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How exactly does the “Specific Version” property of an assembly reference work in Visual Studio?
...s in Visual Studio 2010. After a few experiments with unexpected results I set out to learn as much as possible about how the property works. Even SO, it appears to me, does not have all the answers, so here is my attempt at self-answering the question:
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Foreign key constraints: When to use ON UPDATE and ON DELETE
... warning). The engine will track the changes for you, it's good.
ON UPDATE SET NULL : if you update a company_id in a row of table COMPANY the engine will set related USERs company_id to NULL (should be available in USER company_id field). I cannot see any interesting thing to do with that on an upd...
Vibrate and Sound defaults on notification
...omes in, but so far no luck. I imagine it's something to do with the way I set the defaults, but I'm unsure of how to fix it. Any thoughts?
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How do you remove all the options of a select box and then add one option and select it with jQuery?
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@nickf: I have the same problem, but I need to add a set of checkboxes rather than one on change of dropdown but my checkboxes are coming from xml. this doesn't work
– defau1t
Jan 15 '12 at 11:32
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Make fill entire screen?
...ution who also found the same problem. Both the html and body needed to be set with min-height or the gradient would not fill the body height.
I found Stephen P's comment to provide the correct answer to this.
html {
/* To make use of full height of page*/
min-height: 100%;
margin: 0;
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Remove icon/logo from action bar on android
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What I ended up doing is setting <application (...) android:logo="@android:color/transparent"> (...) in my AndroidManifest.xml and forcing useLogo for displayOptions in my style like this <item name="android:displayOptions">showHome|useLo...
MySQL: how to get the difference between two timestamps in seconds
...20 12:00:00')) diff;
+------+
| diff |
+------+
| 60 |
+------+
1 row in set (0.00 sec)
You could also use the UNIX_TIMESTAMP() function as @Amber suggested in an other answer:
SELECT UNIX_TIMESTAMP('2010-08-20 12:01:00') -
UNIX_TIMESTAMP('2010-08-20 12:00:00') diff;
+------+
| diff |
+...
How to center horizontally div inside parent div
...or a wide width, and the child div has a smaller width. The following will set the margin for the top and bottom to zero, and the sides to automatically fit. This centers the div.
div#child {
margin: 0 auto;
}
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Size of font in CSS with slash
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This actually sets two properties and is equivalent to:
font-size: 100%;
line-height: 120%;
To quote the official documentation:
The syntax of this property is based on a traditional typographical shorthand notation to set multiple ...
Setting mime type for excel document
...application/vnd.ms-excel.
Regarding the name of the document, you should set the following header in the response:
header('Content-Disposition: attachment; filename="name_of_excel_file.xls"');
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