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CSmall algorithms & bit operations

Count set bits in an unsigned integer

C: Clearing the lowest set bit on each iteration counts only one iteration per set bit.

C✓ Tested
JavaText validation & formatting

Count Unicode code points

Java: Use codePointCount when supplementary characters should count as one rather than two UTF-16 units.

Java✓ Tested
GitTags & repository configuration

Create a lightweight tag at the current commit

Git: A lightweight tag is a direct reference without an annotation object.

Git✓ Tested
C#LINQ transformations

Create a reusable one-to-many lookup

C#: ToLookup groups values by key and returns an empty sequence for an unknown key.

C#✓ Tested
CDynamic memory & ownership

Create an independent copy of a byte buffer

C: Allocate the exact byte length and copy only after checking the result.

C✓ Tested
CBinary formats & structured parsing

Decode a 16-bit big-endian integer

C: Promote bytes to an unsigned integer type before combining shifted values.

C✓ Tested
CBinary formats & structured parsing

Decode a validated pair of hexadecimal digits

C: Convert each nibble and reject a nonhexadecimal character before combining them.

C✓ Tested
C#JSON & binary formats

Decode hexadecimal bytes

C#: FromHexString and ToHexString handle binary data without manually parsing pairs of characters.

C#✓ Tested
ReactPerformance & rendering

Defer the value used by a result panel

Defer the value used by a result panel with a small React component and explicit browser behavior.

React✓ Tested
JavaScriptPromises & iteration protocols

Delegate iteration to another iterable

JavaScript: yield-star forwards items from another iterable while retaining generator composition.

JavaScript✓ Tested
TypeScriptPromises & iteration protocols

Delegate iteration to another iterable

TypeScript: yield-star forwards items from another iterable while retaining generator composition.

TypeScript✓ Tested
jQueryForm serialization & state

Delete a cached data entry

jQuery: removeData removes the jQuery cache value for the selected key.

jQuery✓ Tested