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Android equivalent of NSUserDefaults in iOS
...references("MyPreferences", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.putInt("var1", myvar);
editor.commit();
//--READ data
myvar = preferences.getInt("var1", 0);
Where 'context' is the current context (e.g. in an activity subclass could be th...
Rerender view on browser resize with React
...tom Hook that listens to the window resize event, something like this:
import React, { useLayoutEffect, useState } from 'react';
function useWindowSize() {
const [size, setSize] = useState([0, 0]);
useLayoutEffect(() => {
function updateSize() {
setSize([window.innerWidth, window....
How can I deploy/push only a subdirectory of my git repo to Heroku?
...master
It appears currently that git-subtree is being included into git-core, but I don't know if that version of git-core has been released yet.
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Looping a video with AVFoundation AVPlayer?
...tCenter] addObserver:self
selector:@selector(playerItemDidReachEnd:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:[avPlayer currentItem]];
this will preven...
Smart pointers: who owns the object? [closed]
C++ is all about memory ownership - aka ownership semantics .
11 Answers
11
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How do I see if Wi-Fi is connected on Android?
...he state of the Wi-Fi adapter. From there you can check if it is connected or even available.
ConnectivityManager connManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo mWifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if (mWifi.isConnected...
How to add Google Analytics Tracking ID to GitHub Pages
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Update: Added steps descriptions for others
Solved it:
had to include username.github.io (link that I want to track) in Google Analytics website section.
you can check GitHub help page here
After that I was provided with an Tracker ID.
Note: Yo...
What is getattr() exactly and how do I use it?
...n advance which attribute you want (it comes from a string). Very useful for meta-programming.
you want to provide a default value. object.y will raise an AttributeError if there's no y. But getattr(object, 'y', 5) will return 5.
...
Applying function with multiple arguments to create a new pandas column
...
Alternatively, you can use numpy underlying function:
>>> import numpy as np
>>> df = pd.DataFrame({"A": [10,20,30], "B": [20, 30, 10]})
>>> df['new_column'] = np.multiply(df['A'], df['B'])
>>> df
A B new_column
0 10 20 200
1 20 30 ...
Project structure for Google App Engine
...Google App Engine right when it came out, to play with the technology and work on a pet project that I had been thinking about for a long time but never gotten around to starting. The result is BowlSK . However, as it has grown, and features have been added, it has gotten really difficult to keep...