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String comparison in Python: is vs. == [duplicate]
...x==y is also
True.
Not always. NaN is a counterexample. But usually, identity (is) implies equality (==). The converse is not true: Two distinct objects can have the same value.
Also, is it generally considered better to just use '==' by default, even
when comparing int or Boolean value...
Is there a way to create your own html tag in HTML5?
...gs in browsers, although they won’t be HTML5 (see Are custom elements valid HTML5? and the HTML5 spec).
Let's assume you want to use a custom tag element called <stack>. Here's what you should do...
STEP 1
Normalize its attributes in your CSS Stylesheet (think css reset) -
Example:
sta...
How to make CSS3 rounded corners hide overflow in Chrome/Opera
...ound corners on a parent div to mask content from its childen. overflow: hidden works in simple situations, but breaks in webkit based browsers and Opera when the parent is positioned relatively or absolutely.
...
PHP Constants Containing Arrays?
... constant value:
Constants::$array[] = 'newValue';
If you don't like the idea that the array can be changed by others, a getter might help:
class Constants {
private static $array = array('guy', 'development team');
public static function getArray() {
return self::$array;
}
}
...
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
..._unicode_ci; -- COLLATE added
CALL updateProductUsers(@rUsername, @rProductID, @rPerm);
Option 2: add COLLATE to the WHERE clause:
CREATE PROCEDURE updateProductUsers(
IN rUsername VARCHAR(24),
IN rProductID INT UNSIGNED,
IN rPerm VARCHAR(16))
BEGIN
UPDATE productUsers
INN...
Counting Chars in EditText Changed Listener
...Backspace it counts up, but I need to decrement the number. How can I consider Backspace ?
5 Answers
...
Select elements by attribute in CSS
...er them with attribute selectors; and
you don't have to worry about CSS validation either, as CSS doesn't care about non-namespaced attribute names as long as they don't break the selector syntax.
share
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How to create a DataTable in C# and how to add rows?
...taTable("MyTableName"); // 2
Add column to table:
MyTable.Columns.Add("Id", typeof(int));
MyTable.Columns.Add("Name", typeof(string));
Add row to DataTable method 1:
DataRow row = MyTable.NewRow();
row["Id"] = 1;
row["Name"] = "John";
MyTable.Rows.Add(row);
Add row to DataTable method 2:
...
Determine if running on a rooted device
...refer an ability to silently check if root is available first, and if not,hide the respective options in the first place.
2...
support FragmentPagerAdapter holds reference to old fragments
...because you are instantiating and keeping references to your fragments outside of PagerAdapter.getItem, and are trying to use those references independently of the ViewPager. As Seraph says, you do have guarantees that a fragment has been instantiated/added in a ViewPager at a particular time - this...