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What are DDL and DML?
... the transaction making points within groups
SET TRANSACTION – specify characteristics for the transaction
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How does Haskell printf work?
...t is in the types anyway.
class PrintfType r
printf :: PrintfType r => String -> r
So printf has an overloaded return type. In the trivial case, we have no extra arguments, so we need to be able to instantiate r to IO (). For this, we have the instance
instance PrintfType (IO ())
Next, i...
How to discard local commits in Git?
... worked. Discarded all local commits and reset to HEAD. Whats the use of ^ char?
– karim
Nov 22 '19 at 13:58
@karim th...
How to solve the error LNK2019: unresolved external symbol - function?
...me so I thought I might share my solution, as simple as it was:
Check the Character Set of both projects in Configuration Properties -> General -> Character Set
My UnitTest project was using the default Character Set Multi-Byte while my libs where in Unicode.
My function was using a TCHAR as...
Concrete Javascript Regex for Accented Characters (Diacritics)
I've looked on Stack Overflow ( replacing characters.. eh , how JavaScript doesn't follow the Unicode standard concerning RegExp , etc.) and haven't really found a concrete answer to the question:
...
What's the difference between a single precision and double precision floating point operation?
...s 32 bits, its double-precision counterpart will be 64 bits long.
The extra bits increase not only the precision but also the range of magnitudes that can be represented.
The exact amount by which the precision and range of magnitudes are increased depends on what format the program is using ...
The necessity of hiding the salt for a hash
..." is that it makes cracking more difficult, but it doesn't try to hide the extra data. If you are trying to get more security by making the salt "secret", then you really just want more bits in your encryption keys.
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What is the most accurate way to retrieve a user's correct IP address in PHP?
...
We use:
/**
* Get the customer's IP address.
*
* @return string
*/
public function getIpAddress() {
if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
return $_SERVER['HTTP_CLIENT_IP'];
} else if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$ips = explode(',', $_SER...
Count(*) vs Count(1) - SQL Server
...ution-time work. The Compilation time work is a trivially small amount of extra work in the current implementation. There is an expansion of the * to all columns in some cases followed by a reduction back to 1 column being output due to how some of the internal operations work in binding and optim...
When do I use the PHP constant “PHP_EOL”?
...
PHP_EOL (string)
The correct 'End Of Line' symbol for this platform.
Available since PHP 4.3.10 and PHP 5.0.2
You can use this constant when you read or write text files on the server's filesystem.
Line endings do not matter in...