DaWei

Test the success of the query before you try to use the result in subsequent operations. If the query failed you won't have something you can fetch an array from. If you use the query error message you'll normally get an informative guide.

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Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code.
Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers