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React JSX: selecting “selected” on selected option

In a React component for a <select> menu, I need to set the selected attribute on the option that reflects the application state. ...
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Get file name from URL

In Java, given a java.net.URL or a String in the form of http://www.example.com/some/path/to/a/file.xml , what is the easiest way to get the file name, minus the extension? So, in this example, I'm looking for something that returns "file" . ...
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Signing a Windows EXE file

I have an EXE file that I should like to sign so that Windows will not warn the end user about an application from an "unknown publisher". I am not a Windows developer. The application in question is a screensaver generated from an application that generates screensaver applications. As such I hav...
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How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?

...objects (like lists, for example). Even if your values are hashable, since sets are semantically unordered, the behavior is undefined in regards to precedence. So don't do this: >>> c = dict(a.items() | b.items()) This example demonstrates what happens when values are unhashable: >>&...
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Check if a value exists in pandas dataframe index

...Y', 'Y'], 'col3': [1, 2, 3, 4]}, columns=['col1', 'col2', 'col3']) df = df.set_index(['col1', 'col2']) in df.index works for the first level only when checking single index value. 'a' in df.index # True 'X' in df.index # False Check df.index.levels for other levels. 'a' in df.index.lev...
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How to get numbers after decimal point?

How do I get the numbers after a decimal point? 29 Answers 29 ...
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How to convert int to NSString?

...atter. This will add thousands separators, and will honor the localization settings for the user: NSInteger n = 10000; NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init]; formatter.numberStyle = NSNumberFormatterDecimalStyle; NSString *string = [formatter stringFromNumber:@(n)]; In t...
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Query-string encoding of a Javascript Object

... @Ofri: For POST requests to a server set up to receive it, JSON is a good choice. For GET requests, if you're sending anything other than a few simple parameters to the server then it's likely your design is wrong. – Tim Down ...
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Can I use a min-height for table, tr or td?

...Ipsum</div> </td> </tr> </table> and set the divs to the min-height: div { min-height: 300px; } Hope this is what you want ... share | improve this answe...
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How to configure Sublime Text 2/3 to use direct Ctrl+Tab order and to create new tabs after the last

...ublime-keymap: click "Preferences" click "Key Bindings" You will see two settings file, select a file that named "User" share | improve this answer | follow ...