I'd like to use math equations in documentation using DDoc. What's a good way to make it look good?
Something like:
/**
* Returns x + sqrt(2).
*/
double add_sqrttwo(double x) {
return x + sqrt(2);
}
How to show math equations with DDoc?
84 views Asked by johan At
3
There are 3 answers
0
On
If you are targeting HTML, there's a few options, though none are ddoc per se: you can link to an image with the formula (<img src="...">), you can put tags around it and process later (whether a post processor in your generation step or a Javascript library on the web), or you can try to write MathML in the document https://developer.mozilla.org/en-US/docs/Web/MathML/Authoring ...
You might also try using various unicode characters like returns X + √2 but that's also pretty limited.
But all of these are working around ddoc, not with it. ddoc just can't do it on its own.
3
On
You can import MathJax, and then put the math in-between \( \) or \[ \].
An example:
/**
* Macros:
* DDOC =
* <!DOCTYPE html>
* <html lang="en-US">
* <head>
* <script type="text/javascript" async src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-MML-AM_CHTML"></script>
* <title>$(TITLE)</title>
* </head>
* <body><h1>$(TITLE)</h1>$(BODY)</body>
* </html>
*
*/
module example;
import std.math;
/**
* Jay! \( a + \sqrt{2} \)
*
* You must prefix parameter names with an underscore: \( _x + \sqrt{2} \).
*
*/
double add_sqrttwo(double x) {
return x + sqrt(2.0);
}
I'm afraid DDOC itself cannot do this. You will have to use e.g. Javascript to accomplish this or pre-generate them as images.