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How to get the last N records in mongodb?
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If I understand your question, you need to sort in ascending order.
Assuming you have some id or date field called "x" you would do ...
.sort()
db.foo.find().sort({x:1});
The 1 will sort ascending (oldest to newest) and -1 will sort descending (newest to oldest.)
If you use the...
Include all files in a folder in a single bundle
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can we order the files in the directory as done here ?
– shaijut
Jan 18 '16 at 8:12
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How to install XNA game studio on Visual Studio 2012?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Is there a way to access the “previous row” value in a SELECT statement?
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SQL has no built in notion of order, so you need to order by some column for this to be meaningful. Something like this:
select t1.value - t2.value from table t1, table t2
where t1.primaryKey = t2.primaryKey - 1
If you know how to order things but not...
How to force the browser to reload cached CSS/JS files?
...it, there's no pain in figuring out which version you need to return to in order for your visitors not to re-download.
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Android, canvas: How do I clear (delete contents of) a canvas (= bitmaps), living in a surfaceView?
In order to make a simple game, I used a template that draws a canvas with bitmaps like this:
18 Answers
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What's the difference between KeyDown and KeyPress in .NET?
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From MSDN:
Key events occur in the following order:
KeyDown
KeyPress
KeyUp
Furthermore, KeyPress gives you a chance to declare the action as "handled" to prevent it from doing anything.
sh...
How do I use ROW_NUMBER()?
...f you returned Row_Number() in your main query,
SELECT ROW_NUMBER() OVER (Order by Id) AS RowNumber, Field1, Field2, Field3
FROM User
Then when you want to go 5 rows back then you can take the current row number and use the following query to determine the row with currentrow -5
SELECT us.Id
FRO...
Reset push notification settings for app
... Don't you also need to create a certificate for the new app id in order to test it?
– Tony
Jan 12 '15 at 21:40
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How to print (using cout) a number in binary form?
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#include <iostream>
#include <cmath> // in order to use pow() function
using namespace std;
string show_binary(unsigned int u, int num_of_bits);
int main()
{
cout << show_binary(128, 8) << endl; // should print 10000000
cout << show_binar...