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What does -> mean in Python function definitions?

...to attach a metadata string to various types of object. This is amazingly handy, so Python 3 extends the feature by allowing you to attach metadata to functions describing their parameters and return values. There's no preconceived use case, but the PEP suggests several. One very handy one is to al...
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Swapping column values in MySQL

I have a MySQL table with coordinates, the column names are X and Y. Now I want to swap the column values in this table, so that X becomes Y and Y becomes X. The most apparent solution would be renaming the columns, but I don't want to make structure changes since I don't necessarily have permission...
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What is difference between cacerts and keystore?

What's the difference between the two, cacerts and keystore? 4 Answers 4 ...
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Total width of element (including padding and border) in jQuery

...bject, how can one get the total width of an element, including its border and padding, using jQuery? I've got the jQuery dimensions plugin, and running .width() on my 760px-wide , 10px padding DIV returns 760 . ...
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What is your preferred style for naming variables in R? [closed]

Which conventions for naming variables and functions do you favor in R code? 9 Answers ...
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Visual Studio : short cut Key : Duplicate Line

Is there a shortcut for Duplicate Line command in Visual Studio 2008? 30 Answers 3...
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Why not use HTTPS for everything?

If I was setting up a server, and had the SSL certificate(s), why wouldn't I use HTTPS for the entire site instead of just for purchases/logins? I would think it would make more sense just to encrypt the entire site, and protect the user entirely. It would prevent problems such as deciding what has ...
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What is the difference between precision and scale?

What is the difference between precision and scale in Oracle? In tutorials they usually leave scale empty and set precision to 6 when creating a primary key. ...
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Should methods in a Java interface be declared with or without a public access modifier?

...d, but discouraged as a matter of style, to redundantly specify the public and/or abstract modifier for a method declared in an interface. share | improve this answer | foll...
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How to quickly and conveniently disable all console.log statements in my code?

...e.log = function() {} That's it, no more messages to console. EDIT: Expanding on Cide's idea. A custom logger which you can use to toggle logging on/off from your code. From my Firefox console: var logger = function() { var oldConsoleLog = null; var pub = {}; pub.enableLogger = ...