Term
| What does RTTI stand for? |
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Definition
| runtime type identification |
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Term
| What is the purpose of RTTI? |
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Definition
| provide a standard way for a program to determine the type of object during runtime |
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Term
| What are the three components that support RTTI? |
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Definition
| dynamic_cast, typeid, type_info |
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Term
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Definition
| class hierarchy that has virtual functions |
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Term
| What does dynamic_cast do? |
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Definition
| tells whether you can safely assign the address of an object to a point of a particular type |
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Term
| What does the typeid operator let you do? |
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Definition
| determine whether two objects are the same type |
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Term
| What arguments do typeid accept? |
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Definition
| The name of a class An expression that evaluates to an object |
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Term
| what does typeid operator return? |
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Definition
| a reference to a type_info object |
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Term
| what header file is the class type_info defined in? |
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Definition
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Term
| What operators does type_info overload? |
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Definition
| == and != so you can use these operators to compare types
ex.
typeid(Magnificent) == typeid(*pg) |
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Term
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Definition
| implementation-dependent string that is typically the name of the class ex
cout << "Now processing type " << typeid(*pg).name(); |
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Term
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Definition
| Is set to 1 if end-of-file reached |
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Term
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Definition
Is set to 1 if the stream may be corrupted;
for example, there could have been a file read error |
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Term
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Definition
| Is set to 1 if an input operation failed to read the expected characters or an output operation failed to write the expected characters |
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Term
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Definition
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Term
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Definition
| returns true if the stream can be used (all bits are cleared) |
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Term
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Definition
| returns true if eofbit is set |
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Term
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Definition
| returns true if badbit is set |
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Term
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Definition
| returns true if badbit or failbit is set |
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Term
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Definition
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Term
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Definition
sets which states will cause clear() to throw an exception;
for example, if ex is eofbit, then clear() will throw an exception if eofbit is set |
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Term
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Definition
| sets the stream state to s; the default for s is 0 (goodbit); throws a basic_ios::failure exception if rdstate() & exceptions()) != 0 |
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Term
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Definition
| Calls clear(rdstate() | s). This sets stream state bits corresponding to those bits set in s; other stream state bits are left unchanged |
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