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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
...a transaction secure though? It seems it could be easily hacked to artificially increase counts. This could be bad for voting systems.
– Soviut
Apr 7 '14 at 6:10
16
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When to use cla(), clf() or close() for clearing a plot in matplotlib?
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They all do different things, since matplotlib uses a hierarchical order in which a figure window contains a figure which may consist of many axes. Additionally, there are functions from the pyplot interface and there are methods ...
How to create a video from images with FFmpeg?
...pix_fmt yuv420p out.ogg
Your images should of course be sorted alphabetically, typically as:
0001-first-thing.jpg
0002-second-thing.jpg
0003-and-third.jpg
and so on.
I would also first ensure that all images to be used have the same aspect ratio, possibly by cropping them with imagemagick or n...
What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
...ove
Marking a reference field with CascadeType.REMOVE (or CascadeType.ALL,
which includes REMOVE) indicates that remove operations should be
cascaded automatically to entity objects that are referenced by that
field (multiple entity objects can be referenced by a collection
field):
@En...
Error CS1705: “which has a higher version than referenced assembly”
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3 ideas for you to try:
Make sure that all your dlls are compiled against the same version of Common.
Check that you have project references in your solution instead of file references.
Use binding redirections in your web.config. (Originally linked version at way...
How can you undo the last git add?
...nch, some staged, some not. At some point, some foolish programmer accidentally executed:
9 Answers
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Add custom headers to WebView resource requests - android
...er for extraHeaders , but those are only applied to the initial request. All subsequent requests do not contain the headers. I have looked at all overrides in WebViewClient , but nothing allows for adding headers to resource requests - onLoadResource(WebView view, String url) . Any help would...
iPhone App Icons - Exact Radius?
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You can make four icons (as of today) for your app and they can all have a different look - not necessarily based on the 512x512 image.
corner radius for the 512x512 icon = 80 (iTunesArtwork)
corner radius for the 1024x1024 icon = 180 (iTunesArtwork Retina)
corner radius for the 57x57 i...
Using tags in the with other HTML
...ch is non contiguous? Is it supposed to generate some data structure using all the css styles on a page and use that for rendering?
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Syntax behind sorted(key=lambda: …)
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key is a function that will be called to transform the collection's items before they are compared. The parameter passed to key must be something that is callable.
The use of lambda creates an anonymous function (which is callable). In the case of sorted ...