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NOT IN vs NOT EXISTS
...are unlikely to be the ones you want anyway.
When neither Products.ProductID or [Order Details].ProductID allow NULLs the NOT IN will be treated identically to the following query.
SELECT ProductID,
ProductName
FROM Products p
WHERE NOT EXISTS (SELECT *
FROM [Order D...
Is there an easy way to add a border to the top and bottom of an Android View?
...add a black border along its top and bottom borders. I tried adding android:drawableTop and android:drawableBottom to the TextView, but that only caused the entire view to become black.
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Get list of databases from SQL Server
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To expand on what @ChrisDiver said: SELECT name FROM sys.databases is the preferred approach now, rather than dbo.sysdatabases, which has been deprecated for a decade now.
– Micah
Feb 3 '16 at 19:36
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Expanding a parent to the height of its children
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overflow:auto means that the browser should decide which value to apply. What really does the trick is overflow: overlay.
– Alba Mendez
Jul 30 '11 at 12:05
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Difference between two lists
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Using Except is exactly the right way to go. If your type overrides Equals and GetHashCode, or you're only interested in reference type equality (i.e. two references are only "equal" if they refer to the exact same object), you can just use:
var list3 = list1.Except(list2).ToList();
I...
What’s the best way to reload / refresh an iframe?
...the iframe’s src attribute to itself, but this isn’t very clean. Any ideas?
21 Answers
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How do I set the value property in AngularJS' ng-options?
... text shown (the label) in a <select> element.
Like, we need person.id in the code, but we don't want to show the id to the user; we want to show its name. Likewise, we're not interested in the person.name in the code. There comes the as keyword to label stuff. So it becomes like this:
perso...
Is there a way to iterate over a dictionary?
... this:
// To print out all key-value pairs in the NSDictionary myDict
for(id key in myDict)
NSLog(@"key=%@ value=%@", key, [myDict objectForKey:key]);
The alternate method (which you have to use if you're targeting Mac OS X pre-10.5, but you can still use on 10.5 and iPhone) is to use an NSEn...
How to add calendar events in Android?
I'm just getting up to speed on Android, and today in a project meeting someone said that Android has no native calendar app so users just use whatever calendar app they like.
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difference between collection route and member route in ruby on rails?
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A member route will require an ID, because it acts on a member. A collection route doesn't because it acts on a collection of objects. Preview is an example of a member route, because it acts on (and displays) a single object. Search is an example of a col...