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Illustrated guide to 50 of the most interesting JavaScript topics.

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SASS: differences between mixins, extends and placeholders

I used LESS a lot. These days I decided to try SASS and to be honest it's a better choice for CSS preprocessor. It just gives me more functionalities and better control on my code. There are few instruments for architecting your CSS logic - @mixin, @extend and placeholders. However there are differences between them and specific use cases.

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