Results for “fold”
Small, practical examples. Search by task or narrow things down below.
Archive filenames safely with null delimiters
Linux Commands: Use find -print0 with tar --null to preserve spaces and embedded newlines in filenames.
Linux Commands✓ Tested
Assert approximate floating-point equality
Assert approximate floating-point equality in a complete Rust program using the standard library.
Rust✓ Tested
Assign a default to an empty or unset variable
Bash Scripts: The colon-equals expansion both supplies and assigns a fallback value.
Bash Scripts✓ Tested
Attach an overall count to every row
SQLite: An uncorrelated scalar subquery supplies the same aggregate to each output row.
SQLite✓ Tested
Attach behavior to a struct
Attach behavior to a struct using a complete Go program with explicit sample inputs.
Go✓ Tested
Bind a value with let
Bind a value with let in a complete Rust program using the standard library.
Rust✓ Tested
Block deletion of a referenced parent
SQLite: The default foreign-key action prevents deletion while a child still refers to the parent.
SQLite✓ Tested
Borrow local data in a scoped thread
Borrow local data in a scoped thread in a complete Rust program using the standard library.
Rust✓ Tested
Borrow text until a modification is needed
Borrow text until a modification is needed in a complete Rust program using the standard library.
Rust✓ Tested
Borrow text without transferring ownership
Borrow text without transferring ownership in a complete Rust program using the standard library.
Rust✓ Tested
Bound a command execution time
Linux Commands: Use timeout and handle status 124 as an expected time limit.
Linux Commands✓ Tested
Branch on a command’s exit status
Linux Commands: Branch on a command’s exit status using GNU/Linux commands in an empty practice directory.
Linux Commands✓ Tested