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How do you read a file into a list in Python? [duplicate]
I want to prompt a user for a number of random numbers to be generated and saved to a file. He gave us that part. The part we have to do is to open that file, convert the numbers into a list, then find the mean, standard deviation, etc. without using the easy built-in Python tools.
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Given a view, how do I get its viewController?
...r, because that would break MVC principles.
The controller, on the other hand, knows which view it's responsible for (self.view = myView), and usually, this view delegates methods/events for handling to the controller.
Typically, instead of a pointer to your view, you should have a pointer to your...
Best way to run scheduled tasks [closed]
...ks for our ASP.NET website. But I think this approach is a bit error prone and difficult to maintain. How do you execute your scheduled task (in an windows/IIS/ASP.NET environment)
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Specifying an Index (Non-Unique Key) Using JPA
...il because there are literally millions of queries on this field per day, and its a bit slow without the key.
11 Answers
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Why is my program slow when looping over exactly 8192 elements?
...rom the program in question. The matrix img[][] has the size SIZE×SIZE, and is initialized at:
2 Answers
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Advantages of Binary Search Trees over Hash Tables
...ast two additional pointers per element (three if using a parent pointer), and array-based BST's can waste a lot of memory for unfilled portions of the tree.
– Solaraeus
Jul 11 '12 at 22:28
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How to call a method after a delay in Android
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Kotlin
Handler(Looper.getMainLooper()).postDelayed({
//Do something after 100ms
}, 100)
Java
final Handler handler = new Handler(Looper.getMainLooper());
handler.postDelayed(new Runnable() {
@Override
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Emacs bulk indent for Python
...by two levels of indention, or some arbitary amount you can prefix the command with an argument:
C-u 8 C-c > shifts the region 8 spaces to the right
C-u 8 C-c < shifts the region 8 spaces to the left
Another alternative is to use M-x indent-rigidly which is bound to C-x TAB:
C-u 8 ...
How to replace NaN values by Zeroes in a column of a Pandas Dataframe?
I have a Pandas Dataframe as below:
12 Answers
12
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Saving a Numpy array as an image
...yPNG. It's a pure Python (no dependencies) open source PNG encoder/decoder and it supports writing NumPy arrays as images.
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