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Meaning of Android Studio error: Not annotated parameter overrides @NonNull parameter

I'm trying out Android Studio. Upon creating a new project and adding a default onSaveInstanceState method to the create MyActivity class, when I try to commit the code to Git, I get a strange error I don't understand. The code is this: ...
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Express-js can't GET my static files, why?

... Thank you. As someone who is new to Node and Express, the Express documentation seems sketchy until you discover that Connect is where the middleware docs are at. – Nate Apr 10 '12 at 17:31 ...
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psql invalid command \N while restore sql

... Postgres uses "\N" as substitute symbol for NULL value. But all psql commands starts by backslash "\" symbol. So you can get this messages, when probably copy statement fails, but a loading of dump continues. This message is only false alarm. You have to search a lines before for reason why COPY s...
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How do I test a file upload in rails?

I have a controller which is responsible for accepting JSON files and then processing the JSON files to do some user maintenance for our application. In user testing the file upload and processing works, but of course I would like to automate the process of testing the user maintenance in our testin...
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What is context in _.each(list, iterator, [context])?

... a low-level helper. The goal is to have your custom logic bundling a verb and two nouns, with minimal boilerplate. Admittedly, arrow functions have eliminated a lot of the "code golf" advantages of generic pure functions, but the semantic and consistency advantages remain. I always add "use stri...
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Parsing HTML using Python

... BeautifulSoup object (remember, it's a tree node basically) of the first (and in this case, only) body element of the root element (in our case, html) – Aadaam Jul 29 '12 at 12:38 ...
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How do I do a HTTP GET in Java? [duplicate]

...s's answer (using Apache HttpClient) is that HttpClient can automatically handle redirects and proxy authentication for you. The standard Java API classes that you use here don't do that for you. On the other hand, using the standard API classes has the advantage that you don't need to include a thi...
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Alias with variable in bash [duplicate]

... I'd create a function for that, rather than alias, and then exported it, like this: function tail_ls { ls -l "$1" | tail; } export -f tail_ls Note -f switch to export: it tells it that you are exporting a function. Put this in your .bashrc and you are good to go. ...
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django order_by query set, ascending and descending

... edited Jan 20 '14 at 18:10 nandhp 4,05411 gold badge2424 silver badges4141 bronze badges answered Mar 23 '12 at 6:42 ...
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Is it bad practice to return from within a try catch finally block?

...t a bad practice. Putting return where it makes sense improves readability and maintainability and makes your code simpler to understand. You shouldn't care as finally block will get executed if a return statement is encountered. ...