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Checking network connection

...t have a working internet connection, the DNS lookup itself may block the call to urllib_request.urlopen for more than a second. Thanks to @rzetterberg for pointing this out. If the fixed IP address above is not working, you can find a current IP address for google.com (on unix) by running % dig...
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Which characters are valid/invalid in a JSON key name?

... Not those. Whatever needs escaping in JavaScript generally needs it in JSON. Best to get it from the horse's mouth, though, at json.org. It takes about one minute to read the entire spec end-to-end. – Marcelo Cantos Dec 30 '11 at 4:21 ...
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Most efficient T-SQL way to pad a varchar on the left to a certain length?

...ecause you are dealing with a fixed length). But as I said you should really avoid doing this in your database. share | improve this answer | follow | ...
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File uploading with Express 4.0: req.files undefined

... this: { file: { fieldName: 'file', originalFilename: '360px-Cute_Monkey_cropped.jpg', name: '360px-Cute_Monkey_cropped.jpg' path: 'uploads/6323-16v7rc.jpg', type: 'image/jpeg', headers: { 'content-disposition': 'form-data; name="file"; filename="360px-Cute_Monke...
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Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]

...ith something like map or collect would be built in, and nobody has to see all the hoops the compiler has to go through to make them work smoothly. In Scala, it's all in a library, and therefore out in the open. In fact the functionality of map that's supported by its complicated type is pretty adv...
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How to load an ImageView by URL in Android? [closed]

... This is awesome. And should be much higher on the list. The asynctask allows this to load without freezing up the UI! – Kyle Clegg Jun 3 '12 at 5:26 3 ...
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Is it possible to use AutoLayout with UITableView's tableHeaderView?

...viewDidLoad { [super viewDidLoad]; self.header = [[SCAMessageView alloc] init]; self.header.titleLabel.text = @"Warning"; self.header.subtitleLabel.text = @"This is a message with enough text to span multiple lines. This text is set at runtime and might be short or long."; //se...
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How to detect if URL has changed after hash in JavaScript

...hange event on window. In some old browsers, you need a timer that continually checks location.hash. If you're using jQuery, there is a plugin that does exactly that. share | improve this answer ...
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'git' is not recognized as an internal or external command

... Which path should I add on PATH; <git_installation>\bin , <git_installation>\libexec\git-core or <git_installation>\cmd? Each of them contains git.exe. – IronBlossom May 29 '14 at 11:38 ...
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test a file upload using rspec - rails

... You can use fixture_file_upload method to test file uploading: Put your test file in "{Rails.root}/spec/fixtures/files" directory before :each do @file = fixture_file_upload('files/test_lic.xml', 'text/xml') end it "can upload a license" do...