Results for “pre”
Small, practical examples. Search by task or narrow things down below.
Confirm the root filesystem rejects writes
Docker / Compose: A read-only root prevents creating files outside writable mounts.
Docker / Compose✓ Tested
Convert bytes to Base64 and back
C#: Encode text to UTF-8 before converting it to a Base64 representation.
C#✓ Tested
Convert bytes to hexadecimal and back
Java: Use HexFormat for a standard-library representation of raw bytes.
Java✓ Tested
Convert epoch seconds into an instant
Java: Instant represents a UTC timeline point independent of the default timezone.
Java✓ Tested
Convert hexadecimal text to bytes
Python: Use bytes.fromhex for a readable byte representation and hex for the reverse conversion.
Python✓ Tested
Convert tab stops to spaces
Linux Commands: Use expand with a fixed tab width when preparing plain-text alignment.
Linux Commands✓ Tested
Convert Unix time to a timestamp
Interpret a seconds-since-epoch value as UTC.
unixepoch✓ Tested
Copy a file to a chosen destination
PowerShell: LiteralPath prevents wildcard characters in the source filename from being interpreted.
PowerShell✓ Tested
Copy a file to a folder
Create a backup folder if needed, then copy a file into it while preserving its modification time and permission bits.
file✓ Tested
Correct the latest unpublished commit message
Git: Amend replaces the current commit while preserving its tree when no new changes are staged.
Git✓ Tested
Count a button’s falling edge in the main loop
Arduino / C: Compare each reading with the previous state to detect transitions.
Arduino / C✓ Tested
Count a result even when it is empty or has one item
PowerShell: Wrap pipeline results in an array subexpression for consistent Count behavior.
PowerShell✓ Tested