Results for &#x201C;File operations &amp; integrity&#x201D;

Read the last array element

PowerShell: A negative array index counts backward from the end.

Reverse a copy while preserving the source

PowerShell: Clone the array before using Array.Reverse because Reverse mutates its argument.

Select elements by an index range

PowerShell: An index range selects the requested array positions in order.

Split an array into fixed-size batches

PowerShell: Bound the final index so the last batch can contain fewer elements.

Test whether an array contains a value

PowerShell: The contains operator compares complete items rather than matching substrings.

JavaScriptUTC date operations

Add calendar days in UTC

JavaScript: Use UTC date setters to cross month boundaries without local daylight-saving effects.

JavaScript✓ Tested

TypeScriptUTC date operations

Add calendar days in UTC

TypeScript: Use UTC date setters to cross month boundaries without local daylight-saving effects.

TypeScript✓ Tested

Bash ScriptsArray operations

Append several items to an array

Bash Scripts: Array-plus-equals adds elements without losing spaces inside a quoted item.

Bash Scripts✓ Tested

Calculate a fixed-window moving average

C: For this small window, sum each complete group and skip incomplete prefixes.

Calculate a least common multiple using a GCD

C: Divide before multiplying to reduce the risk of intermediate overflow.

Calculate a small factorial iteratively

C: Multiply a bounded sequence using an unsigned accumulator.

Calculate an average without integer division truncation

C: Accumulate into double and divide by the nonzero number of readings.