Affective C++ @AffectiveCpp

The authoritative guide for High Quality C++! (Warning: These are all jokes.) Joined September 2018

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cts🌸 @gf_256

4 years ago

On x86, the stack grows “down” towards lower addresses. However, this is only true in the northern hemisphere due to the Coriolis effect. In Australia, the stack grows up actually. That’s because they are all looking at their monitors upside down to avoid falling off the planet.

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Affective C++ @AffectiveCpp

3 years ago

Item 79: Choosing the right data structure is critical. Is memset too slow? Consider memunordered_set instead, to avoid the red-black tree in favor of hashing. See also memmap for key/value, mempriority_queue, memstack, etc. (thanks @jfbastien) #cplusplus #cpp #affectivecpp

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Tony Van Eerd @tvaneerd

3 years ago

@david_m_stone But `unsigned const int` is not the same as `const unsigned int` nor `unsigned int const`. For east-const builds unsigned const int makes the high bit read-only. For west-const builds it makes everything *except* the high bit read-only. We rejected central due to the ambiguity.

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Affective C++ @AffectiveCpp

3 years ago

Item 77: The difference between char and wchar_t is that char is for narrow characters, and wchar_t is for wide characters. Store letters like i and j in a char, and letters like m and w in a wchar_t. (Thanks @chrisoldwood) #cplusplus #cpp #affectivecpp

Chris Oldwood @chrisoldwood

3 years ago

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Affective C++ @AffectiveCpp

4 years ago

Really cool article about C++23! kdab.com/cpp23-will-be-…

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Jonathan O'Connor @ninkibah

4 years ago

@ciura_victor Pro-tip: Commas are quicker to parse than semi-colons because there are less pixels in the character. @AffectiveCpp

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Jonathan O'Connor @ninkibah

4 years ago

@AffectiveCpp this is how the professionals structure projects.

Jake Arkinstall, PhD 🏴󠁧󠁢󠁷󠁬󠁳󠁿 @JakeArkinstall

4 years ago

@AffectiveCpp this is how the professionals structure projects.

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Download Gif

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Lynn (finally free) @chordbug

4 years ago

programming protip! when you see x >= 0, that's a handy shortcut for x = x > 0

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Affective C++ @AffectiveCpp

4 years ago

Item 76: Can't remember all the different casts? Replace them all by the more powerful unicorn_cast: template <typename T, typename U> T unicorn_cast(U&& u) { void* addr = &u; return *static_cast<T*>(addr); } (Thanks @bjorn_fahller) #cplusplus #cpp #affectivecpp

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Affective C++ @AffectiveCpp

4 years ago

Item 75: For owning pointers, use `int *variable` (star next to the variable you own), and for non-owning pointers use `int* variable` (star away from the variable) (Thanks @olafurw) #cplusplus #cpp #affectivecpp

Ólafur Waage @olafurw

4 years ago

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Affective C++ @AffectiveCpp

4 years ago

Item 74: std::vector<bool> is widely regarded as a bad idea. Instead, prefer using std::basic_string<bool>, which both behaves as an actual container, avoids proxy objects, and gives you a small vector optimization for free! (Thanks @horenmar_ctu) #cplusplus #cpp #affectivecpp

Martin Hořeňovský @horenmar_ctu

4 years ago

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Affective C++ @AffectiveCpp

4 years ago

Item 73: If you experience seemingly random crashes and bugs in your software, simply ship it with -O0 to reduce the failure rate. (Thanks @Cor3ntin) #cplusplus #cpp #affectivecpp