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“is” operator behaves unexpectedly with integers
...implementation detail.
But perhaps we should be glad that there is not a new separate instance in memory every time we state a value equals 256.
>>> a = 257
>>> b = 257
>>> a is b
False # What happened here? Why is this False?
Looks like we now have two se...
Get host domain from URL?
...sing Request.Url
string host = Request.Url.Host;
Using Uri
Uri myUri = new Uri("http://www.contoso.com:8080/");
string host = myUri.Host; // host is "www.contoso.com"
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Eclipse RCP开发桌面程序 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... int returnCode = PlatformUI.createAndRunWorkbench(display, new ApplicationWorkbenchAdvisor());
5 if (returnCode == PlatformUI.RETURN_RESTART) {
6 return IPlatformRunnable.EXIT_RESTART;
7 }
8 return IPlatformRunna...
Overriding id on create in ActiveRecord
...set it. However, when setting it manually, it just works:
o = SomeObject.new
o.id = 8888
o.save!
o.reload.id # => 8888
I'm not sure what the original motivation was, but I do this when converting ActiveHash models to ActiveRecord. ActiveHash allows you to use the same belongs_to semantics in...
What is the best way to paginate results in SQL Server
...
Microsoft added a new feature to SQL 2012 that makes pagination similar to MySQL. Follow this link to learn how. It's an interesting article: dbadiaries.com/…
– Arash
Dec 20 '13 at 13:49
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How can I get zoom functionality for images?
...
UPDATE
I've just given TouchImageView a new update. It now includes Double Tap Zoom and Fling in addition to Panning and Pinch Zoom. The code below is very dated. You can check out the github project to get the latest code.
USAGE
Place TouchImageView.java in your...
jQuery event to trigger action when a div is made visible
...eturn $(this).each(function() {
var obj = $(this),
newCallback = function() {
if ($.isFunction(oldCallback)) {
oldCallback.apply(obj);
}
obj.trigger('afterShow');
};
// you can trigger a before show if you wan...
How can I access getSupportFragmentManager() in a fragment?
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This is what I use, although I'm quite new to Android development and I'm not sure if it's the correct way of doing things.
– Papipo
Feb 19 '15 at 15:37
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val() doesn't trigger change() in jQuery [duplicate]
...binding to blur to accomplish something similar: $('#mytext').focus().val('New text').blur();
– Wes Johnson
Jul 24 '14 at 15:31
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When should I use a composite index?
...automatically check that no duplicates on user_id, friend_id exists when a new record is added. This is the expected behavior as no user should have more than 1 record (relationship link) with friend_id = 2 for instance.
Without a composite PK, we can create this schema using a surrogate key:
user...