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Java 8: performance of Streams vs Collections
...
Stop using LinkedList for anything but heavy removing from the middle of the list using iterator.
Stop writing benchmarking code by hand, use JMH.
Proper benchmarks:
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@BenchmarkMode(Mode.AverageTime)
@OperationsPerInvocation(StreamVsVanilla.N)
publi...
Possible heap pollution via varargs parameter
...
When you declare
public static <T> void foo(List<T>... bar) the compiler converts it to
public static <T> void foo(List<T>[] bar) then to
public static void foo(List[] bar)
The danger then arises that you'll mistakenly assign incorrect value...
Virtual Memory Usage from Java under Linux, too much memory used
...umbers for memory. Here's what it says about the Hello World example:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2120 kgregory 20 0 4373m 15m 7152 S 0 0.2 0:00.10 java
VIRT is the virtual memory space: the sum of everything in the virtual memory map (see bel...
What is a practical use for a closure in JavaScript?
...n ( a.publicfunction() ) which calls privatefunction, which only exists inside the closure. You can NOT call privatefunction directly (i.e. a.privatefunction() ), just publicfunction().
Its a minimal example but maybe you can see uses to it? We used this to enforce public/private methods.
...
What is the Sign Off feature in Git for?
... created under an appropriate open-source license, or that it has been provided to you by someone else under those terms. This can help establish a chain of people who take responsibility for the copyright status of the code in question, to help ensure that copyrighted code not released under an app...
Intersection of two lists in Bash
... just used this in an effort to find usages of a public method error() provided by a trait, in combination with git grep, and it was awesome! I ran $ comm -12 <(git grep -il "\$this->error(" -- "*.php") <(git grep -il "Dash_Api_Json_Response" -- "*.php"), and luckily I ended up with the nam...
ComponentGroup 组件组扩展：监控内容变化和批量启用禁用组件 · App Inventor 2 中文网
... Button
按钮
Switch
开关
Slider
滑块
Spinner
下拉选择器
DatePicker
日期选择器
ContactPicker
联系人选择器
PhoneNumberPicker
电话号码选...
What are the differences between local branch, local tracking branch, remote branch and remote track
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
CSS3 Continuous Rotate Animation (Just like a loading sundial)
...icant, but to fix it, all you have to do is change 360deg to 359deg
my jsfiddle illustrates your animation:
#myImg {
-webkit-animation: rotation 2s infinite linear;
}
@-webkit-keyframes rotation {
from {-webkit-transform: rotate(0deg);}
to {-webkit-transform: rotate(359deg);}
}
A...
Android OpenGL ES and 2D
...ant to learn OpenGL ES directly since I'm targeting my development to android, however. I want to learn OpenGL ES in order to develop my 2D games. I chose it for performances purpose (since basic SurfaceView drawing isn't that efficient when it comes to RT games).
My question is: where to start?
I...