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);
It’s time to stop spreading this out-dated practice
Setting the box-sizing model to border-box is one of the few remaining CSS ‘resets’ used across most projects. But there are two common approaches, and the more popular choice will cause more problems than it solves.
What do all the numbers in our clamp() do?
There are multiple tools that can help create a fluid font-size calculation for CSS – generally expressed as a clamp() function combining em (or rem) with vw (or vi) units. But the results are difficult to understand at a glance, so I wanted to visualize what’s going on…
Using modern CSS units and math functions
When I tried setting my browser font-size preferences, I found it broke more sites than it improved, and I quickly moved back to the default. So what went wrong, and how can we fix it?