stdvector

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Does the vector.resize() method calls the default elements constructors when resizing?

I am trying the following code: struct _Struct2 { void*ptr; double dval; }; struct _Struct { float fval; intival;[详细]

2023-04-04 14:17 分类：问答
How to efficiently copy a std::vector<char> to a std::string

This question is a flip开发者_运维百科 side of this How to efficiently copy a std::string into a vector[详细]

2023-04-03 23:16 分类：问答
When to use std::vector<unsigned char> vs. std::vector<char>

Which of o开发者_运维知识库ne of these is best suited for managing a character buffer that can be easily converted to std::string and passed to and used ( i.e. read / write ) in C functions[详细]

2023-04-03 12:14 分类：问答
How to resize std::vector with unique objects

I have a vector of objects. Each object has a boost::shared_ptr to a noncopyable object (a boost::signal). the object\'s default constructor creates the boost::signal object.[详细]

2023-04-01 12:43 分类：问答
conversion between std::vector and _variant_t

I need to convert between std::vector and _variant_t to avoid looping when writing/sending data into some file (database, Excel, etc.)[详细]

2023-04-01 11:51 分类：问答
Dynamically creating std::vector // creating a pointer to a vector

I am new so I more than likely missing something key. I am using std::vector to store data from a ReadFile operation.[详细]

2023-03-31 09:50 分类：问答
Using begin() and end() with a set in c++

I am trying use an iterator to go through a set and then do something with the members of that set(if there are any). The problem is that, normally this works, but sometimes, it compares the beginning[详细]

2023-03-31 09:07 分类：问答
How to store fixed length strings inside a std::vector

I want to mimic a structure: char [][40] = { \"Stack\", \"Overflow\", \"Exchange\", \"Network\" }; using a std::vector, so I can populate it at runtime and dynamically change the size of the vector[详细]

2023-03-29 08:48 分类：问答
What should be the index type when iterating over the elements of a vector? [duplicate]

This question already has answers here: Iteration over std::vector: unsigned vs signed index variable (18 answers)[详细]

2023-03-27 14:05 分类：问答
Subtraction and Intersection of two vectors of pointers in C++

I\'ve two vectors having pointers to my custom class object. The pointers in these two vectors don\'t point to the same object, but the values stored in the objects are same.[详细]

2023-03-25 08:00 分类：问答