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What are valid values for the id attribute in HTML?
When creating the id attributes for HTML elements, what rules are there for the value?
23 Answers
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CodeIgniter activerecord, retrieve last insert id?
Are there any options to get the last insert id of a new record in CodeIgniter?
11 Answers
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Get the Highlighted/Selected text
...such as images and form controls) with outlines and resize handles. If you call .createRange() on such a selection, you get a ControlRange rather than a TextRange, and ControlRanges have no text property.
– Tim Down
Mar 30 '11 at 15:30
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Significance of bool IsReusable in http handler interface
...n writing a http handler/module, there is an interface member to implement called - bool IsReusable .
3 Answers
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Android OnClickListener - identify a button
...public class Mtest extends Activity {
Button b1;
Button b2;
public void onCreate(Bundle savedInstanceState) {
...
b1 = (Button) findViewById(R.id.b1);
b2 = (Button) findViewById(R.id.b2);
b1.setOnClickListener(myhandler1);
b2.setOnClickListener(myhandler2);
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}
Vi...
Put buttons at bottom of screen with LinearLayout?
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You need to ensure four things:
Your outside LinearLayout has layout_height="match_parent"
Your inside LinearLayout has layout_weight="1" and layout_height="0dp"
Your TextView has layout_weight="0"
You've set the gravity properly on your inner LinearLayout: android:...
How to express a NOT IN query with ActiveRecord/Rails?
...this, if you are using Rails 4 look at the answers by Trung Lê` and VinniVidiVicci.
15 Answers
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JSON.Net Self referencing loop detected
...alse, "MethodHandle":{"Value":{"value":140716810003120}},"Attributes":150,"CallingConvention":1, "ReturnType":"System.Void, System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e", "ReturnTypeCustomAttributes":{"ParameterType":"System.Void, System.Private.CoreLib, ...
How is “=default” different from “{}” for default constructor and destructor?
...lt construct one, the compiler will generate a default constructor automatically. Same goes for copy/movement and destructing. Because the user did not provide any of these member functions, the C++11 specification considers this a "trivial" class. It therefore legal to do this, like memcpy their co...
How to find gaps in sequential numbering in mysql?
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Update
ConfexianMJS provided much better answer in terms of performance.
The (not as fast as possible) answer
Here's version that works on table of any size (not just on 100 rows):
SELECT (t1.id + 1) as gap_starts_at,
(SELECT MIN(t3.id) -...