Results for “fold”
Small, practical examples. Search by task or narrow things down below.
Check whether a variable exists under nounset
Bash Scripts: The plus expansion distinguishes an unset variable without reading its missing value.
Bash Scripts✓ Tested
Check whether bytes contain valid JSON
Check whether bytes contain valid JSON using a complete Go program with explicit sample inputs.
Go✓ Tested
Check whether input is a nonnegative integer
Reject empty input and nonnumeric characters before arithmetic.
validation✓ Tested
Check whether text is valid JSON
Reject malformed input before processing it.
json_valid✓ Tested
Check whether two practice files match
Linux Commands: Check whether two practice files match using GNU/Linux commands in an empty practice directory.
Linux Commands✓ Tested
Choose a branch with if and else
Choose a branch with if and else using a complete Go program with explicit sample inputs.
Go✓ Tested
Choose among several numeric ranges
Bash Scripts: An if-elif chain evaluates branches in order and executes the first match.
Bash Scripts✓ Tested
Choose an action with case
Bash Scripts: Choose an action with case with a small standalone Bash program.
Bash Scripts✓ Tested
Choose an action with match
Choose an action with match in a complete Rust program using the standard library.
Rust✓ Tested
Choose between two script branches
Bash Scripts: Choose between two script branches with a small standalone Bash program.
Bash Scripts✓ Tested
Choose floating-point arithmetic
Choose floating-point arithmetic in a complete Rust program using the standard library.
Rust✓ Tested
Choose floating-point division
Choose floating-point division using a complete Go program with explicit sample inputs.
Go✓ Tested