Results for “File operations & binary data”
Small, practical examples. Search by task or narrow things down below.
Return zero for a sum over no rows
SQLite: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.
SQLite✓ Tested
Reverse slice order
Reverse slice order using a complete Go program with explicit sample inputs.
Go✓ Tested
Roll back a trial update
Group a change in a transaction and undo it.
transaction✓ Tested
Round a decimal with a chosen midpoint rule
PowerShell: Use decimal input and an explicit rounding policy for a reproducible decimal result.
PowerShell✓ Tested
Round a decimal with an explicit rule
Java: Construct BigDecimal from text to avoid importing a binary floating-point approximation.
Java✓ Tested
Round a timestamp down to its month
Group dates by a calendar boundary.
date_trunc✓ Tested
Round and format a decimal value
Round and format a decimal value in a complete Rust program using the standard library.
Rust✓ Tested
Round down to a whole minute
Round down to a whole minute using a complete Go program with explicit sample inputs.
Go✓ Tested
Run a command in a running container
Execute an additional process inside an existing container.
exec✓ Tested
Run a Compose service as a non-root user
Docker / Compose: user overrides the image’s default identity.
Docker / Compose✓ Tested
Run a Compose service as a numeric user
Docker / Compose: Run a Compose service as a numeric user in a small Compose file.
Docker / Compose✓ Tested
Run a first PowerShell statement
PowerShell: Run a first PowerShell statement using PowerShell 7.
PowerShell✓ Tested