Results for &#x201C;Record&#x201D;

Check for a hashtable key before reading it

PowerShell: ContainsKey distinguishes a missing key from a key whose value happens to be null.

Check whether a file is already sorted

Linux Commands: Use sort -C for a quiet status check that does not rewrite the file.

Convert an object’s properties into a hashtable

PowerShell: Enumerate PSObject.Properties when the set of property names is known only at runtime.

Count repeated lines after sorting

Linux Commands: Group identical lines before uniq -c, then normalize its leading padding.

Enumerate hashtable entries in a stable order

PowerShell: Sort entries by key when predictable output matters.

Find differences between two collections

PowerShell: Compare-Object marks reference-only values with a left arrow and difference-only values with a right arrow.

Find lines common to two sorted files

Linux Commands: Use comm -12 to suppress the two columns of unmatched lines.

Find lines unique to the first sorted file

Linux Commands: Use comm -23 to retain only records absent from the second input.

Arduino / CArrays & embedded state

Group related readings in a struct

Arduino / C: A struct keeps a sample’s fields together without dynamic allocation.

Arduino / C✓ Tested

Join two sorted files by a shared key

Linux Commands: Use join for sorted, simple delimiter-separated records with one row per key.

Merge configuration maps with override precedence

PowerShell: Copy defaults before applying override keys so the original remains unchanged.