Stuff you should know about In- and Output with Streams

Today's post is about what you should know about Iostreams. In particular, I write about formatted and unformatted In- and Output.

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C++ Core Guidelines: Iostreams

When you interact with the outside world, the iostream library is the way to go in C++. As always you have to keep a few rules in mind. Let me show, which rules.

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C++ Core Guidelines: Rules for Strings

The C++ core guidelines use the term string as a sequence of characters. Consequently, the guidelines are about  C-strings, C++-strings, the C++17 std::string_view's, and std::byte's. 

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C++ Core Guidelines: Avoid Bounds Errors

When you access an element outside a container of the STL, the result is not so promising. You effect may be an error or undefined behaviour. Undefined behaviour means all bets are open.

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More special Friends with std::map and std::unordered_map

Modern C++ has eight associative containers, but your special friends should be std::map and std::unordered_map. Why? Let me explain it in this post.

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C++ Core Guidelines: std::array and std::vector are your Friends

In 99 % of your use-cases for a sequential container, you are totally fine with a std::array or a std::vector. What? If you don't believe me, read this post.

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C++ Core Guidelines: The Standard Library

The rules to the C++ standard library are mainly about containers, strings, and iostreams.

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C++20: More Details to Modules

 My last post gave you the introduction to modules in C++20. This post shows, how to use existing modules.

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C++20: Modules

Modules is one of the five prominent features of C++20. Modules will overcome the restrictions of header files. They promise a lot. For example, the separation of header and source files becomes as obsolete as the preprocessor. In the end, we will also have faster build times and an easier way to build packages.

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C++ Core Guidelines: The Remaining Rules to Source Files

Today, I complete the rules of the C++ core guidelines to source files. They are about header files and namespaces.

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