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What is so bad about singletons? [closed]
...
I disagree with you. Since comments are allowed only 600 chars, I have written a Blog Post to comment on this, please see the link below. jorudolph.wordpress.com/2009/11/22/singleton-considerations
– Johannes Rudolph
Nov 22 '09 at 14:35
...
round() for float in C++
...pdf)
#include <cmath>
#include <iostream>
int main(int argc, char** argv) {
std::cout << "round(0.5):\t" << round(0.5) << std::endl;
std::cout << "round(-0.5):\t" << round(-0.5) << std::endl;
std::cout << "round(1.4):\t" << round(1....
Is Meyers' implementation of the Singleton pattern thread safe?
...ingleton& instance()
{
static bool initialized = false;
static char s[sizeof( Singleton)];
if (!initialized) {
initialized = true;
new( &s) Singleton(); // call placement new on s to construct it
}
return (*(reinterpret_cast<Singleton*>( &s)))...
App.Config Transformation for projects which are not Web Projects in Visual Studio?
... the things I need to make environment-specific are things like connection strings, appsettings and often smpt settings. The config system allows to specify these things in separate files. So you can use this in your app.config/web.config:
<appSettings configSource="appsettings.config" />
&...
Is it safe to use -1 to set all bits to true?
... on datasets of N bits by breaking it down into chunks of sizeof(unsigned)*CHAR_BIT bits each.
– MSalters
May 4 '09 at 7:22
2
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What does SynchronizationContext do?
...t, in a Winforms app:
ThreadPool.QueueUserWorkItem(delegate {
string text = File.ReadAllText(@"c:\temp\log.txt");
myTextBox.BeginInvoke(new Action(() => {
myTextBox.Text = text;
}));
});
Which has the advantage that it works when called from any thre...
App Inventor 2 接入百度网盘API · App Inventor 2 中文网
...oken=[access_token]&method=filemetas&fsids=[1737895653506]&thumb=1&dlink=1&extra=1
5、根据dlink下载 【Web客户端】
https://d.pcs.baidu.com/file/330eb0451pf47ab8514ab5b6f0095c67?fid=2584198580-250528-1737895653506&rt=pr&sign=FDtAERV-DCb740ccc5511e5e8fedcff06b081203-l1%2FQEmhrWYz44Qz...
JBoss vs Tomcat again [closed]
...Tomcat. That would be almost as lightweigth.
If you won't need any of the extras JBoss has to offer, go for the one you're most comfortable with. Which is easiest to configure and maintain for you?
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How do I print a list of “Build Settings” in Xcode project?
... project.app/Info.plist
INFOPLIST_PREPROCESS NO
INFOSTRINGS_PATH project.app/English.lproj/InfoPlist.strings
INPUT_FILE_REGION_PATH_COMPONENT
INPUT_FILE_SUFFIX .png
INSTALL_DIR "/Users/username...
Convert Rows to columns using 'Pivot' in SQL Server
...rate the week number dynamically, your code will be:
DECLARE @cols AS NVARCHAR(MAX),
@query AS NVARCHAR(MAX)
select @cols = STUFF((SELECT ',' + QUOTENAME(Week)
from yt
group by Week
order by Week
FOR XML PATH(''), TYPE
...