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Best Practices: Salting & peppering passwords?
...wn away backups, discarded servers… can lead to this situation. A lot of PHP users work on hosted servers.
– martinstoeckli
Jun 4 '13 at 20:14
2
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Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...and is much less time consuming than other compiler tasks such as register allocation, function inlining, constant folding, transformation of a switch statement into binary search, etc. Thus the benefits to be gained by allowing the compiler to optimize data structures appear to be less tangible tha...
Oracle SQL escape character (for a '&')
...GADOR,NOMBRE,URL)
values (2,'Netvibes',
'http://www.netvibes.com/subscribe.php?type=rss' || chr(38) || 'amp;url=');
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Why are Where and Select outperforming just Select?
...reating a LINQ expression is cheap. Calling delegate functions is cheap. Allocating and looping over an iterator is cheap. But it's even cheaper to not do these things. Thus, if you find that a LINQ statement is the bottleneck in your program, in my experience rewriting it without LINQ will alwa...
How can I propagate exceptions between threads?
...;
try {
std::rethrow_exception(e);
} catch (const std::bad_alloc&) {
puts("Success!");
}
}
I have no idea what I was doing wrong in 2013, but I'm sure it was my fault.]
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What is the method for converting radians to degrees?
...rads -> x*pi/180
I guess if you wanted to make a function for this [in PHP]:
function convert($type, $num) {
if ($type == "rads") {
$result = $num*180/pi();
}
if ($type == "degs") {
$result = $num*pi()/180;
}
return $result;
}
Yes, that coul...
Tuples( or arrays ) as Dictionary keys in C#
...s are value types (structs), not reference types, so they avoid the memory allocation and garbage collection costs. Also, they offer conciser and more intuitive syntax, allowing for their fields to be named if you so wish. They also implement the IEquatable<T> interface needed for the dictiona...
SSL certificate rejected trying to access GitHub over HTTPS behind firewall
...test it works by ssh-ing to gitproxy
pti@pti-laptop:~$ ssh github.com
PTY allocation request failed on channel 0
Hi ptillemans! You've successfully authenticated, but GitHub does not provide shell access.
Connection to github.com closed.
pti@pti-laptop:~$
(Note: if you never logged in to g...
Finalize vs Dispose
...uarantee that a finalizer will execute at all on any given instance.
Never allocate memory in finalizers or call virtual methods from finalizers.
Avoid synchronization and raising unhandled exceptions in the finalizers.
The execution order of finalizers is non-deterministic—in other words, you can...
How to compare 2 files fast using .NET?
...e .NET GC (because it's fundamentally optimized to keep small, short-lived allocations extremely cheap), and in fact could even be optimal when file sizes are expected to be less than 85K, because using a minimum of user code (as shown here) implies maximally delegating file performance issues to th...