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How to get the last N records in mongodb?
... oldest to newest.
Natural Order
You can also use a Natural Order mentioned above ...
db.foo.find().sort({$natural:1});
Again, using 1 or -1 depending on the order you want.
Use .limit()
Lastly, it's good practice to add a limit when doing this sort of wide open query so you could do eith...
Getting new Twitter API consumer and secret keys
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You would also need to add your phone number to profile, if you haven't, follow this: support.twitter.com/articles/…
– Pra_A
Apr 19 '15 at 19:39
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Wait for a process to finish
...n "$@"; do
while kill -0 "$pid"; do
sleep 0.5
done
done
}
Or as a simpler oneliner for easy one time usage:
while kill -0 PIDS 2> /dev/null; do sleep 1; done;
As noted by several commentators, if you want to wait for processes that you do not have the privileg...
val() doesn't trigger change() in jQuery [duplicate]
... you want to trigger change ONLY when the value actually changed, use this one:
//This will trigger "change" event when "val(new_val)" called
//with value different than the current one
(function($){
var originalVal = $.fn.val;
$.fn.val = function(){
var prev;
if(arguments....
Lightweight Javascript DB for use in Node.js [closed]
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I'm only familiar with Mongo and Couch, but there's also one named Persistence.
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Complex CSS selector for parent of active child [duplicate]
...d to browser performance and incremental rendering issues.
And for anyone searching SO in future, this might also be referred to as an ancestor selector.
Update:
The Selectors Level 4 Spec allows you to select which part of the select is the subject:
The subject of the selector can be ex...
Repository Pattern vs DAL
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You're definitely not the one who confuses things. :-)
I think the answer to the question depends on how much of a purist you want to be.
If you want a strict DDD point of view, that will take you down one path. If you look at the repository as a p...
MVC (Laravel) where to add logic
...hip in a specific way I also want to do something else. E.g., whenever someone publishes a post I also want to save something to a table for analytics. Maybe not the best example but in general there's a lot of this "grouped" functionality.
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Simple Pivot Table to Count Unique Values
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Nice technique. I didn't know about this one. You can do the same thing with an array function =IF(SUM((A$2:A2=A2)*(B$2:B2=B2)) > 1, 0, 1) (press Ctrl-Shift-Enter when entering the formula so it acquires {} around it).
– ErikE
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How do I set cell value to Date and apply default Excel date format?
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Thanks ninja, this works for me. One comment for others who need to do this. There is a POI class named BuiltinFormats that lists out all the standard formats (not just date formats) that Excel knows. I'm sticking with one of those to use as my parameter to ...