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How to get the class of the clicked element?
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"class" is not a valid variable name.
– Fred Bergman
Oct 20 '09 at 9:17
1
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How to pause a YouTube player when hiding the iframe?
I have a hidden div containing a YouTube video in an <iframe> . When the user clicks on a link, this div becomes visible, the user should then be able to play the video.
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How to get package name from anywhere?
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An idea is to have a static variable in your main activity, instantiated to be the package name. Then just reference that variable.
You will have to initialize it in the main activity's onCreate() method:
Global to the class:...
RegEx for matching UK Postcodes
...e
Performance on this regex is extremely poor. First off, they placed the least likely pattern option to match GIR 0AA at the beginning. How many users will likely have this postcode versus any other postcode; probably never? This means every time the regex is used, it must exhaust this option firs...
Rank function in MySQL
...ithout requiring a separate SET command.
Test case:
CREATE TABLE person (id int, first_name varchar(20), age int, gender char(1));
INSERT INTO person VALUES (1, 'Bob', 25, 'M');
INSERT INTO person VALUES (2, 'Jane', 20, 'F');
INSERT INTO person VALUES (3, 'Jack', 30, 'M');
INSERT INTO person VALU...
How do you overcome the HTML form nesting limitation?
...nt data to the server (possibly through a second form on the page with the ID needed to process the thing as a hidden input, or refresh the page location with the data you need passed as a GET request, or do an Ajax post to the server, or...).
This way the people without Javascript are able to use ...
How to update only one field using Entity Framework?
...dislav's answer updated to use DbContext (introduced in EF 4.1):
public void ChangePassword(int userId, string password)
{
var user = new User() { Id = userId, Password = password };
using (var db = new MyEfContextName())
{
db.Users.Attach(user);
db.Entry(user).Property(x => x.Pass...
在 App Inventor 2 中使用图像 · App Inventor 2 中文网
... development team needed to abandon support for Android 1.5 and require at least to Android 1.6 (Donut, API 4). Starting with API 4, Android is aware of different pixel densities and screen sizes. The improved screen handling makes Android application development more complicated than before because...
How to find out what group a given user has?
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This one shows the user's uid as well as all the groups (with their gids) they belong to
id userid
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How to keep Maven profiles which are activeByDefault active even if another profile gets activated?
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One trick is to avoid activeByDefault, and instead activate the profile by the absence of a property, eg:
<profiles>
<profile>
<id>firstProfile</id>
<activation>
<property>
<name&g...