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How to serialize an object into a string
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How to calculate a logistic sigmoid function in Python?
... else:
z = exp(x)
return z / (1 + z)
Or perhaps this is more accurate:
import numpy as np
def sigmoid(x):
return math.exp(-np.logaddexp(0, -x))
Internally, it implements the same condition as above, but then uses log1p.
In general, the multinomial logistic sigmoid is:
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How to check for a valid Base64 encoded string
... didn't want to catch an exception. But, because catching an exception is more reliable, I will go ahead and post this answer.
public static bool IsBase64(this string base64String) {
// Credit: oybek https://stackoverflow.com/users/794764/oybek
if (string.IsNullOrEmpty(base64String) || b...
Sending event when AngularJS finished loading
...ng-element-ready="$emit('someEvent')">
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<div>
EDIT, even more few minutes later:
@satchmorun's answer works too, but only for the initial load. Here's a very useful SO question that describes the order things are executed including link functions, app.run, and others. So, dependin...
Where does Scala look for implicits?
... into scope
list.foldLeft(integral.zero)(_ + _)
}
Context bounds are more useful when you just need to pass them to other methods that use them. For example, the method sorted on Seq needs an implicit Ordering. To create a method reverseSort, one could write:
def reverseSort[T : Ordering](seq...
How to create materialized views in SQL Server?
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They're called indexed views in SQL Server - read these white papers for more background:
Creating an Indexed View
Improving Performance with SQL Server 2008 Indexed Views
Basically, all you need to do is:
create a regular view
create a clustered index on that view
and you're done!
The ...
C# Test if user has write access to a folder
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What is a daemon thread in Java?
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C++, variable declaration in 'if' expression
...clumsy and I think that declaring the variable before the if block is much more readable. If you really need to restrict the scope of that variable you can put an extra block around the if block. I have never used this syntax.
– Giorgio
Oct 20 '11 at 15:53
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How to Implement Custom Table View Section Headers and Footers with Storyboard
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