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Coalesce function for PHP?
... implicitly converted to a boolean. So make sure you brush up on your type casting rules
– DanMan
May 24 '14 at 11:48
...
Why exactly is eval evil?
...nic or other)
pointers
restartable exceptions
self-modifying code
...and a cast of thousands.
If you find yourself having to use any of these powerful, potentially dangerous tools ask yourself three times "why?" in a chain. For example:
"Why do I have to use eval?"
"Because of foo." "Why ...
MySQL Insert Where query
...INSERT INTO Users(weight, desiredWeight)
VALUES (160,145)
INSERT using a SELECT statement
INSERT INTO Users(weight, desiredWeight)
SELECT weight, desiredWeight
FROM AnotherTable
WHERE id = 1
share
|
...
Using an integer as a key in an associative array in JavaScript
...
Still gets cast to string.
– drew010
Apr 20 '16 at 20:00
1
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Reference alias (calculated in SELECT) in WHERE clause
The calculated value BalanceDue that is set as a variable in the list of selected columns cannot be used in the WHERE clause.
...
How to define optional methods in Swift protocol?
...xtension to disallow conforming types to customize unless you specifically cast down to its dynamicType to show you want the conformer's custom implementation.
– matthias
Oct 1 '15 at 9:54
...
Multiple select statements in Single query
...
SELECT (
SELECT COUNT(*)
FROM user_table
) AS tot_user,
(
SELECT COUNT(*)
FROM cat_table
) AS tot_cat,
(
SELECT COUNT(*)
FROM course_table
) AS tot_course
...
How to change row color in datagridview?
...
Cast them to Integer, then. :-) something like: Convert.ToInt32(dvgr.Cells[7].Value) < Convert.ToInt32(dgvr.Cells[10].Value)
– Demi
Feb 5 '10 at 2:12
...
How to pass object with NSNotificationCenter
...on: Notification){
// Important: - Grab your custom object here by casting the notification object.
guard let yourPassedObject = notification.object as? YourCustomObject else {return}
// That's it now you can use your custom object
//
//
}
// MARK: ...
SELECT DISTINCT on one column
...ou're on SQL Server 2005 or greater, you can use a CTE with ROW_NUMBER():
SELECT *
FROM (SELECT ID, SKU, Product,
ROW_NUMBER() OVER (PARTITION BY PRODUCT ORDER BY ID) AS RowNumber
FROM MyTable
WHERE SKU LIKE 'FOO%') AS a
WHERE a.RowNumber = 1
...