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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
...baseio.com/posts/comments.json?shallow=true
– Osama Xäwãñz
Aug 12 '17 at 15:37
...
How do I check if an object has a specific property in JavaScript?
...so note that the in operator has excellent browser support IE 5.5+, Chrome 1.0+, Firefox 1.0+, Safari 3.0+ stackoverflow.com/questions/2920765/…
– Adrien Be
Oct 15 '14 at 7:42
...
Fetch frame count with ffmpeg
... lines. They can include error messages like here:
frame= 24 fps= 24 q=-1.0 size= 0kB time=1.42 bitrate= 0.3kbits/s
frame= 41 fps= 26 q=-1.0 size= 0kB time=2.41 bitrate= 0.2kbits/s
[h264 @ 0x1013000]Cannot parallelize deblocking type 1, decoding such frames in
sequential...
convert from Color to brush
... var red = (percentage > 50 ? 1 - 2 * (percentage - 50) / 100.0 : 1.0) * 255;
var green = (percentage > 50 ? 1.0 : 2 * percentage / 100.0) * 255;
var blue = 0.0;
SDColor result1 = SDColor.FromArgb((int)red, (int)green, (int)blue);
SDColor r...
Is there a reason for C#'s reuse of the variable in a foreach?
... or common, and which hasn't been revised since then?
The latter. The C# 1.0 specification actually did not say whether the loop variable was inside or outside the loop body, as it made no observable difference. When closure semantics were introduced in C# 2.0, the choice was made to put the loop ...
Role/Purpose of ContextLoaderListener in Spring?
...cherServlet.
Here is what it would look like:
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:sche...
CocoaPods - use specific pod version
...ot including 0.2 and higher
'~> 0.1' Version 0.1 and the versions up to 1.0, not including 1.0 and higher
'~> 0' Version 0 and higher, this is basically the same as not having it.
To use pod from a local machine folder path:
pod 'Alamofire', :path => '~/Documents/Alamofire'
Install p...
Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
...cout << "No Chain\t" << count << '\t' << (duration/1.0E9) << " sec \t"
<< (10000.0*size)/(duration) << " GB/s" << endl;
}
{
uint64_t c0 = 0;
uint64_t c1 = 0;
uint64_t c2 = 0;
uint64_t c3 = 0;
startP = chr...
Retrieve version from maven pom.xml in code
... console log is as follows:
de.scrum-master.stackoverflow:my-artifact:jar:1.0-SNAPSHOT
de.scrum-master.stackoverflow
my-artifact
1.0-SNAPSHOT
Update 2017-10-31: In order to answer Simon Sobisch's follow-up question I modified the example like this:
package de.scrum_master.app;
import org.apac...
Mipmap drawables for icons
...hat the image is already pre-rendered for a few specific scales (let's say 1.0, 0.5, and 0.25). Whenever the animation "crosses" the 0.5 threshold, instead of continuing to downscale the original, 1.0-sized image, it will switch to the 0.5 image and downscale it, which should provide a better result...