Result micro optimizations

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With the help of cProfile, we can review possible optimizations.

Example

python -m cProfile -o benchmark.prof benchmark/time_result.py
snakeviz benchmark.prof

These micro-improvements will probably not be noticed in most use cases, but it improves the library and helps to understand and improve the library profiling.

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Current version

(venv) ➜  meiga git:(main) ✗ python benchmark/time_result.py
time when success: 591.8169169453904 ns
time when failure (no such key): 616.6854579932988 ns
time when failure (type missmatch): 653.6420419579372 ns

With result constructor optimization

(venv) ➜  meiga git:(main) ✗ python benchmark/time_result.py
time when success: 484.73962501157075 ns
time when failure (no such key): 684.1207499383017 ns
time when failure (type missmatch): 593.2172500761226 ns