feat: Add derivatives, incl. high-order and mixed partial, using macros #3703
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Leedehai
changed the title
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Looking at the failed screenshotter test on Safari (link) it seems like a fleeting issue in the testing infra, not the code:
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Codecov Report
@@ Coverage Diff @@
## main #3703 +/- ##
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+ Coverage 92.97% 93.04% +0.06%
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Files 91 92 +1
Lines 6765 6826 +61
Branches 1571 1586 +15
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+ Hits 6290 6351 +61
Misses 437 437
Partials 38 38
Continue to review full report at Codecov.
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Ping reviewers.. 🙂 |
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| ## Derivatives | ||
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| The syntax closely emulates popular $LaTeX$ packages that provide derivatives, | ||
| such as `physics`, `diffcoef`, and `derivative`. |
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I'd rather see this follow one spec. Or perhaps it already does, and this sentence just needs rewording? Fine to link to other packages, but which one should be considered "correct" for this PR? We don't want to implement a brand new derivative behavior. Stated another way, if someone was to copy KaTeX code over to LaTeX, which \usepackage should they include? (This will also help review this PR; I'd rather not read the documentation of three different packages, though I've already spent some time skimming them all.)
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Yes, this follows one spec. Let me reword..
| return {func, vars, totalOrders, varOrders}; | ||
| } | ||
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| const PLACEHOLDER = "\\square"; |
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Is this placeholder behavior implemented in any of the existing LaTeX packages? I didn't see it anywhere, but I may have missed it in one of them.
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No it's not implemented in any existing LaTeX package. That said, I think it's a useful improvement, so that users won't be puzzled by blankness.
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The square is a meaningful operator in many contexts and that might confuse more than it helps. I suppose if someone leaves the [options] blank they should expect that location in fact to be blank.
| "\\odv", (context) => assembleDerivativeExpr("\\textnormal{d}", context)); | ||
| defineMacro( | ||
| "\\pdv", (context) => assembleDerivativeExpr("\\partial", context)); | ||
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I think it would make more sense to move these side-effects into src/macros/derivatives.js, which would then import defineMacro from "./defineMacro".
However, we haven't decided to make a src/macros directory. Perhaps you could provide your input on #2994? What do you think of putting your code in src/functions/derivatives.js, and possibly renaming functions to commands?
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I'm very excited to see this implemented, and I can't wait to use that! Is there an estimate on the timeline to release that? |
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@visika Hi I lost access to my Linux cloud machine a while ago but I can't get Dorker (needed for tests) working properly on my mac. Would love you -- or anyone else interested -- to take over this PR. 🙂 |
Support ordinary derivatives
\odvand partial derivatives\pdv.It supports high-order mixed partial derivatives. The syntax emulates popular$\LaTeX$ packages that provide this sought-after feature.