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Expand example to touch on reshape behavior #819

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Aug 13, 2025
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Expand example to touch on reshape behavior #819

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Expand example to touch on reshape behavior
alper Aug 12, 2025
927181a
Update tutorial.rs
alper Aug 12, 2025
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4 changes: 2 additions & 2 deletions site/src/tutorial.rs
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Expand Up @@ -490,8 +490,8 @@ fn TutorialArrays() -> impl IntoView {
<Editor example="↯2_3_4 ⇡24"/>
<p>"Notice there are "<code>"2"</code>" big cells, each with "<code>"3"</code>" rows of "<code>"4"</code>" elements."</p>
<p>"This expands to any number of dimensions. The elements of the last axis are always laid out horizontally. The rows of the second-to-last axis are always laid out vertically. The third-to-last axis is horizontal, the fourth-to-last is vertical, etc."</p>
<p>"We can see here that the shape "<code>"[2 3 4 5]"</code>" appears almost like a 2×3 matrix of 4×5 matrices."</p>
<Editor example="↯2_3_4_5 ⇡120"/>
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I'd like this original example to be preserved. It shows how elements are laid out in order.

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The previous example (↯2_3_4 ⇡24) also shows that I think. The only difference here is that the shape is rank 4.

But OK. How about it like this? It would keep most of the original while also illustrating cycling.

<p>"We can see here that the shape "<code>"[2 3 4 5]"</code>" appears almost like a 2×3 matrix of 4×5 matrices. Also note that reshape cycles through elements if it doesn't have enough."</p>
<Editor example="↯2_3_4_5 ⇡119"/>

<Hd id="pervasion">"Pervasion"</Hd>
<p>"Most operations that apply to scalars are what is called "<em>"pervasive"</em>" when it comes to arrays. This means that the operation automatically applies to every item in the array."</p>
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