Software Hardware Architecture — Feasible Speculations
JavaScript, GO, and all those youngsters are “Unicode based”. That is: source code is Unicode, strings are Unicode even variable names are Unicode. And it all just works. And. It is all in UTF-8 Unicode. Continue reading “char8_t The un-observed particle of C++20.”
Not much has changed in the WINLAND console world. Still, the following code produces no output.
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#include <string> #include <iostream> int main () { const static std::wstring doubles = L"║═╚"; const static std::wstring singles = L"│─└"; std::wcout << doubles ; } |
Unless you do spend time digging through this long post or other similar posts elsewhere. Generally doing things, Linux/Mac console developers users, have never heard of.
For example. I have never mentioned ‘u8’ (UTF-8) string literals. That is an iso C++ native way to use UTF-8 encoding of char string literals.
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#include <string> #include <iostream> int main () { // utf-8 encoded narrow string literals const char8_t doubles[] = u8"║═╚"; const char8_t singles[] = u8"│─└"; ::printf("\n\n%s\n\n%s\n\n", doubles, singles); } |
To actually make the above work, you need to do two more “things” as ever: make sure chcp 65001 is executed beforehand, on the same console (in WIN10 it *should* be the default), and of course if not already switch to the font that can show these glyphs.
Yes, to code in a truly portable fashion, I suggest using char8_t as bove. Alternatively, one can always try a bit more relaxed style:
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// both work on CLANG 8.0.1 auto & doubles = u8"║═╚"; auto * singles = u8"│─└"; ::printf("\n\n%s\n\n%s\n\n", doubles, singles); |
But be prepared to be surprised by your compiler, at least for a while until it exhibits a full C++20 conformance.
Yes, there is much more I can write about this whole issue, but I decided not to. Yet. Let’s allow the WIN team leadership to release a stable and bug-free new console subsystem first. Apparently that is “spring 2020”.
As a business leader, do keep on engaging with Enterprise Architects regularly.
You are the captain, Architect is the navigator. You say where to go, Architect says how to get there.
At least twice per year check with your Enterprise Architects, are you actually where the markets wanted you to be.
Vision and Road-map are long term navigation maps, best owned by good and forward-thinking Enterprise Architects. Don’t let something “amazing” surprise you, as it happened to NOKIA
What is that and why would I write a blog post about it?
This is the second installment of an aptly named “c++ strong duck” post. (a title is an act of deliberate sarcasm vs ‘duck typing’ ). If you haven’t before please make a slight detour to that post, for a brief introduction on strong types, as an antidote to “type punning“. Continue reading “c++ strong types holy grail”
