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Random Number Between 2 Double Numbers
...tly. Since we are initializing a new RNG with every call, if you call quick enough that the system time doesn't change between calls the RNG will get seeded with the exact same timestamp, and generate the same stream of random numbers.
...
How do I perform an IF…THEN in an SQL SELECT?
...ECT CAST(
CASE
WHEN Obsolete = 'N' or InStock = 'Y'
THEN 1
ELSE 0
END AS bit) as Saleable, *
FROM Product
You only need to do the CAST if you want the result as a Boolean value. If you are happy with an int, this wo...
Escaping single quote in PHP when inserting into MySQL [duplicate]
...l-escape-string
The reason your two queries are behaving differently is likely because you have magic_quotes_gpc turned on (which you should know is a bad idea). This means that strings gathered from $_GET, $_POST and $_COOKIES are escaped for you (i.e., "O'Brien" -> "O\'Brien").
Once you stor...
How does this program work?
...omoted to double. These are called the default argument promotions.
(Thanks Alok for finding this out.)
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Why is XOR the default way to combine hashes?
...
Greg HewgillGreg Hewgill
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Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
...
Short of closing and reopening your tty (i.e. logging off and back on, which may also terminate some of your background processes in the process) you only have one choice left:
attach to the process in question using gdb, and run:
p dup2(open("/dev/null", 0), 1)
p dup2(open("/dev/null"...
What is C# analog of C++ std::pair?
...ello", 4);
In previous versions you can use System.Collections.Generic.KeyValuePair<K, V> or a solution like the following:
public class Pair<T, U> {
public Pair() {
}
public Pair(T first, U second) {
this.First = first;
this.Second = second;
}
...
What are best practices for validating email addresses on iOS 2.0
...d for primitive regular expressions.
I recommend a real parser approach like MKEmailAddress.
As quick regular expressions solution see this modification of DHValidation:
- (BOOL) validateEmail: (NSString *) candidate {
NSString *emailRegex =
@"(?:[a-z0-9!#$%\\&'*+/=?\\^_`{|}~-]+(?:\\.[a...
Calculating Distance between two Latitude and Longitude GeoCoordinates
...d class libraries out there for calculating distance? I'm calculating it like this in C#:
13 Answers
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Difference between pre-increment and post-increment in a loop?
...
a++ is known as postfix.
add 1 to a, returns the old value.
++a is known as prefix.
add 1 to a, returns the new value.
C#:
string[] items = {"a","b","c","d"};
int i = 0;
foreach (string item in items)
{
Console.WriteLine(+...