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Example for boost shared_mutex (multiple reads/one write)?
...(This has been discussed elsewhere but the most interesting thread is here http://thread.gmane.org/gmane.comp.lib.boost.devel/214394)
However I did find an important (undocumented) difference between a thread waiting for an upgrade to a lock (ie needs to wait for all readers to release the shared l...
Configuring user and password with Git Bash
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Is there a numpy builtin to reject outliers from a list
...ee that the 90% percentile corresponds to 1.2815σ and the 95% is 1.645σ (http://vassarstats.net/tabs.html?#z)
As a simple example:
import numpy as np
# Create some random numbers
x = np.random.normal(5, 2, 1000)
# Calculate the statistics
print("Mean= ", np.mean(x))
print("Median= ", np.median...
用户界面（UI）组件 · App Inventor 2 中文网
...性更改时进行处理。
从版本 nb184a 开始，你可以指定以 http://localhost/ 开头的 首页地址 来引用 AI伴侣 和已编译应用程序中的资源。以前，应用程序需要在编译的应用程序中使用 file:///android_asset/，并在 AI伴侣 中使用 /sdcard/AppInve...
How do I invoke a Java method when given the method name as a string?
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Two versions of python on linux. how to make 2.7 the default
...for python 3.6
$ sudo apt-get install python3.6 python3.6-dev
$ sudo curl https://bootstrap.pypa.io/ez_setup.py -o - | sudo python3.6
$ sudo easy_install pip
On Success, check current version of pip:
$ pip3 -V
Output Ex:
pip 1.5.4 from /usr/lib/python3/dist-packages (python 3.6)
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How to calculate dp from pixels in android programmatically [duplicate]
...dp, for that you must use the method described here: https://stackoverflow.com/a/17880012/504611 (quoted below for convenience).
Without Context object, elegant static methods:
public static int dpToPx(int dp) {
return (int) (dp * Resources.getSystem().getDisplayMetrics().density);
}
publi...
Is there an MD5 Fixed Point where md5(x) == x?
... I used your answer as a base for this answer: security.stackexchange.com/questions/3851/…
– CesarB
Jul 25 '11 at 2:03
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How to “comment-out” (add comment) in a batch/cmd?
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The rem command is indeed for comments. It doesn't inherently update anyone after running the script. Some script authors might use it that way instead of echo, though, because by default the batch interpreter will print out each com...
Difference between viewDidLoad and viewDidAppear
...er (for instance, when a Modal View Controller is dismissed and the view becomes visible again). This is where you want to perform any layout actions or do any drawing in the UI - for example, presenting a modal view controller. However, anything you do here should be repeatable. It's best not to re...