Term
| How do I compile a main.cpp file? What is in a main.cpp file? |
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Definition
g++ -Wall filename.cpp -o filename
./filename
int main() { return 0; } |
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Term
| 4 properties of each variable |
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Definition
| type, name , value, memory location |
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Term
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Definition
| Idea of having an "API" in .h file and "implementation" in .cpp |
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Term
| 3 things about a default constructor |
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Definition
Provided automatically
No parameter
Initialize class value to default values. |
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Term
Alias variables, example and description
int i = 7;
int &j = i;
j = 4;
i is equal to?? |
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Definition
Like having two different names for a variable.
Output: Also 4, takes value from j. |
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Term
| What does &c return (type)? |
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Definition
| A memory address of c's data. |
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Term
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Definition
| Return a pointer to a stack variable. |
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Term
| Passing by value into a function |
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Definition
*Default
*Makes a copy of the varable
*Slow |
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Term
| Passing by pointer into a function |
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Definition
*Passing memory address
* Fast(8 bytes) |
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Term
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Definition
| Not a lot copied, just an alias, fast, better version of pointer. |
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Term
Proper way to pass (best way) into a function
Fix: Cube doSomething(Cube c1) |
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Definition
const reference
Ex:
Cube doSomething(const Cube & c1); |
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Term
| Auto Copy Constructor, two things |
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Definition
Generated if we do not define a copy constructor
Copy every instance variable in the object |
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Term
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Definition
ALWAYS pass by reference
Cube(const Cube & other) {...} |
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Term
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Definition
Must have the variable intitialized
Cannot be changed. |
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Term
| Construction Initializer List |
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Definition
Initialize variables.
Add this after construcutor -
:local variable name(local varaible name), ...
Example:
Tower::Tower(const Tower & other) : cube_(other.cube_), ptr(other.ptr_), ref_(other.ref_) |
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Term
| Deep copy cube (by value, in copy constructor that has an other.cube_) |
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Definition
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Term
| Deep copy a Cube pointer ptr_ |
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Definition
| ptr_ = new Cube(*other.ptr_)); |
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Term
| Deep copy a Cube reference ref_ |
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Definition
| Add it to a constant copy constructor by using : ref_(other.ref_) |
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