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Small, practical examples. Search by task or narrow things down below.

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PythonFunctions & error handling

Handle an expected child-process failure

Python: Catch CalledProcessError when check=True reports a nonzero exit status.

Python✓ Tested
Bash ScriptsFunctions & arguments

Handle an expected command failure

Branch on a command’s exit code without aborting the script.

exit status✓ Tested
PowerShellGetting Started

Handle an expected terminating error

PowerShell: Handle an expected terminating error using PowerShell 7.

PowerShell✓ Tested
RustGetting Started

Handle an optional value

Handle an optional value in a complete Rust program using the standard library.

Rust✓ Tested
jQueryHTTP requests

Handle an unsuccessful HTTP status

jQuery: fail receives the jqXHR object and exposes its status.

jQuery✓ Tested
jQueryEvents

Handle dynamically added buttons

Delegate a jQuery event from a stable parent to later children.

jQuery✓ Tested
Arduino / CSerial protocols

Handle incomplete serial input

Arduino / C: The returned byte count distinguishes a complete payload from a timed-out partial one.

Arduino / C✓ Tested
RustErrors & optional values

Handle integer overflow without panicking

Handle integer overflow without panicking in a complete Rust program using the standard library.

Rust✓ Tested
PythonStructured data & serialization

Handle malformed JSON input

Python: Catch JSONDecodeError without hiding unrelated programming errors.

Python✓ Tested
PythonGetting Started

Handle three possible outcomes

Python: Check high, normal and low values with an ordered conditional chain.

Python✓ Tested
JavaGetting Started

Handle three possible outcomes

Java: Check high, normal and low values with an ordered conditional chain.

Java✓ Tested
TypeScriptGetting Started

Handle three possible outcomes

TypeScript: Check high, normal and low values with an ordered conditional chain.

TypeScript✓ Tested