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Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
I have a pandas DataFrame and I want to delete rows from it where the length of the string in a particular column is greater than 2.
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Git: copy all files in a directory from another branch
How do I copy all files in a directory from another branch? I can list all of the files in that directory by doing
2 Answe...
Pick a random value from an enum?
...d answer and that left me with boilerplate code when I needed to randomize from my second Enum. Also, it's easy to forget about SecureRandom sometimes. Thanks.
– Siamaster
Jul 30 '18 at 10:43
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How to get the instance id from within an ec2 instance?
How can I find out the instance id of an ec2 instance from within the ec2 instance?
32 Answers
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How to train an artificial neural network to play Diablo 2 using visual input?
... to get an ANN to play a video game and and I was hoping to get some help from the wonderful community here.
7 Answers
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How to use NSJSONSerialization
I have a JSON string (from PHP's json_encode() that looks like this:
12 Answers
12
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REST API - why use PUT DELETE POST GET?
...f the oldest item would be to request:
Get: /cars/oldest
and use the ID from the resulting data to make a delete request:
Delete: /cars/id/[oldest id]
An issue with this method would be if another /cars item was added between when /oldest was requested and when the delete was issued.
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What is the difference between Swing and AWT?
...ross platforms - for instance, they may try to make calls into native code from Java.
Because AWT uses native GUI widgets, your OS knows about them and handles putting them in front of each other, etc., whereas Swing widgets are meaningless pixels within a window from your OS's point of view. Swing...
Why does LayoutInflater ignore the layout_width and layout_height layout parameters I've specified?
... visible as small red square if layout parameters are successfully applied from XML (red.xml):
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="25dp"
android:layout_height="25dp"
android:background...
Why do we use volatile keyword? [duplicate]
...f some_int, so it may be tempted to optimize the while loop by changing it from while(some_int == 100) to something which is equivalent to while(true) so that the execution could be fast (since the condition in while loop appears to be true always). (if the compiler doesn't optimize it, then it has ...