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Date query with ISODate in mongodb doesn't seem to work
...ch with $date like below:
db.foo.find({dt: {"$date": "2012-01-01T15:00:00.000Z"}})
you'll get error:
error: { "$err" : "invalid operator: $date", "code" : 10068 }
Try this:
db.mycollection.find({
"dt" : {"$gte": new Date("2013-10-01T00:00:00.000Z")}
})
or (following comments by @user380...
LINQ .Any VS .Exists - What's the difference?
...o evaluate both values at almost same time)
var list1 = Generate(1000000);
var forceListEval = list1.SingleOrDefault(o => o == "0123456789012");
if (forceListEval != "sdsdf")
{
var s = string.Empty;
var start2 = DateTime.Now;
if...
Do you need to use path.join in node.js?
... break UNC paths.
– user2426679
Jun 11 '17 at 7:06
This answer does not make clear why use it in typical Node.js apps....
Generate a random double in a range
...
@K_7: Say for example that there are 10,000 distinct double value between 0.0 and 1.0 (in reality there are probably more). But if the range between rangeMinand rangeMax is large, then there might be 10,000,000 distinct double values between them. The result of (ra...
How to create the most compact mapping n → isprime(n) up to a limit N?
... prime. I used python 3.6 on ubuntu 17.10; I tested with numbers up to 100.000 (you can test with bigger numbers using my code below).
This first plot compares the functions (which are explained further down in my answer), showing that the last functions do not grow as fast as the first one when in...
GCC compile error with >2 GB of code
... input. What you want to do is to calculated csc1...M, and run a loop of 1,000,000 times for different inputs and each time find s = func1 + func2 + ... + funcN. You didn't specify how fucn1...N are related to csc1...M though.
If all that is true, it seems that you should be able to turn the proble...
How to change the style of alert box?
...;
width:100%;
height:100%;
top:0px;
left:0px;
z-index:10000;
background-image:url(tp.png); /* required by MSIE to prevent actions on lower z-index elements */
}
#alertBox {
position:relative;
width:300px;
min-height:100px;
margin-top:50px;
border:1px soli...
T-SQL datetime rounded to nearest minute and nearest hours with using functions
...ateadd(hour, datediff(hour, 0, @dt), 0)
will return
2007-09-22 15:07:00.000
2007-09-22 15:00:00.000
The above just truncates the seconds and minutes, producing the results asked for in the question. As @OMG Ponies pointed out, if you want to round up/down, then you can add half a minute or hal...
Is there a rule-of-thumb for how to divide a dataset into training and validation sets?
...going to give you satisfactory variance in your estimates. If you have 100,000 instances, it doesn't really matter whether you choose an 80:20 split or a 90:10 split (indeed you may choose to use less training data if your method is particularly computationally intensive).
Assuming you have enough ...
.htaccess not working apache
...-
sudo a2enmod rewrite
Then, edit the file /etc/apache2/sites-available/000-default.conf using nano or vim using this command :-
sudo nano /etc/apache2/sites-available/000-default.conf
Then in the 000-default.conf file, add this after the line DocumentRoot /var/www/html. If your root html dire...