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Differences between INDEX, PRIMARY, UNIQUE, FULLTEXT in MySQL?
What are the differences between PRIMARY, UNIQUE, INDEX and FULLTEXT when creating MySQL tables?
3 Answers
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What is the >>>= operator in C?
...ague as a puzzle, I cannot figure out how this C program actually compiles and runs. What is this >>>= operator and the strange 1P1 literal? I have tested in Clang and GCC. There are no warnings and the output is "???"
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Download data url file
...ess from a browser. They can just drag their zip directly into the browser and it'll let them download all the files within. They can also create new zip files by dragging individual files in.
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Ways to save enums in database
...store enumerations as numerical ordinal values anymore; it makes debugging and support way too difficult. We store the actual enumeration value converted to string:
public enum Suit { Spade, Heart, Diamond, Club }
Suit theSuit = Suit.Heart;
szQuery = "INSERT INTO Customers (Name, Suit) " +
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Detect when browser receives file download
...lution uses JavaScript on the client.
The client algorithm:
Generate a random unique token.
Submit the download request, and include the token in a GET/POST field.
Show the "waiting" indicator.
Start a timer, and every second or so, look for a cookie named "fileDownloadToken" (or whatever you dec...
'innerText' works in IE, but not in Firefox
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Firefox uses the W3C-compliant textContent property.
I'd guess Safari and Opera also support this property.
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Is there a good jQuery Drag-and-drop file upload plugin? [closed]
...a look at this one: http://aquantum-demo.appspot.com/file-upload
It also handles multiple file upload!
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How can I use jQuery in Greasemonkey?
...bes for manually adding a script element to the page.
Between version 0.8 and 0.9, @require is only processed when the script is first installed. If you change the list of required scripts, you need to uninstall your script and reinstall it; Greasemonkey downloads the required script once at instal...
WCF vs ASP.NET Web API [closed]
I've spent a few months trying to grasp the concepts behind WCF and recently I've developed my first WCF service application.
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django syncdb and an updated model
...support for migrations - take a look at the documentation.
For Django 1.6 and earlier
Django doesn't support migrations out of the box. There is a pluggable app for Django that does exactly that though, and it works great. It's called South.
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