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In Firebase, is there a way to get the number of children of a node without loading all the node dat
...way to count children without loading data, but we do plan to add it.
For now, one solution would be to maintain a counter of the number of children and update it every time you add a new child. You could use a transaction to count items, like in this code tracking upvodes:
var upvotesRef = new Fi...
Getting “unixtime” in Java
...a 8 you can use
import java.time.Instant
...
long unixTimestamp = Instant.now().getEpochSecond();
Instant.now() returns an Instant that represents the current system time. With getEpochSecond() you get the epoch seconds (unix time) from the Instant.
...
What's a simple way to get a text input popup dialog box on an iPhone
... as, say, a UITableViewCell, but it should definitly do the trick as it is now standard supported in the iOS API. You will not need a private API for this.
UIAlertView * alert = [[UIAlertView alloc] initWithTitle:@"Alert" message:@"This is an example alert!" delegate:self cancelButtonTitle:@"Hide" ...
Xcode 4, Core Data Model Version - Set Current Version
... *.xcdatamodeld file that contains both *.xcdatamodel files.
Xcode should now recognize the relationships and allow you to expand the *.xcdatamodeld file in the project navigator to show both *.xcdatamodel files under the parent xcdatamodeld bundle, also showing a green checkmark next to the curren...
How can I sanitize user input with PHP?
...'s a common misconception that user input can be filtered. PHP even has a (now deprecated) "feature", called magic-quotes, that builds on this idea. It's nonsense. Forget about filtering (or cleaning, or whatever people call it).
What you should do, to avoid problems, is quite simple: whenever you ...
What's the fundamental difference between MFC and ATL?
... them yet.
[Edit embellishment: I did not work at Microsoft, so I don't know if Office was ever built on MFC, but I think the answer is no. Back in Win 3.1, Win 95 days, Office UI team would invent new controls, package them up in libraries, then the Windows and MFC teams would incorporate wrappe...
Dictionary vs Object - which is more efficient and why?
...d):
def timed(*args, **kw):
global RESULT
s = datetime.now()
RESULT = method(*args, **kw)
e = datetime.now()
sizeMb = process.memory_info().rss / 1024 / 1024
sizeMbStr = "{0:,}".format(round(sizeMb, 2))
print('Time Taken = %s, \t%s, \tSiz...
Where can I download IntelliJ IDEA Color Schemes? [closed]
...com/ where there is a large collection of themes. There are 270 themes for now and the site is growing.
P.S.: Help me and other people — do not forget to upvote when you download themes from this site!
share
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Need some clarification about beta/alpha testing on the developer console
... many users can install the app.
4. Production - This is the last release, now everybody can install your app, can give reviews, can report to google play if something bad is there. One more thing, now your app appears in play store search listing.
Now there is one more thing, open testing, closed t...
How to install a specific JDK on Mac OS X?
... says, you have to go to Apple, not Sun, for Java on the Mac. As far as I know, Apple JDK 6 is installed by default on Mac OS X 10.6 (Snow Leopard). Maybe you need to install the developer tools from your Mac OS X installation DVD (the dev tools are an optional install from the OS DVD).
See: http:/...