大约有 46,000 项符合查询结果（耗时：0.1600秒） [XML]
The data-toggle attributes in Twitter Bootstrap
...
It is a Bootstrap data attribute that automatically hooks up the element to the type of widget it is. Data-* is part of the html5 spec, and data-toggle is specific to Bootstrap.
Some Examples:
data-toggle="modal"
data-toggle="collapse"
data-toggle="dropdown"
data-toggle...
JSF backing bean structure (best practices)
...as defined in the above article by Neil Griffin:
Model Managed-Bean: Normally session scope. This type of managed-bean participates in the "Model" concern of the MVC design pattern. When you see the word "model" -- think DATA. A JSF model-bean should be a POJO that follows the JavaBean design pat...
Understanding checked vs unchecked exceptions in Java
.... these that you should explicitly catch or rethrow) should not be used at all. They were eliminated in C# for example, and most languages don't have them. So you can always throw a subclass of RuntimeException (unchecked exception)
However, I think checked exceptions are useful - they are used whe...
How do I change the android actionbar title and icon
...
This is very simple to accomplish
If you want to change it in code, call:
setTitle("My new title");
getActionBar().setIcon(R.drawable.my_icon);
And set the values to whatever you please.
Or, in the Android manifest XML file:
<activity android:name=".MyActivity"
android:icon="@d...
Reduce git repository size
... do I reduce my repo size...it's about 10 MB, but the thing is Heroku only allows 50 MB and I'm no where near finished developing my app.
...
Does MySQL ignore null values on unique constraints?
...
Yes, MySQL allows multiple NULLs in a column with a unique constraint.
CREATE TABLE table1 (x INT NULL UNIQUE);
INSERT table1 VALUES (1);
INSERT table1 VALUES (1); -- Duplicate entry '1' for key 'x'
INSERT table1 VALUES (NULL);
INSER...
Is there any difference between “!=” and “” in Oracle Sql?
...
No there is no difference at all in functionality.
(The same is true for all other DBMS - most of them support both styles):
Here is the current SQL reference: https://docs.oracle.com/database/121/SQLRF/conditions002.htm#CJAGAABC
The SQL standard only...
Internet Explorer 9 not rendering table cells properly
...umns outside the boundries of my table.
I fixed this by doing something really silly; removing all the spaces betwen the <td> start and end tags and left justifying the HTML markup pertaining to my table. Basically, you want all of your <td> </td> on the same line, no spaces.
Exa...
“Inspect” a hover element?
...
If the hover effect is given with CSS then yes, I normally use two options to get this:
One, to see the hover effect when the mouse leave the hover area:
Open the inspector in docked window and increase the width until reach your HTML element, then right click and the popup men...
Is HttpClient safe to use concurrently?
In all the examples I can find of usages of HttpClient , it is used for one off calls. But what if I have a persistent client situation, where several requests can be made concurrently? Basically, is it safe to call client.PostAsync on 2 threads at once against the same instance of HttpClient .
...