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

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HTMLAccessible structure

Expose a disclosure button’s expanded state

HTML: Keep aria-expanded synchronized with the controlled panel’s hidden state.

HTML✓ Tested
jQueryDeferred work & queues

Expose observation without exposing resolution

jQuery: promise returns an interface without resolve or reject methods.

jQuery✓ Tested
RustNumbers & durations

Express a duration in milliseconds

Express a duration in milliseconds in a complete Rust program using the standard library.

Rust✓ Tested
Bash ScriptsParameter expansion

Extract a basename without an external process

Bash Scripts: Double hash removes the longest matching prefix ending in a slash.

Bash Scripts✓ Tested
PowerShellStrings & literal text

Extract a known substring

PowerShell: Substring uses a zero-based starting index and a character count.

PowerShell✓ Tested
Bash ScriptsParameter expansion

Extract a parent path with parameter expansion

Bash Scripts: Percent removes the shortest matching slash-and-suffix portion.

Bash Scripts✓ Tested
GoHTTP & URLs

Extract a route path variable

Extract a route path variable using a complete Go program with explicit sample inputs.

Go✓ Tested
Bash ScriptsParameter expansion

Extract a substring by offset and length

Bash Scripts: Bash substring offsets start at zero for an ordinary string.

Bash Scripts✓ Tested
C++Text validation & parsing

Extract a substring with an explicit count

C++: The second substr argument is a length rather than an ending index.

C++✓ Tested
JavaScriptRegular expressions & URL encoding

Extract all regex matches with their groups

JavaScript: matchAll requires a global regular expression and returns an iterator of matches.

JavaScript✓ Tested
TypeScriptRegular expressions & URL encoding

Extract all regex matches with their groups

TypeScript: matchAll requires a global regular expression and returns an iterator of matches.

TypeScript✓ Tested
GoStrings & text

Extract digit sequences

Extract digit sequences using a complete Go program with explicit sample inputs.

Go✓ Tested