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It is beneficial when you want to define a mixin that abstracts out either wrapping a piece of code inside a media query or a non-supported browser class identify. The rulesets is usually handed to mixin so which the mixin can wrap the information, e.g.

Even though a @plugin get in touch with functions well for the majority of scenarios, there are occasions when it is advisable to load a plugin just before parsing starts.

The extend is both attached to your selector or placed into a ruleset. It seems like a pseudo-class with selector parameter optionally accompanied by the search phrase all:

Use @import (optional) to allow importing of a file only when it exists. Without the optional search phrase Less throws a FileError and stops compiling when importing a file that may not be uncovered. Released v2.three.0

A ruleset is often now assigned to some variable or handed in to some mixin and will have the entire set of Less options, e.g.

To avoid any unintentional joins, merge requires an express + or +_ flag on each be a part of pending declaration.

Nonetheless, you would need to return a proper Less node if you wanted to, say, multiply that versus other values or do other Less functions. Normally the output within your stylesheet is plain textual content (which can be fine for your applications).

The key would be the when search phrase, which introduces a guard sequence (right here with only one guard). Now if we run the following code:

Note that before v2.0.0, only variables that have been declared in the basis or existing scope had been regarded as Which only The existing file and calling files were being thought of when hunting for a variable.

In terms of no matter whether to use mixins or rulesets assigned to variables as maps, It truly is your choice. You may want to swap whole maps by re-declaring a variable assigned to your rulset. Or you may want to "merge" specific vital/worth pairs, where case mixins as maps may very well be more proper.

Mixins is usually assigned to your variable being named to be a variable simply call, or may be used for map lookup.

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Variables make your code much easier to keep up by providing you with a way to control Those people values from only one site:

See that without the &, the above case in point would result in a :hover rule (a descendant selector that matches hovered aspects inside tags) and this isn't what we typically would want With all the nested :hover.