A vector of pointers to different derived classes of the same base class
I am writing a game in C++ which has different enemy types. I have defined a base Enemy class and I also have derived classes enemy1, enemy2 etc.
Now for updating these enemies in each iteration of the game, I want to have an array: EnemyArray with its elements pointing to the existing enemies so that I can make sure to update them all with their own version of update(), etc.
A vector of pointers to different derived classes of the same base class
I am writing a game in C++ which has different enemy types. I have defined a base Enemy class and I also have derived classes enemy1, enemy2 etc.
Now for updating these enemies in each iteration of the game, I want to have an array: EnemyArray with its elements pointing to the existing enemies so that I can make sure to update them all with their own version of update(), etc.
A vector of pointers to different derived classes of the same base class
I am writing a game in C++ which has different enemy types. I have defined a base Enemy class and I also have derived classes enemy1, enemy2 etc.
Now for updating these enemies in each iteration of the game, I want to have an array: EnemyArray with its elements pointing to the existing enemies so that I can make sure to update them all with their own version of update(), etc.
A vector of pointers to different derived classes of the same base class
I am writing a game in C++ which has different enemy types. I have defined a base Enemy class and I also have derived classes enemy1, enemy2 etc.
Now for updating these enemies in each iteration of the game, I want to have an array: EnemyArray with its elements pointing to the existing enemies so that I can make sure to update them all with their own version of update(), etc.
Why is first column of list called 0th in so many languages? [duplicate]
This question already has answers here: Why are zero-based arrays the norm? (39 answers) Closed 9 years ago. If you want first element of list or array you reference it as 0 in many languages (like C or Clojure). Is there are some really good reasons why the programming languages was design this way? In […]
Why is first column of list called 0th in so many languages? [duplicate]
This question already has answers here: Why are zero-based arrays the norm? (39 answers) Closed 9 years ago. If you want first element of list or array you reference it as 0 in many languages (like C or Clojure). Is there are some really good reasons why the programming languages was design this way? In […]
Why is first column of list called 0th in so many languages? [duplicate]
This question already has answers here: Why are zero-based arrays the norm? (39 answers) Closed 9 years ago. If you want first element of list or array you reference it as 0 in many languages (like C or Clojure). Is there are some really good reasons why the programming languages was design this way? In […]
Why a hashtable? Why not just a non-hashed associative array?
I’ve been learning about using a hashtable to efficiently check for items in a list without looping through the whole thing, but there’s one thing that I don’t get:
Why a hashtable? Why not just a non-hashed associative array?
I’ve been learning about using a hashtable to efficiently check for items in a list without looping through the whole thing, but there’s one thing that I don’t get:
Why is the complexity of fetching a value from an array be O(1)?
How come the complexity of fetching a value from an array by it’s index is O(1)?