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How to copy a collection from one database to another in MongoDB
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You could do something like:
db.<collection_name>.find().forEach(function(d){ db.getSiblingDB('<new_database>')['<collection_name>'].insert(d); });
Please note that with this, the two databases would need to share the same mongod for this to work.
Besides this, you can do a...
Getting only Month and Year from SQL DATE
...lieMatBailie
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Are +0 and -0 the same?
... Actually, this behavior models limit calculation in math. For example function 1/x has a value infinity in 0, however, it is separated if we are approaching 0 from the positive of negative side; in the former, the result is +inf, in the latter, -inf.
– Agoston Horvath
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Suppress warning messages using mysql from within Terminal, but password written in bash script
... edited Aug 4 at 7:44
coding is fun
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answered Apr 8 '14 at 9:34
David Goo...
How to detect scroll position of page using jQuery
...entDefault()
var scroll = $(this).scrollTop();
if(scroll == 0){
alert(123)
}
});
This code for chat_boxes for loading previous messages
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Cannot open include file 'afxres.h' in VC2010 Express
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123
Had the same problem . Fixed it by installing Microsoft Foundation Classes for C++.
Start
Ch...
What is the exact meaning of IFS=$'\n'?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How to convert int to QString?
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And if you want to put it into string within some text context, forget about + operator.
Simp...
Test for equality among all elements of a single vector
...ing by the mean:
# Determine if range of vector is FP 0.
zero_range <- function(x, tol = .Machine$double.eps ^ 0.5) {
if (length(x) == 1) return(TRUE)
x <- range(x) / mean(x)
isTRUE(all.equal(x[1], x[2], tolerance = tol))
}
If you were using this more seriously, you'd probably want to...
How do I declare class-level properties in Objective-C?
...c variable? E.g. only one instance for all types of Foo?
To declare class functions in Objective-C you use the + prefix instead of - so your implementation would look something like:
// Foo.h
@interface Foo {
}
+ (NSDictionary *)dictionary;
// Foo.m
+ (NSDictionary *)dictionary {
static NSDict...