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

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JavaScriptUTC date operations

Construct a date from Unix seconds

JavaScript: Multiply seconds by 1000 before creating a Date.

JavaScript✓ Tested
TypeScriptUTC date operations

Construct a date from Unix seconds

TypeScript: Multiply seconds by 1000 before creating a Date.

TypeScript✓ Tested
JavaScriptPromises & iteration protocols

Consume an asynchronous sequence

JavaScript: for await waits for each value of an async iterator in sequence.

JavaScript✓ Tested
TypeScriptPromises & iteration protocols

Consume an asynchronous sequence

TypeScript: for await waits for each value of an async iterator in sequence.

TypeScript✓ Tested
Bash ScriptsArguments & decisions

Consume positional arguments one at a time

Bash Scripts: Check the argument count before accessing the first parameter with nounset enabled.

Bash Scripts✓ Tested
HTMLTables & list numbering

Continue an ordered list at a chosen number

HTML: The start attribute controls the initial ordinal without changing item text.

HTML✓ Tested
CSSType & reading flow

Control tab width in preformatted content

CSS: Tab-size defines the interval of tab stops in a preformatted block.

CSS✓ Tested
CSSVisual treatment & accessibility

Control the size of a repeated background tile

CSS: Background-size sets the rendered dimensions of each repeated background image.

CSS✓ Tested
C++Tasks & synchronization

Convert a duration to another unit explicitly

C++: duration_cast converts units and truncates fractional integer units.

C++✓ Tested
PythonDates & time zones

Convert a duration to hours and minutes

Python: Use divmod to split nonnegative whole seconds into display components.

Python✓ Tested
Bash ScriptsVariables & text

Convert a string to lowercase

Normalize a text value using Bash expansion.

lowercase✓ Tested
PythonDates & time zones

Convert a Unix timestamp to aware UTC

Python: Supply timezone.utc so the result does not depend on the machine time zone.

Python✓ Tested