Error Handling & Exceptions

Djazair uses structured exception handling with try, catch, finally, and throw to gracefully handle runtime errors and guarantee resource cleanup.

Try, Catch, Finally

djazair

try
    let divisor = 0
    if divisor == 0
        throw "Division by zero is not permitted"
    end
catch err
    print("Caught error: ${err}")
finally
    print("Cleanup logic executed unconditionally")
end
# => Caught error: Division by zero is not permitted
# => Cleanup logic executed unconditionally

Nested Exceptions & Rethrowing

Exceptions propagate up the call stack until caught. You can catch an error, perform logging, and rethrow:

djazair

fn processFile(filename)
    try
        # Attempt operation
        throw "FileNotFound: ${filename}"
    catch e
        print("Log: failed to process ${filename}")
        throw e # Rethrow error to caller
    end
end

try
    processFile("config.json")
catch e
    print("Top-level handler received: ${e}")
end