Code snippets are templates that make it easier to autocomplete repeating code patterns. They're like shortcuts for writing code.
Just install this package from the Extension Marketplace, then add "editor.snippetSuggestions": "top" to your user settings to see these snippets on top in the suggestion popover. Make sure you've also set "editor.tabCompletion": "on" for tab completion.
These snippets are optimized to be short and easy to remember.
They also support tab autocompletion to accelerate your workflow!