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Convert pandas dataframe to NumPy array
...Consistency: to_numpy()
In the spirit of better consistency throughout the API, a new method to_numpy has been introduced to extract the underlying NumPy array from DataFrames.
# Setup.
df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]}, index=['a', 'b', 'c'])
df.to_numpy()
array([[1, 4],
[2...
Why would one use nested classes in C++?
...hinder me from updating my class as anything exposed is part of the public API and must be maintained forever. By making the class private, I not only hide the implementation I am also saying this is mine and I may change it at any time so you can not use it.
Look at std::list or std::map they all ...
What exactly is Apache Camel?
...ration Patterns (EIPs)
connectivity to a great variety of transports and APIs
easy to use Domain Specific Languages (DSLs) to wire EIPs and transports together
There is also a free chapter of Camel in Action which introduces Camel in the first chapter. Jonathan is a co-author on that book w...
Set timeout for ajax (jQuery)
... is not called for cross-domain script and
JSONP requests.
src: http://api.jquery.com/jQuery.ajax/
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How to move child element from one parent to another using jQuery [duplicate]
... simple:
$('#parentNode').append($('#childNode'));
According to http://api.jquery.com/append/
You can also select an element on the page and insert it into another:
$('.container').append($('h2'));
If an element selected this way is inserted into a single location
elsewhere in t...
Callback when CSS3 transition finishes
...
We use .on() rather than .bind() for jQuery v1.7+ api.jquery.com/bind
– olo
May 21 '14 at 7:19
...
What is uintptr_t data type
...s the pointer. This is useful for returning a reference to an object from APIs where you want to keep the object private to the library and prevent applications from having access to it. The application is then forced to use the API to perform any operations on the object
– J...
How do you create a dictionary in Java? [closed]
...There's an Abstract Class Dictionary
http://docs.oracle.com/javase/6/docs/api/java/util/Dictionary.html
However this requires implementation.
Java gives us a nice implementation called a Hashtable
http://docs.oracle.com/javase/6/docs/api/java/util/Hashtable.html
...
Are there any SHA-256 javascript implementations that are generally considered trustworthy?
...
On https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/digest I found this snippet that uses internal js module:
async function sha256(message) {
// encode as UTF-8
const msgBuffer = new TextEncoder('utf-8').encode(message);
// h...
Sending a notification from a service in Android
...);
notificationManager.notify(0, n);
Best way
Code above needs minimum API level 11 (Android 3.0).
If your minimum API level is lower than 11, you should you use support library's NotificationCompat class like this.
So if your minimum target API level is 4+ (Android 1.6+) use this:
impo...