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How do you get the magnitude of a vector in Numpy?
...ray -- say x.norm() -- but oh well).
import numpy as np
x = np.array([1,2,3,4,5])
np.linalg.norm(x)
You can also feed in an optional ord for the nth order norm you want. Say you wanted the 1-norm:
np.linalg.norm(x,ord=1)
And so on.
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How to unit test a Node.js module that requires other modules and how to mock the global require fun
...ank you sooo much!
– Sukima
Feb 5 '13 at 11:43
1
very nice @ThorstenLorenz, I'll def. be using pr...
Rails Object to hash
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301
If you are looking for only attributes, then you can get them by:
@post.attributes
Note that ...
How do I get NuGet to install/update all the packages in the packages.config?
...u can update the packages using the Manage Packages dialog.
Updates:
2013/07/10 - Updated with information about nuget restore in NuGet 2.7
2014/07/06 - Updated with information about automatic package restore in Visual Studio and brought the answer up to date with other changes to NuGet.
2014/11...
How do you create a Swift Date object?
...u can use that.
let someDateTime = Date(timeIntervalSinceReferenceDate: -123456789.0) // Feb 2, 1997, 10:26 AM
Method 2
Of course, it would be easier to use things like years, months, days and hours (rather than relative seconds) to make a Date. For this you can use DateComponents to specify the co...
Hidden features of Scala
...al regex = "(\\d+)/(\\d+)/(\\d+)".r
val regex(year, month, day) = "2010/1/13"
The second line looks confusing if you're not used to using pattern matching and extractors. Whenever you define a val or var, what comes after the keyword is not simply an identifier but rather a pattern. That's why t...
Return a value from AsyncTask in Android [duplicate]
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37
Why not call a method that handles the value?
public class MyClass extends Activity {
pri...
How to find out which JavaScript events fired?
...
ChrisChris
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App Inventor 2 KIO4_Base64 拓展，更强大的图像Base64编解码工具，解码后...
... App Inventor 2 KIO4_Base64 拓展，更强大的图像Base64编解码工具，解码后的图像可写入到文件
KIO4_Base64 拓展
Base64解码后写入图像文件
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Git diff says subproject is dirty
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273
As mentioned in Mark Longair's blog post Git Submodules Explained,
Versions 1.7.0 and later ...