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What is the python keyword “with” used for? [duplicate]

...t in an object that supports the context management protocol (that is, has __enter__() and __exit__() methods). Update fixed VB callout per Scott Wisniewski's comment. I was indeed confusing with with using. share ...
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Can grep show only words that match search pattern?

... grep across a number of directories it did display the full file path for all matched files, whereas with -h it just displayed the matched words without any specification about which file it is. So, to match the original question, I think it is necessary in certain circumstances. ...
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How to return a 200 HTTP Status Code from ASP.NET MVC 3 controller

... 200 is just the normal HTTP header for a successful request. If that's all you need, just have the controller return new EmptyResult(); share | improve this answer | foll...
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How to fix HTTP 404 on Github Pages?

... I had just one commit with all my files. I pushed an empty commit, refreshed the page and it worked. git commit --allow-empty -m "Trigger rebuild" git push If this doesn't work, as @Hendrikto pointed out in the comments, check out the Github status ...
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“Delegate subtraction has unpredictable result” in ReSharper/C#?

...esn't guarantee an order of execution for its subscribers, so it doesn't really affect you either. Since the above mechanics can lead to unpredictable results, ReSharper issues a warning whenever it encounters a delegate subtraction operator. ReSharper is issuing this warning because multicast...
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How to capture UIView to UIImage without loss of quality on retina display

...IGraphicsBeginImageContext uses a fixed scale factor of 1.0, so you're actually getting exactly the same image on an iPhone 4 as on the other iPhones. I'll bet either the iPhone 4 is applying a filter when you implicitly scale it up or just your brain is picking up on it being less sharp than everyt...
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Python Flask, how to set content type

... Try like this: from flask import Response @app.route('/ajax_ddl') def ajax_ddl(): xml = 'foo' return Response(xml, mimetype='text/xml') The actual Content-Type is based on the mimetype parameter and the charset (defaults to UTF-8). Response (and request) objects are docume...
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Passing arguments to C# generic new() of templated type

...tion you must constrain it with the "new" flag. public static string GetAllItems<T>(...) where T : new() However that will only work when you want to call the constructor which has no parameters. Not the case here. Instead you'll have to provide another parameter which allows for the cr...
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Using curl POST with variables defined in bash script functions

... function that generates the post data of your script. This saves you from all sort of headaches concerning shell quoting and makes it easier to read an maintain the script than feeding the post data on curl's invocation line as in your attempt: generate_post_data() { cat <<EOF { "account...
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What's the Best Way to Shuffle an NSMutableArray?

...o be flipped only if the result is the opposite of the side that was originally up? – Kristopher Johnson Oct 22 '12 at 17:00 ...