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Reserved keywords in JavaScript
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Here is my poem, which includes all of the reserved keywords in JavaScript, and is dedicated to those who remain honest in the moment, and not just try to score:
Let this long package float,
Goto private class if short.
While protected with debugger case,...
Why does the 260 character path length limit exist in Windows?
... answered Dec 10 '09 at 11:45
vallivalli
5,07122 gold badges1717 silver badges88 bronze badges
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Run a callback only if an attribute has changed in Rails
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Rails 5.1+
class Page < ActiveRecord::Base
before_save :do_something, if: :will_save_change_to_status_id?
private
def do_something
# ...
end
end
The commit that changed ActiveRecord::Dirty is here: https://github.com/rails/rails/commit/16ae3db5a5c6a08383b974ae...
Who architected / designed C++'s IOStreams, and would it still be considered well-designed by today'
... sign of quality design.
IOStreams have a checkered history. They are actually a reworking of an earlier streams library, but were authored at a time when many of today's C++ idioms didn't exist, so the designers didn't have the benefit of hindsight. One issue that only became apparent over time wa...
AfxGetMainWnd函数解惑 - C/C++ - 清泛网 - 专注C/C++及内核技术
...时也会失灵。不信， 你测试一下下面的代码：
unsigned __stdcall SecondThreadFunc( void* pArguments )
{
CMainFrame* pMainWnd = (CMainFrame*)AfxGetMainWnd();
if (NULL!=pMainWnd)
{
CView *pView = pMainWnd->GetActiveView();
if (NULL...
CPU指令集avx程序无法运行，运行崩溃 - C/C++ - 清泛网 - 专注C/C++及内核技术
CPU指令集avx程序无法运行，运行崩溃cpu_avx_run原因就是CPU不支持相应的指令集导致的。Linux上使用 lscpu 命令查看CPU指令集，看是否支持。比如_mm256_cmpeq_epi64 这个函数需要avx2指令集，但是CPU不支持，就导致程序崩溃起不来。原因...
Using Git, how could I search for a string across all branches?
Using Git, how could I search within all files in all local branches for a given string?
5 Answers
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How do I make CMake output into a 'bin' dir?
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How to make it apply to all configurations at once?
– emlai
May 23 '15 at 21:24
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.NET 4.0 has a new GAC, why?
... Global Assembly Cache (GAC), you will have to manage each of them individually.
In .NET Framework 4.0, the GAC went through a few changes. The GAC was split into two, one for each CLR.
The CLR version used for both .NET Framework 2.0 and .NET Framework 3.5 is CLR 2.0. There was no need in the prev...
How to Remove ReadOnly Attribute on File Using PowerShell?
...e here? As for Keith's answer, he's using PSCX. Not everyone has those installed and that's not really a case of PowerShell v1 vs. v2.
– Joey
Apr 22 '11 at 9:28
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