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Remove an item from a dictionary when its key is unknown
... remove an item from a dictionary by value, i.e. when the item's key is unknown? Here's a simple approach:
10 Answers
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How to Delete using INNER JOIN with SQL Server?
...ring. In my setup if I delete from the 2 tables separately I don't really know anymore which rows to delete from the 2nd table so this will help :)
– Verena Haunschmid
Aug 24 '16 at 5:56
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Submitting a form on 'Enter' with jQuery?
...entire form's contents vanish, but the form isn't submitted. Does anyone know if this is a Webkit issue (Adobe AIR uses Webkit for HTML), or if I've bunged things up?
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When to Redis? When to MongoDB? [closed]
What I want is not a comparison between Redis and MongoDB. I know they are different; the performance and the API is totally different.
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Navigation bar appear over the views with new iOS7 SDK
...hod.
Note: You should be using the latest GM release of iOS 7 and Xcode 5 now since the API has changed from beta versions.
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Run a PHP file in a cron job using CPanel
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I am using this now and it works but I do not get any email notification any ideas why not? php /home/username/public_html/cron/cron.php note I had to put the following line at the top of the PHP script #! /usr/bin/php -q
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What is “rvalue reference for *this”?
...n"; }
};
int main(){
test t;
t.f(); // OK
test().f(); // OK too
}
Now, onto why @Nicol's answer is atleast partly wrong. He says:
Note that this declaration changes the type of *this.
That is wrong, *this is always an lvalue:
§5.3.1 [expr.unary.op] p1
The unary * operator performs indir...
Why is `[` better than `subset`?
...eval(expr, envir, enclos) : object 'cyl' not found
because R no longer "knows" where to find the object called 'cyl'. He also points out the truly bizarre stuff that can happen if by chance there is an object called 'cyl' in the global environment:
cyl <- 4
subscramble(mtcars, cyl == 4)
cyl &...
How to create a hash or dictionary object in JavaScript [duplicate]
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A built-in Map type is now available in JavaScript. It can be used instead of simply using Object. It is supported by current versions of all major browsers.
Maps do not support the [subscript] notation used by Objects. That syntax implicitly cast...
How do I round to the nearest 0.5?
...lso better would to use Math.Floor instead of Math.Truncate, because right now negative numbers are not corretly rounded. I prefer the accepted answer,because it is simpler and less prone to implementation errors.
– Accipitridae
Aug 25 '09 at 19:46
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