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what is the difference between 'transform' and 'fit_transform' in sklearn
...tributeError Traceback (most recent call last)
<ipython-input-13-e3b6b8ea2aff> in <module>()
----> 1 pc2.transform(X)
/usr/local/lib/python3.4/dist-packages/sklearn/decomposition/pca.py in transform(self, X, y)
714 # XXX remove scipy.sparse supp...
Test for existence of nested JavaScript object key
... simply catch the exception, or make a function to test the existence of multiple levels, something like this:
function checkNested(obj /*, level1, level2, ... levelN*/) {
var args = Array.prototype.slice.call(arguments, 1);
for (var i = 0; i < args.length; i++) {
if (!obj || !obj.hasOw...
How can I find the number of arguments of a Python function?
...g your life easier. For example, grabbing a parameter and viewing its default value is now easily performed with:
kwarg1 = params['kwarg1']
kwarg1.default # returns: None
similarly for the rest of the objects contained in parameters.
As for Python 2.x users, while inspect.getargspec isn't depr...
Haskell function composition (.) and function application ($) idioms: correct use
...ryan and I both prefer to reduce line noise. . is quieter than $. As a result, the book uses the f . g . h $ x syntax.
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Record file copy operation with Git
...sing git-mv the status shows that the file has been renamed and even if I alter some portions it still considers to be almost the same thing (which is good because it lets me follow the history of it).
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Get nodes where child node contains an attribute
... And you only told us that it didn't work, but you didn't tell us what results you did get.
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JavaScriptSerializer - JSON serialization of enum as string
... and upon serializing the object using JavaScriptSerializer , my json result contains the integer value of the enumeration rather than its string "name". Is there a way to get the enum as a string in my json without having to create a custom JavaScriptConverter ? Perhaps there's an attribute...
getting exception “IllegalStateException: Can not perform this action after onSaveInstanceState”
...ncountered so far. I had a Fragment application working perfectly for API < 11, and Force Closing on API > 11.
I really couldn't figure out what they changed inside the Activity lifecycle in the call to saveInstance, but I here is how I solved this :
@Override
protected void onSaveInstanceSt...
Any shortcut to initialize all array elements to zero?
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A default value of 0 for arrays of integral types is guaranteed by the language spec:
Each class variable, instance variable, or array component is initialized with a default value when it is created (§15.9, §15.10) [...] For ...
How to make RatingBar to show five stars
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<RatingBar
android:id="@+id/rating"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="?android:attr/ratingBarStyleSmall"
android:numS...