c++ - Setup std::vector in class constructor - Stack Overflow
Jul 10, 2012 · rm ./class_vector; g++ class_vector.cpp -o class_vector -std=c++17; ./class_vector arg1 arg2 arg3 This will show you how to create a class that will give you the option to initialize …
constructor - Initializing the size of a C++ vector - Stack Overflow
After c++11, n instances of Entry will be created. This is a crucial piece of information as when using pointer classes, which also initialise the objects (maybe with new), the vector<Entry> …
How do we initialize a std::vector in a class constructor in C++?
Feb 27, 2013 · Formally, it's a non-trivial constructor which can be called with the arguments given (or a non-trivial default constructor, if no initialization is specified). Practically, however, …
c++ - Initializing a std::vector with default constructor - Stack …
Mar 14, 2011 · You can use it to construct the std::vector containing N copies of x. The default value for x is a value initialized T (if T is a class type with a default constructor then value …
c++ - Correct way to initialize std::vector data member - Stack …
If T is a class type, the default constructor is called to provide the initial value for the new object. If T is an array type, every element of the array is default-initialized. Otherwise, nothing is done. …
c++ - Initialize array or vector over constructor's initializing list ...
Oct 24, 2013 · In the initializer list you may call any constructor of the class of the member you want to initialize. Take a look at std::string and std::vector documentation and choose the …
initialize a vector to zeros C++/C++11 - Stack Overflow
Oct 28, 2012 · I know in C++11 they added the feature to initialize a variable to zero as such . double number = {}; // number = 0 int data{}; // data = 0 Is there a similar way to initialize a …
c++ - Initializing array of std::vector in constructor init list ...
Dec 7, 2017 · Usually when writing a constructor I try to initialize as many class members as possible in the member initialization list, including containers such as std::vector. class …
C++ Vector initial capacity - Stack Overflow
May 1, 2014 · The capacity of a vector cannot be controlled by the constructors - there is no applicable overload. The C++ standard doesn't give any guarantee about the capacity of a …
c++ - How do I initialize the vector I have defined in my header …
Apr 18, 2010 · The main problem is you define your constructor twice - once in the header, then again in the cpp file. Remove the one in the header and move the initialization to the cpp: …