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Traversing sequences without writing explicit loops

The posts General Loop Statements in Modern C++ and Range-for-statement in modern C++ cover ways to write explicit loops. But explicit loops can be tedious to write and, what is more important, – harder to read, because the resulting code requires to spend the extra time by others in order to understand what is going on in the explicit loop. As alternative, the C++ standard library provides…
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Switch Statement in Modern C++

The C++ language provides the switch statement which can be used to replace the set of if statements (see If Statements in Modern C++). First of all, let’s define the enum type Traffic_light_color as follows: enum class Traffic_light_color { red, yellow, green }; Then, the following snippet: // Snippet 1 #include <stdexcept> #include <string_view> std::string_view…
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Learn About Handling Android32 Permissions In C++

Mobile android applications developed in C++ Builder requires permissions to use some part of mobile devices (sensors, camera etc..). These should be allowed by the user. an these permissions can be checked over the project options from Project > Options > Application > Uses Permissions section. Some of these permissions were listed in this document…
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Introduction to Random Number Generation in Modern C++

Every implementation of the C++ Standard Library like one included to Embarcadero RAD Studio C++ compilers provides two ways for (pseudo-)random numbers generation: old-fashioned facilities from <cstdlib> and modern facilities provided by <random>. Facilities from <cstdlib> There are two very simple functions provided by the C random library: std::srand() and std::rand().
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