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diff current working copy of a file with another branch's committed copy
...
Did you try with a -- in order to separate parameters from path arguments? git diff -- master:foo foo
– VonC
Feb 2 '12 at 16:13
1
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mongodb group values by multiple fields
...lf-join" with another pipeline expression, in which we can apply $limit in order to return the "top-n" results.
db.books.aggregate([
{ "$group": {
"_id": "$addr",
"count": { "$sum": 1 }
}},
{ "$sort": { "count": -1 } },
{ "$limit": 2 },
{ "$lookup": {
"from": "books",
"let"...
CALL command vs. START with /WAIT option
...option is to avoid creating another window, the empty quotes are needed in order to the command to work, see the reference below.
Note that if you don´t use the /WAIT in the start, the LongRunningTask will be executed at the same time than the remaining commands in the batch file, so it might crea...
Android OpenGL ES and 2D
...targeting my development to android, however. I want to learn OpenGL ES in order to develop my 2D games. I chose it for performances purpose (since basic SurfaceView drawing isn't that efficient when it comes to RT games).
My question is: where to start?
I've spent over a month browsing Google and...
Which parallel sorting algorithm has the best average case performance?
...al Study
Highly scalable parallel sorting
Sorting N-Elements Using Natural Order: A New Adaptive Sorting Approach
Update for 2013:
Here is the bleeding edge circa January, 2013. (Note: A few of the links are to papers at Citeseer and require registration which is free):
University lectures:
Parall...
Apache and Node.js on the Same Server
...
Instructions to run node server along apache2(v2.4.xx) server:
In order to pipe all requests on a particular URL to your Node.JS application create CUSTOM.conf file inside /etc/apache2/conf-available directory, and add following line to the created file:
ProxyPass /node http://localhost:80...
ASP.NET MVC JsonResult Date Format
...ionary, that is it takes an object and serializes to a Json dictionary. In order to make the object serialize to a string it requires a bit of hackery, see post. This particular hack will also escape the string.
public class CustomJsonResult : JsonResult
{
private const string _dateFormat = "yy...
Difference between fold and reduce?
... right visually depicted in this wiki(en.wikipedia.org/wiki/Fold_%28higher-order_function). With an identity construct, the other two 'fundamental' FP operators (filter and fmap) are also implementable with an existing `fold' first-class language construct (they're all isomorphic constructs). (cs.no...
How do I mock an autowired @Value field in Spring with Mockito?
...
You can use the magic of Spring's ReflectionTestUtils.setField in order to avoid making any modifications whatsoever to your code.
Check out this tutorial for even more information, although you probably won't need it since the method is very easy to use
UPDATE
Since the introduction of ...
Are lists thread-safe?
...thread safety. Try running the version with locks after changing the start order i.e. start t2 before t1 and you will see the same error. whenever t2 gets ahead of t1 the error will occur no matter if you use locks or not.
– Dev
Nov 8 '19 at 19:10
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