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extra qualification error in C++
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edited Dec 30 '13 at 13:11
answered Apr 12 '11 at 22:39
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How to reload apache configuration for a site without restarting apache
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answered Nov 25 '11 at 13:59
olly_ukolly_uk
10.2k33 gold badges3737 silver badges4545 bronze badges
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What's the $unwind operator in MongoDB?
...ad" }
],
other : { foo : 5 }
}
Notice how tags is actually an array of 3 items, in this case being "fun", "good" and "fun".
What $unwind does is allow you to peel off a document for each element and returns that resulting document.
To think of this in a classical approach, it would be the equiv...
Understand convertRect:toView:, convertRect:FromView:, convertPoint:toView: and convertPoint:fromVie
...esponds to the top left of the screen in iOS.
If you add a subview at 20,30 to this view, then a point at 0,0 in the subview corresponds to a point at 20,30 in the superview. This conversion is what those methods are doing.
Your example above is pointless (no pun intended) since it converts a po...
Persistence unit as RESOURCE_LOCAL or JTA?
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skaffmanskaffman
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LINQ Using Max() to select a single row
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233
I don't see why you are grouping here.
Try this:
var maxValue = table.Max(x => x.Status)
v...
How do I dynamically change the content in an iframe using jquery?
... with an iframe and some jquery code that changes the iframe content every 30 seconds. The content is in different webpages.
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SQL Query Where Field DOES NOT Contain $x
...LECT b FROM y);
-- predefined list
SELECT a FROM x WHERE x.b NOT IN (1, 2, 3, 6);
If you are searching a string, go for the LIKE operator (but this will be slow):
-- Finds all rows where a does not contain "text"
SELECT * FROM x WHERE x.a NOT LIKE '%text%';
If you restrict it so that the string...
How to do an INNER JOIN on multiple columns
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edited Mar 2 '10 at 21:39
answered Mar 2 '10 at 21:15
Da...