The dereference prefix operator * being applied to iterator returns the lvalue reference to the element pointed by the iterator. Therefore, algorithms such as std::copy or std::transform calls copying constructors of processed elements, for example:
#include <algorithm>
#include <list>
#include <string>
#include <vector>
auto deep_copy_to_list(const…
By using bidirectional iterator or random access iterator (see Iterator Categories in C++) it’s possible to traverse the sequence in backward direction by using operator -- or by using the special adapter template class std::reverse_iterator. But why to bother with…
Conceptually, iterators are consists of five categories:
input iterator is intended to traverse sequences in the forward direction and provides the read access to the pointed sequence element;output iterator is intended to traverse sequences in the forward direction and…
Iterator abstracts the concept of pointer to the sequence in range [begin, end), and thus provides the following basic operations:
dereference to obtain the current element;movement to point the next element;comparison to determine at least the end of sequence.
Iterator to the element of the sequence in range [begin, end) is valid from the moment of initialization and until:
the moment it…
There are a lot ways to operate on files in C and C++. In C programming is enough to use FILE, fopen(), fclose() operations. In C++ FileOpen().was enough to operate before. In Modern C++ because of multiplatform operating systems, global languages and for the other benefits…
In programming, one of the most used variables is text strings, and they are sometimes really important when storing and retrieving valuable data. It is important to store your data safely in its language and localization. Most programming languages have issues when storing…
In order to compile C++ templates the compilers like Embarcadero RAD Studio C++ compilers are required to perform two stages: definition stage and instantiation stage.
The template definition stage
On this stage the following checks are performed:
static assertions and availability of names declarations (such as names of classes and functions) independent on template parameters are…
If you are on the hunt for the best C/C++ compilers available today, this article lists the top C/C++ compilers for Windows with their features. It’s very hard, in fact, to identify which C++ compiler is the best for you, as this is mostly about what you want to…
An integrated development environment (IDE) is a software application that provides a complete set of features for application development. Code is generally written in text format, and you can easily edit or modify your code using text editors like Notepad, Word, Wordpad…
There are two kinds of if statements in modern C++: runtime if and compile-time if constexpr.
Runtime if looks like:
if (condition) statement-true
if (condition) statement-true else statement-false
In both forms of above if the result of condition yields to true, then statement-true is executed. Otherwise (in the second form of above) the statement-false is…
