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How to resize images proportionally / keeping the aspect ratio?

I have images that will be quite big in dimension and I want to shrink them down with jQuery while keeping the proportions constrained, i.e. the same aspect ratio. ...
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Is there an easy way to return a string repeated X number of times?

...t a certain number of indentations before a string based on an items depth and I'm wondering if there is a way to return a string repeated X times. Example: ...
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AsyncTask and error handling on Android

I'm converting my code from using Handler to AsyncTask . The latter is great at what it does - asynchronous updates and handling of results in the main UI thread. What's unclear to me is how to handle exceptions if something goes haywire in AsyncTask#doInBackground . ...
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How do you stop MySQL on a Mac OS install?

I installed MySQL via MacPorts . What is the command I need to stop the server (I need to test how my application behave when MySQL is dead)? ...
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How to search all loaded scripts in Chrome Developer Tools?

In Firebug, you can search some text and it will look for it in all scripts loaded on a page. Can the same be done in Chrome Developer tools while debugging client script? I tried it, but it seems to search only in the script I have open, and not the rest that are on the page. ...
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Swift variable decorations with “?” (question mark) and “!” (exclamation mark)

I understand that in Swift all variables must be set with a value, and that by using optionals we can set a variable to be set to nil initially. ...
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MYSQL OR vs IN performance

... not believe people who give their "opinion", science is all about testing and evidence. I ran a loop of 1000x the equivalent queries (for consistency, I used sql_no_cache): IN: 2.34969592094s OR: 5.83781504631s Update: (I don't have the source code for the original test, as it was 6 years ago, ...
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Is it possible to change a UIButtons background color?

...s until a web service responds. Must I change to highlight colour on press and have a timer change to disabled colour while waiting for the ws to respond? If I am missing the point can someone please explain. Thanks Polly. – Polly Aug 11 '12 at 11:05 ...
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How do I send a file as an email attachment using Linux command line?

... that uses mysqldump to back up each of my MySQL databases to .sql files and packages them together as a compressed .tar file. The next step I want to accomplish is to send that tar file through email to a remote email server for safekeeping. I've been able to send the raw script in the body an ...
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Which exception should I raise on bad/illegal argument combinations in Python?

...tion.. def import_to_orm(name, save=False, recurse=False): if recurse and not save: raise ValueError("save must be True if recurse is True") There's really no point in doing class BadValueError(ValueError):pass - your custom class is identical in use to ValueError, so why not use that...