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React.js: Identifying different inputs with one onChange handler

... I suggest sticking to standard HTML attributes like name on input Elements to identify your inputs. Also, you don't need to keep "total" as a separate value in state because it is composable by adding other values in your state: var Hello = React.c...
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Saving interactive Matplotlib figures

Is there a way to save a Matplotlib figure such that it can be re-opened and have typical interaction restored? (Like the .fig format in MATLAB?) ...
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Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.

What is the best practice if I want to require a relative file in Ruby and I want it to work in both 1.8.x and >=1.9.2? ...
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Slow Requests on Local Flask Server

Just starting to play around with Flask on a local server and I'm noticing the request/response times are way slower than I feel they should be. ...
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Password masking console application

...ou one place back, then prints a space (which takes you one place forward) and then takes you back again, so you end up where the deleted '*' character was. – dtb Aug 4 '10 at 10:23 ...
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Best explanation for languages without null

...deling a door. It can be in one of three states: open, shut but unlocked, and shut and locked. Now I could model it along the lines of class Door private bool isShut private bool isLocked and it is clear how to map my three states into these two boolean variables. But this leaves a fou...
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Nearest neighbors in high-dimensional data?

...d the nearest neighbors for a given vector. My vector is now 21 dimensions and before I proceed further, because I am not from the domain of Machine Learning nor Math, I am beginning to ask myself some fundamental questions: ...
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Python try-else

...- if there was no exception. Honestly, I've never found a need. However, Handling Exceptions notes: The use of the else clause is better than adding additional code to the try clause because it avoids accidentally catching an exception that wasn’t raised by the code being protected by...
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How to convert PascalCase to pascal_case?

...ce beginning with a lowercase letter must be followed by lowercase letters and digits; A sequence beginning with an uppercase letter can be followed by either: one or more uppercase letters and digits (followed by either the end of the string or an uppercase letter followed by a lowercase letter o...
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How to prevent a dialog from closing when a button is clicked

...input. When I click the "yes" button on dialog, it will validate the input and then close the dialog. However, if the input is wrong, I want to remain in the same dialog. Every time no matter what the input is, the dialog should be automatically closed when I click on the "no" button. How can I disa...