SomeUser questions

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• How to use ARKit on older iOS devices?
• Force Application to Wait Until WinExec Has Completed
• How to create gtk+ windows without title bar?
• What are the STL string limits?
• Is there something like .dll or .so, but cross-platform?
• How to use string indexes in c++ arrays (like php)?
• How to select sum of column in result of select?
• how do you create standalone(just one exe) application with qt?
• Can MongoDB work when size of database larger then RAM?

SomeUser answers