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boost::flat_map and its performance compared to map and unordered_map
It is common knowledge in programming that memory locality improves performance a lot due to cache hits. I recently found out about boost::flat_map which is a vector based implementation of a map. It doesn't seem to be nearly as popular as your typical map / unordered_map so I haven't been able ...
CMFCTabCtrl的使用、颜色样式调整 - C/C++ - 清泛网 - 专注C/C++及内核技术
...建一个CMFCTabCtrl，并给其添加4个CEdit:
CRect rectTab;
CEdit m_wnd1;
CEdit m_wnd2;
CEdit m_wnd3;
CEdit m_wnd4;
CMFCTabCtrl m_wndTab;
m_wndTabLoc.GetWindowRect (&rectTab);
ScreenToClient (&rectTab);
m_wndTab.Create (CMFCTabCtrl::STYLE_3D, rectTab, this, 1,
CMFCTabCtrl::...
django unit tests without a db
Is there a possibility to write django unittests without setting up a db? I want to test business logic which doesn't require the db to set up. And while it is fast to setup a db, I really don't need it in some situations.
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C++11 reverse range-based for-loop
Is there a container adapter that would reverse the direction of iterators so I can iterate over a container in reverse with range-based for-loop?
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Python 2.7: Print to File
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from __future__ import print_function
But you can have the same effect without using the function, too:
print >>f1, 'This is a test'
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Match multiple cases classes in scala
... "B(" + s + ")"
}
case _ => "default"
}
}
Though I feel it would be much cleaner to factor that out into a method:
def doB(s: String) = { "B(" + s + ")" }
def matcher(l: Foo): String = {
l match {
case A() => "A"
case B(s) => doB(s)
case C(s) => doB(s)
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How do I set a cookie on HttpClient's HttpRequestMessage
...aseAddress, new Cookie("CookieName", "cookie_value"));
var result = await client.PostAsync("/test", content);
result.EnsureSuccessStatusCode();
}
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How to initialize std::vector from C-style array?
What is the cheapest way to initialize a std::vector from a C-style array?
6 Answers
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Pretty-print C++ STL containers
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This solution was inspired by Marcelo's solution, with a few changes:
#include <iostream>
#include <iterator>
#include <type_traits>
#include <vector>
#include <algorithm>
// This works similar to ostream_iterator, but doesn't print a delimiter...
How can we programmatically detect which iOS version is device running on? [duplicate]
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Best current version, without need to deal with numeric search within NSString is to define macros (See original answer: Check iPhone iOS Version)
Those macros do exist in github, see: https://github.com/carlj/CJAMacros/blob/master/CJAMacros/CJAMa...