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background function in Python

...em is. I've got a function that downloads the image needed and saves it locally. Right now it's run inline with the code that displays a message to the user, but that can sometimes take over 10 seconds for non-local images. Is there a way I could call this function when it's needed, but run it in t...
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Catch an exception thrown by an async void method

...ET, is it possible to catch an exception thrown by an async method in the calling method? 6 Answers ...
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Casting vs using the 'as' keyword in the CLR

...d within the if body.) That's slightly annoying in some cases, so if you really care about introducing the smallest number of variables possible in every scope, you might still want to use is followed by a cast. I don't think any of the answers so far (at the time of starting this answer!) have r...
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Why does setTimeout() “break” for large millisecond delay values?

...s due to setTimeout using a 32 bit int to store the delay so the max value allowed would be 2147483647 if you try 2147483648 you get your problem occurring. I can only presume this is causing some form of internal exception in the JS Engine and causing the function to fire immediately rathe...
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Do you need to use path.join in node.js?

... only real issue is that Windows command-line processors (or, more specifically, Windows-native command-line utilities) tend to interpret forward slashes as option specifiers rather than path components. Therefore, you need a backslashed path if you need to pass a path to a Windows command run as a ...
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How to delete an object by id with entity framework

... The same as @Nix with a small change to be strongly typed: If you don't want to query for it just create an entity, and then delete it. Customer customer = new Customer () { Id = id }; context.Customers.Attach(custome...
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jQuery selector regular expressions

... James Padolsey created a wonderful filter that allows regex to be used for selection. Say you have the following div: <div class="asdf"> Padolsey's :regex filter can select it like so: $("div:regex(class, .*sd.*)") Also, check the official documentation on se...
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Python read-only property

... Generally, Python programs should be written with the assumption that all users are consenting adults, and thus are responsible for using things correctly themselves. However, in the rare instance where it just does not make sens...
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UnicodeEncodeError: 'latin-1' codec can't encode character

...ommended that you only use keyword parameters. Consult the MySQL C API documentation for more information. host string, host to connect user string, user to connect as passwd string, password to use db string...
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Get the data received in a Flask request

.... In most common cases request.data will be empty because it's used as a fallback: request.data Contains the incoming request data as string in case it came with a mimetype Flask does not handle. request.args: the key/value pairs in the URL query string request.form: the key/value pairs in t...