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How to quietly remove a directory with content in PowerShell
...o remove everything within that folder: Remove-Item './folder/*'. If you really want to clear out only files of all folders you can list all leafs and pipe it to the Remove-Item cmdlet Get-ChildItem -Recurse -File | Remove-Item
– Michael Kargl
Jun 1 '19 at 11:3...
Replacing column values in a pandas DataFrame
...strings containing numbers. You can convert them to "1" and "0", if you really want, but I'm not sure why you'd want that.)
The reason your code doesn't work is because using ['female'] on a column (the second 'female' in your w['female']['female']) doesn't mean "select rows where the value is 'fe...
What is Mocking?
... a "minimal" simulated object. The stub implements just enough behavior to allow the object under test to execute the test.
A mock is like a stub but the test will also verify that the object under test calls the mock as expected. Part of the test is verifying that the mock was used correctly.
To gi...
When to use LinkedList over ArrayList in Java?
...ements it with a doubly-linked list. ArrayList implements it with a dynamically re-sizing array.
As with standard linked list and array operations, the various methods will have different algorithmic runtimes.
For LinkedList<E>
get(int index) is O(n) (with n/4 steps on average), but O(1) w...
Default constructor vs. inline field initialization
...ference.
However, if you do have explicit constructors, I'd prefer to put all initialization code into those (and chain them) rather than splitting it up between constructors and field initializers.
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Payment Processors - What do I need to know if I want to accept credit cards on my website? [closed]
... with my own business. If you have some network technical knowledge, it really isn't that bad. Otherwise you will be better off using Paypal or another type of service.
The process starts by getting a merchant account setup and tied to your bank account. You may want to check with your bank, bec...
What's the fastest way to convert String to Number in JavaScript?
...);
parseInt(x, 10);
parseFloat(x);
+x;
By this quick test I made, it actually depends on browsers.
http://jsperf.com/best-of-string-to-number-conversion/2
Implicit marked the fastest on 3 browsers, but it makes the code hard to read… So choose whatever you feel like it!
...
How to load a UIView using a nib file created with Interface Builder
...ing a bit elaborate, but something that should be possible. So here is a challenge for all you experts out there (this forum is a pack of a lot of you guys :) ).
...
Best way to do Version Control for MS Excel
...lution here.
The solution for me was to create a spreadsheet that exports all modules on save, and removes and re-imports the modules on open. Yes, this could be potentially dangerous for converting existing spreadsheets.
This allows me to edit the macros in the modules via Emacs (yes, emacs) or n...
Why does C++ need a separate header file?
I've never really understood why C++ needs a separate header file with the same functions as in the .cpp file. It makes creating classes and refactoring them very difficult, and it adds unnecessary files to the project. And then there is the problem with having to include header files, but having to...