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How can you encode a string to Base64 in JavaScript?
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btoa() accepts a “string” where each character represents an 8-bit byte – if you pass a string containing characters that can’t be represented in 8 bits, it will probably break. This isn’t a problem if you’re actually treating the string as a byte array, but if you’re trying to ...
Sqlite primary key on multiple columns
...hat is the syntax for specifying a primary key on more than 1 column in SQLITE ?
9 Answers
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How does Google's Page Speed lossless image compression work?
When you run Google's PageSpeed plugin for Firebug/Firefox on a website it will suggest cases where an image can be losslessly compressed, and provide a link to download this smaller image.
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How do I handle the window close event in Tkinter?
...d WM_DELETE_WINDOW, and is used to define what happens when the user explicitly closes a window using the window manager.
You can use the protocol method to install a handler for this protocol (the widget must be a Tk or Toplevel widget):
Here you have a concrete example:
import tkinter as tk
fro...
How to run a function when the page is loaded?
... want to run a function when the page is loaded, but I don’t want to use it in the <body> tag.
8 Answers
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Memcache Vs. Memcached [duplicate]
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What are the advantages of one over the other?
Can you also suggest the criteria used to choose between one or the other?
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How do I programmatically “restart” an Android app?
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You can use PendingIntent to setup launching your start activity in the future and then close your application
Intent mStartActivity = new Intent(context, StartActivity.class);
int mPendingIntentId = 123456;
PendingIntent mPendingIntent = PendingIntent.getActivity(context, mPendingInt...
Different types of thread-safe Sets in Java
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1) The CopyOnWriteArraySet is a quite simple implementation - it basically has a list of elements in an array, and when changing the list, it copies the array. Iterations and other accesses which are running at this time continue with the o...
How to check whether mod_rewrite is enable on server?
Currently I am using the hosting with lightspeed server. Hosting says mod_rewrite is enabled but I can't get my script working there. Whenever I try to access the URL, it returns 404 - not found page.
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.NET 4.0 has a new GAC, why?
%windir%\Microsoft.NET\assembly\ is the new GAC . Does it mean now we have to manage two GACs, one for .NET 2.0-3.5 applications and the other for .NET 4.0 applications?
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