The difference between map-set and map-merge? Almost nothing.
When I first heard that Sass 3.3 had no map-set function, I was confused. Why force me to create a map, and then merge it? That sounds like two steps to accomplish one simple task! But that’s not the case. Map-merge is a much more powerful function, and using it to set a key in an existing map is quite straight-forward. In fact, I couldn’t come up with a map-set function that shaved off more than a few keystrokes. Here’s the comparison:
// a map!
$map: (
1: hello,
2: world,
);
// a map-set function (not included with Sass)
@function map-set($map, $key, $value) {
$new: (
$key: $value,
);
@return map-merge($map, $new);
}
// the difference between map-set and map-merge: almost nothing.
$merge: map-merge(
$map,
(
2: New York,
)
);
$set: map-set($map, 2, New York);
Part 2 – Responsive Web App vs Native Mobile App vs Progressive Web App
If you have an idea for a digital product, you may be wondering if you should build a responsive web app, a native mobile app, or a progressive web app. Is one option inherently better? What are the pros and cons? This is part 2 of a three-part series unpacking…
Part 1 – Responsive Web App vs Native Mobile App vs Progressive Web App
The decision of what platform to use to build your app is quite important – affecting project scope, timeline, and budget. But understanding the differences between a responsive web app, a native mobile app, and a progressive web app – and deciding which one is right for your project …
The complexities of containment, overflow, and ‘propagation’
I spoke about Container Queries at both Smashing Conference (San Francisco) and CSS Day (Amsterdam) – where I recommended setting up a root container to replace most media queries. Since then, Temani Afif pointed out a few issues with that approach, and sent me down a rabbit hole of overlapping…