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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...
FB OpenGraph og:image not pulling images (possibly https?)
...mage URIs using HTTP work just fine and URIs using HTTPS do not. They have now acknowledged that they are "looking into this."
Update: As of 2020, the bug is no longer visible in Facebook's ticket system. They never responded and I don't believe this behavior has changed. However, specifying HTTPS ...
Is there any way to specify a suggested filename when using data: URI?
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It does now but it wasn't always so easy. Many of these answers are from years ago. And they also work for other browsers.
– Holf
Oct 26 '13 at 10:09
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How to send a GET request from PHP?
...ng is just part of the string. There's no reason a server would ignore it. Now, obviously, file_get_contents doesn't let you make the request with custom cookies, headers, and other things that a browser would typically send, so you might not get the response you were looking for. In that case, you'...
How to integrate CSS pre-processing within Eclipse? [closed]
...OK.
This associated the file type .scss with eclipses native CSS Editor. Now we have to configure the native CSS Editor to support .scss files. To do this, follow this steps:
Part 2 - Add the .scss file type to the native CSS Editor
Go to Window > Preferences
Drill down to General > Cont...
Add a reference column migration in Rails 4
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Now, if you use the special generator syntax for migrations, Rails 4.2 will automatically create the correct migration with foreign key constraints included. rails g migration AddUserToUploads user:references produces add_ref...
Download a single folder or directory from a GitHub repo
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@hobailey Now, it can get access token to increase rate limit, and also access private repos.
– Kino
Jun 5 '16 at 1:37
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Using python's eval() vs. ast.literal_eval()?
...a situation with some code where eval() came up as a possible solution. Now I have never had
to use eval() before but, I have come across plenty of information about the potential
danger it can cause. That said, I'm very wary about using it.
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Java Enum Methods - return opposite direction enum
...ANTs.
So all you need is EnumType.ENUM_CONSTANT.methodName(arguments).
Now lets go back to problem from question. One of solutions could be
public enum Direction {
NORTH, SOUTH, EAST, WEST;
private Direction opposite;
static {
NORTH.opposite = SOUTH;
SOUTH.opposi...
Clear the entire history stack and start a new activity on Android
...hould not do that. :)
Edit:
As per @Ben Pearson's comment, for API <=10 now one can use IntentCompat class for the same. One can use IntentCompat.FLAG_ACTIVITY_CLEAR_TASK flag to clear task. So you can support pre API level 11 as well.
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