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Why switch is faster than if
...tiguous (or mostly contiguous with no large gaps) (case 0: case 1: case 2, etc.), then TableSwitch is used.
If the offsets are spread out with large gaps (case 0: case 400: case 93748:, etc.), then LookupSwitch is used.
The difference, in short, is that TableSwitch is done in constant time because...
How do I add tab completion to the Python shell?
...e.py shell , I get an InteractiveConsole shell - I can use tab completion, etc.
9 Answers
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Why use a public method in an internal class?
...ation detail; something else internal to this assembly needs the member in order to work correctly. A public member says "this member represents the key, documented functionality provided by this object."
Basically, my attitude is: suppose I decided to make this internal class into a public class. ...
How to detect user inactivity in Android
...ier). As for the onStop(), from what I remember, I call onBackPressed() in order to return to a login screen in the disconnect callback which in turn calls the onStop() method. When the user returns to the login screen manually, by pressing back, the timer needs to be stopped as well thus the stopDi...
String is immutable. What exactly is the meaning? [duplicate]
...riginal String "java".
Almost every method, applied to a String object in order to modify it, creates new String object. So, where do these String objects go? Well, these exist in memory, and one of the key goals of any programming language is to make efficient use of memory.
As applications grow,...
PostgreSQL database default location on Linux
...ostgresql/9.4/bin/postgres -D /var/lib/postgresql/9.4/main -c config_file=/etc/postgresql/9.4/main/postgresql.conf
so apparently /var/lib/postgresql/9.4/main.
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Convert a string representation of a hex dump to a byte array using Java?
...didn't really understand - like omit some leading 0x00 and also mix up the order of 1 byte in a 156 byte string I was playing with.
– rafraf
Sep 26 '08 at 16:43
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Downloading images with node.js [closed]
... Axios (a promise-based HTTP client for Node.js) to download images in the order of your choosing in an asynchronous environment:
npm i axios
Then, you can use the following basic example to begin downloading images:
const fs = require('fs');
const axios = require('axios');
/* =================...
Any good, visual HTML5 Editor or IDE? [closed]
... feature, I wish to have IDE that aware of HTML5 API like Web Storage API etc, when I type window <dot>, the sessionStorage and localStorage etc object autocompletion do not appear...
– Lee Chee Kiam
Mar 15 '12 at 9:09
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Test iOS app on device without apple developer program or jailbreak
... the app.
Prior to Xcode 7, a Program membership was indeed required in order to sign the provisioning certificates required to deploy apps to devices. The only other alternative was jailbreaking. With Xcode 7, you no longer need to jailbreak your device just to run apps distributed outside the A...