Suppose I have a class with private memebers ptr, name, pname, rname, crname and age. What happens if I don’t initialize them myself? Here is an example: class Example { private: int *ptr; string name; string *pname; string &rname; const string &crname; int age; public: Example() {} }; And then I do: int main() { … Read more
Does the default constructor (created by the compiler) initialize built-in-types? 7 Answers 7
I’m just beginning to get into C++ and I want to pick up some good habits. If I have just allocated an array of type int with the new operator, how can I initialise them all to 0 without looping through them all myself? Should I just use memset? Is there a “C++” way to … Read more
How should I use array of function pointers in C? How can I initialize them? 12 Answers 12
What do the following phrases mean in C++: zero-initialization, default-initialization, and value-initialization What should a C++ developer know about them? 2 Answers 2
This question already has answers here: What is the best way to give a C# auto-property an initial value? (23 answers) Closed 7 years ago. I’m used to writing classes like this: public class foo { private string mBar = “bar”; public string Bar { get { return mBar; } set { mBar = value; … Read more
Code like this often happens: l = [] while foo: # baz l.append(bar) # qux This is really slow if you’re about to append thousands of elements to your list, as the list will have to be constantly resized to fit the new elements. In Java, you can create an ArrayList with an initial capacity. … Read more
There are multiple answers/techniques to the below question: How to set default values to golang structs? How to initialize structs in golang I have a couple of answers but further discussion is required. 10 Answers 10
I get an error on line 6 (initialize my_foo to foo_init) of the following program and I’m not sure I understand why. typedef struct foo_t { int a, b, c; } foo_t; const foo_t foo_init = { 1, 2, 3 }; foo_t my_foo = foo_init; int main() { return 0; } Keep in mind this … Read more
I have a Swift framework that defines a struct: public struct CollectionTO { var index: Order var title: String var description: String } However, I can’t seem to use the implicit memberwise initialiser from another project that imports the library. The error is: ‘CollectionTO’ cannot be initialised because it has no accessible initialisers i.e. the … Read more
