Alexei Zakharov alexeiz
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| #include "interfaceptr.hpp" | |
| #include <cassert> | |
| struct Interface1 {}; | |
| struct Interface2 {}; | |
| struct Interface3 {}; | |
| struct Class1 : Interface1, Interface2 {}; | |
| struct Class2 : Interface2, Interface3 {}; |
alexeiz
/ scope_exit.cpp
Last active
December 21, 2015 01:09
Simple "scope exit" macro for C++03, which supports arbitrary actions on scope exit.
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| #include <iostream> | |
| using namespace std; | |
| #define JOIN(a, b) JOIN_(a, b) | |
| #define JOIN_(a, b) a ## b | |
| #define ARG_COUNT(...) ARG_COUNT_IMP(__VA_ARGS__, 9, 8, 7, 6, 5, 4, 3, 2, 1) | |
| #define ARG_COUNT_IMP( _1,_2,_3,_4,_5,_6,_7,_8,_9, N, ...) N |
alexeiz
/ check_badweakptr.cpp
Created
July 25, 2013 03:21
Determine the existence of a class (bad_weak_ptr) in a namespace (std).
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| #include <memory> | |
| #include <exception> | |
| #include <iostream> | |
| namespace inject | |
| { | |
| struct bad_weak_ptr : std::exception | |
| { | |
| virtual char const * what() const _GLIBCXX_USE_NOEXCEPT | |
| { |
alexeiz
/ null_stream.cpp
Created
May 5, 2013 04:37
Redirect cout to a null sink using boost::iostreams.
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| #include <boost/iostreams/stream_buffer.hpp> | |
| #include <boost/iostreams/device/null.hpp> | |
| #include <iostream> | |
| namespace io = boost::iostreams; | |
| int main() | |
| { | |
| io::stream_buffer<io::null_sink> null_buf{io::null_sink()}; | |
| std::cout.rdbuf(&null_buf); |
alexeiz
/ gcharts.html
Created
March 20, 2013 06:00
An example of using Google Chart Tools from CoffeeScript. This is a self-contained html page that displays a table and a column chart. It uses coffeescript code to prepare and display the data. The code is translated into js on the fly in the browser.
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| <html> | |
| <head> | |
| <title>CoffeeScript charts</title> | |
| <script type="text/javascript" src="https://www.google.com/jsapi"></script> | |
| <script type="text/javascript"> | |
| google.load("visualization", "1", {packages:["corechart"]}); | |
| google.load("visualization", "1", {packages:["table"]}); | |
| </script> |
alexeiz
/ htop-solarized-patch.diff
Created
January 28, 2013 17:19
Patch for the default color scheme for htop that works well with the solarized terminal color theme.
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| diff -u -r a/CRT.c b/CRT.c | |
| --- a/CRT.c 2012-10-19 14:59:28.000000000 -0400 | |
| +++ b/CRT.c 2013-01-28 12:08:36.812929000 -0500 | |
| @@ -562,7 +562,7 @@ | |
| CRT_colors[LED_COLOR] = ColorPair(Green,Black); | |
| CRT_colors[TASKS_RUNNING] = A_BOLD | ColorPair(Green,Black); | |
| CRT_colors[PROCESS] = A_NORMAL; | |
| - CRT_colors[PROCESS_SHADOW] = A_BOLD | ColorPair(Black,Black); | |
| + CRT_colors[PROCESS_SHADOW] = A_BOLD | ColorPair(Green,Black); | |
| CRT_colors[PROCESS_TAG] = A_BOLD | ColorPair(Yellow,Black); |
alexeiz
/ iscallable.cpp
Created
December 18, 2012 16:15
Test if a type is a callable, i.e. objects of that type can be called as functions. Also shows how to do type tests with decltype instead of sizeof.
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| #include <type_traits> | |
| template<typename F, typename ...Ts> | |
| class is_callable | |
| { | |
| template<typename G, typename ...Us> | |
| static | |
| decltype( | |
| typename std::add_pointer<decltype(std::declval<G>()(std::declval<Us>()...))>::type{}, | |
| std::true_type{}) |
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| #include <iostream> | |
| template <typename ...Funcs> | |
| struct overload_set; | |
| template <typename Head, typename ...Tail> | |
| struct overload_set<Head, Tail...> : Head, overload_set<Tail...> | |
| { | |
| overload_set(Head head, Tail... tail) | |
| : Head{head} |
alexeiz
/ output.txt
Created
October 26, 2012 21:53
Analysis of passing function parameters by-value vs by-reference in C++
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| testing: by value | |
| * lvalue | |
| lvalue: cctor | |
| lvalue: mctor | |
| * xvalue | |
| xvalue: mctor | |
| xvalue: mctor | |
| * rvalue | |
| rvalue: mctor | |
| * done |
alexeiz
/ thr-singleton.cpp
Created
August 16, 2012 16:39
Thread-safe one-time initialization in C++11
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| // C++11 has thread-safe function local statics, but this code is just | |
| // to illustrate how one would do a thread-safe one-time initialization | |
| // using atomic variables. | |
| #include <atomic> | |
| #include <thread> | |
| #include <cassert> | |
| #include <vector> | |
| using namespace std; |