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Small, practical examples. Search by task or narrow things down below.

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Linux CommandsFiles & permissions

Rename a file with mv

Linux Commands: Rename a known file in the current directory and inspect its new contents.

Linux Commands✓ Tested
Linux CommandsGetting Started

Rename a practice file

Linux Commands: Rename a practice file using GNU/Linux commands in an empty practice directory.

Linux Commands✓ Tested
GitBranches & ancestry

Rename the current branch

Git: branch -m changes the local branch name without creating a new commit.

Git✓ Tested
ReactPerformance & rendering

Render a bounded preview of a long list

Render a bounded preview of a long list with a small React component and explicit browser behavior.

React✓ Tested
ReactLists & filtering

Render a helpful empty state

Render a helpful empty state with a small React component and explicit browser behavior.

React✓ Tested
ReactGetting Started

Render a list with stable keys

Render a list with stable keys with a small React component and explicit browser behavior.

React✓ Tested
ReactLists & filtering

Render a semantic data table

Render a semantic data table with a small React component and explicit browser behavior.

React✓ Tested
ReactGetting Started

Render an optional notice

Render an optional notice with a small React component and explicit browser behavior.

React✓ Tested
ReactGetting Started

Render nothing from an optional component

Render nothing from an optional component with a small React component and explicit browser behavior.

React✓ Tested
ReactAccessibility & events

Render untrusted-looking input as literal text

Render untrusted-looking input as literal text with a small React component and explicit browser behavior.

React✓ Tested
ReactGetting Started

Render your first React component

Render your first React component with a small React component and explicit browser behavior.

React✓ Tested
JavaScriptRegular expressions & URL encoding

Reorder captured text in a replacement

JavaScript: Use numbered replacement groups to rearrange a known two-part name.

JavaScript✓ Tested