued as:

// two float32's has a size of 8 bytes
let my_array: [float32; 8] = [1.0, 2.0]; // wrong

[rust-highfive]

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[xiaochuanyu]

I can see why size is chosen probably because that's the terminology is used in std lib docs https://doc.rust-lang.org/std/primitive.array.html.
But yea I also think that "length" is probably better.
Rust book for example also uses length: https://doc.rust-lang.org/book/ch03-02-data-types.html?highlight=array#the-array-type.

[marioidival]

@michaelkirk Thank you!