Results for “fold”
Small, practical examples. Search by task or narrow things down below.
Include missing values in a not-equal filter
SQLite: Ordinary inequality does not include NULL; explicitly include it when that is the intended rule.
SQLite✓ Tested
Include zero counts for missing relationships
SQLite: Count the non-null child key after a left join so a missing relationship produces zero.
SQLite✓ Tested
Increase an integer variable
Bash Scripts: Increase an integer variable with a small standalone Bash program.
Bash Scripts✓ Tested
Increment a counter without an unexpected errexit
Bash Scripts: An assignment avoids the zero-result exit status of a standalone arithmetic post-increment.
Bash Scripts✓ Tested
Increment a stored value in the database
SQLite: An in-database arithmetic update avoids a separate application read-modify-write step.
SQLite✓ Tested
Increment an atomic counter
Increment an atomic counter using a complete Go program with explicit sample inputs.
Go✓ Tested
Initialize a resource only once
Initialize a resource only once using a complete Go program with explicit sample inputs.
Go✓ Tested
Initialize shared data once
Initialize shared data once in a complete Rust program using the standard library.
Rust✓ Tested
Insert and retrieve a map value
Insert and retrieve a map value in a complete Rust program using the standard library.
Rust✓ Tested
Insert only keys absent from a destination
SQLite: NOT EXISTS supports a set-based missing-row insert in a single-writer example.
SQLite✓ Tested
Inspect a path’s filename and extension
Inspect a path’s filename and extension in a complete Rust program using the standard library.
Rust✓ Tested
Inspect a typed conversion error
Inspect a typed conversion error using a complete Go program with explicit sample inputs.
Go✓ Tested