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Rails how to run rake task
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You can run Rake tasks from your shell by running:
rake task_name
To run from from Ruby (e.g., in the Rails console or another Rake task):
Rake::Task['task_name'].invoke
To run multiple tasks in the same namespace with a single task, create t...
python plot normal distribution
...could come up with is:
import numpy as np
import matplotlib.pyplot as plt
from scipy.stats import norm
# Plot between -10 and 10 with .001 steps.
x_axis = np.arange(-10, 10, 0.001)
# Mean = 0, SD = 2.
plt.plot(x_axis, norm.pdf(x_axis,0,2))
plt.show()
Sources:
http://www.johndcook.com/distribut...
Why are nested weights bad for performance? Alternatives?
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Update: As we know the percent support library is deprecated from API level 26. ConstraintLayout is the new way to achieve the same flat xml structure.
Updated Github Project
Updated Samples:
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android....
Views vs Components in Ember.js
... when they become complex. I don't know yet how to separate the logic part from the rendering part. I regular views, you have this separation, and could put the logic into the controller, but with component, I tend to say you'll end up having a very complex, and perhaps huge mess in it. Do you know ...
How do API Keys and Secret Keys work? Would it be secure if I have to pass my API and secret keys to
...re.
Here's how it works: let's say we have a function that takes a number from zero through nine, adds three and, if the result is greater than ten, subtracts ten. So f(2) = 5, f(8) = 1, etc. Now, we can make another function, call it f', that goes backwards, by adding seven instead of three. f'(5)...
Repeat String - Javascript
...ueOf() (clears one obvious type conversion);
added if (count < 1) check from prototypejs to the top of function to exclude unnecessary actions in that case.
applied optimisation from Dennis answer (5-7% speed up)
UPD
Created a little performance-testing playground here for those who interested...
如何获取IE (控件)的所有链接（包括Frameset, iframe） - C/C++ - 清泛网 -...
...medoc 节点进行处理
}
}
iframe 跨域访问(cross frame) zz from : http://codecentrix.blogspot.com/ ... cument-returns.html
由于安全性限制, 为防止跨域脚本攻击, 当frames 跨域的时候, IHTMLWindow2::get_document 调用将返回 E_ACCESSDENIED 。
下面函数 Html...
Class JavaLaunchHelper is implemented in both. One of the two will be used. Which one is undefined [
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From what I've found online, this is a bug introduced in JDK 1.7.0_45. It appears to also be present in JDK 1.7.0_60. A bug report on Oracle's website states that, while there was a fix, it was removed before the JDK was rele...
Can I use view pager with views (not with fragments)
... Whatever you return, you just make sure that your implementation of isViewFromObject can match the two up, key to view. However, the most common implementation is to just return the view as the key as well. FragmentPageAdapter handles all the key-to-view stuff for you and thus just asks you to cre...
Android: Vertical ViewPager [closed]
...iew.getWidth() * -position);
//set Y position to swipe in from top
float yPosition = position * view.getHeight();
view.setTranslationY(yPosition);
} else { // (1,+Infinity]
// This page is way off-screen to the right.
...