Andy Maloney dc90efd504 examples : small code cleanups (#322) ...

- remove unnecessary initialization of string to ""
- use empty() instead of checking size()
- use emplace_back instead of push_back
- use nullptr instead of NULL
- remove unnecessary call to .data() on string
- use character overload of find_first_of() instead of passing a string

2022-12-23 20:18:51 +02:00

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