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Find MongoDB records where array field is not empty
...nexpected results. For example: db.doc.find({'nums': { $gt: [] }}).hint({ _id: 1 }).count() returns the right number, while db.doc.find({'nums': { $gt: [] }}).hint({ nums: 1 }).count() returns 0.
– wojcikstefan
Mar 4 '17 at 17:51
...
How to delete images from a private docker registry?
.... I don't want to delete the entire repository, just some of the images inside it. The API docs don't mention a way to do this, but surely it's possible?
...
How do I install a custom font on an HTML site
...
I didn't know you could do that. Does it work in other browsers too?
– Julien Bourdon
Nov 1 '11 at 2:17
...
Difference between git pull and git pull --rebase
...lp if the upstream rebase involved any "squashing" (meaning that the patch-ids of the commits changed, not just their order).
Which means git pull --rebase has to do a little bit more than that. Here's an explanation of what it does and how.
Let's say your starting point is this:
a---b---c---d---e ...
Adaptive segue in storyboard Xcode 6. Is push deprecated?
...er and I use ‘show’ I get what you described in that the VC_B does a slide up from bottom. If I try to ‘push’ I get a crash since in order to do push I must have navigation controller. So it would seem that ‘show’ will do a push in the case where a navigation controller is provided and d...
Build an iOS app without owning a mac? [closed]
...evelop iOS apps you don't want to pay anything,
You just need Mac + XCode IDE
Get Mac Mini or Mac Machine
Create Developer Account on Apple its free
After login developer account you can download Xcode IDE's .dmg file
That's all.
Now you just install Xcode and start developing iOS apps and tes...
Insert/Update Many to Many Entity Framework . How do I do it?
...s a collection of Classes. Since your StudentClass table only contains the Ids and no extra information, EF does not generate an entity for the joining table. That is the correct behaviour and that's what you expect.
Now, when doing inserts or updates, try to think in terms of objects. E.g. if you ...
Why Doesn't C# Allow Static Methods to Implement an Interface?
...uming you are asking why you can't do this:
public interface IFoo {
void Bar();
}
public class Foo: IFoo {
public static void Bar() {}
}
This doesn't make sense to me, semantically. Methods specified on an interface should be there to specify the contract for interacting with an object....
What is the closest thing Windows has to fork()?
...a the shared area, and returns from
fork itself.
While we have some ideas as to how to
speed up our fork implementation by
reducing the number of context
switches between the parent and child
process, fork will almost certainly
always be inefficient under Win32.
Fortunately, in mo...
Is there a quicker / better way to clear the iPhone Simulator cache than deleting its directory?
...erflow.com/a/26394597/218152 for single device
xcrun simctl erase [device ID]
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