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What makes a keychain item unique (in iOS)?
... think (but am not sure) that the implementation of keychains under Mac OS X raises the same question with the same answer.
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What is the logic behind the “using” keyword in C++?
... shall not appear in the type-id.
Bjarne Stroustrup provides a practical example:
typedef void (*PFD)(double); // C style typedef to make `PFD` a pointer to a function returning void and accepting double
using PF = void (*)(double); // `using`-based equivalent of the typedef above
using P = [...
When do I need to use Begin / End Blocks and the Go keyword in SQL Server?
... where I need to use begin and end blocks in SQL Server?
Also, what exactly does the Go keyword do?
6 Answers
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
... compiler will sometimes initialize memory with certain patterns such as 0xCD and 0xDD . What I want to know is when and why this happens.
...
How to find Unused Amazon EC2 Security groups
...2 describe-security-groups --query 'SecurityGroups[*].GroupId' --output text | tr '\t' '\n'
Then get all security groups tied to an instance, then piped to sort then uniq:
aws ec2 describe-instances --query 'Reservations[*].Instances[*].SecurityGroups[*].GroupId' --output text | tr '\t' '\n' | sor...
How many socket connections can a web server handle?
...ve in the order of millions of simultaneous active TCP connections and by extension HTTP request(s). This tells you the maximum performance you can expect with the right platform with the right configuration.
Today, I was worried whether IIS with ASP.NET would support in the order of 100 concurrent ...
Java EE web development, where do I start and what skills do I need? [closed]
.... See also Java Platform, Enterprise Edition, History on Wikipedia.
What exactly do I need to learn?
I assume that you're already familiar with client side technologies like HTML, CSS and JS, so I won't go in detail with that. I also assume that you're already familiar with basic Java. Follow Orac...
text-overflow:ellipsis in Firefox 4? (and FF5)
The text-overflow:ellipsis; CSS property must be one of the few things that Microsoft has done right for the web.
5 Answe...
What is the exact meaning of Git Bash?
...
git bash is a shell where:
the running process is sh.exe (packaged with msysgit, as share/WinGit/Git Bash.vbs)
git is a known command
$HOME is defined
See "Fix msysGit Portable $HOME location":
On a Windows 64:
C:\Windows\SysWOW64\cmd.exe /c ""C:\Prog\Git\1.7.1\bin\sh.exe" -...
Bootstrap 3 Navbar with Logo
...want to use the Bootstrap 3 default navbar with an image logo instead of text branding. What's the proper way of doing this without causing any issues with different screen sizes? I assume this a common requirement, but I haven't yet seen a good code sample. A key requirement other than having accep...