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data.frame rows to a list
I have a data.frame which I would like to convert to a list by rows, meaning each row would correspond to its own list elements. In other words, I would like a list that is as long as the data.frame has rows.
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Remove duplicate dict in list in Python
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Try this:
[dict(t) for t in {tuple(d.items()) for d in l}]
The strategy is to convert the list of dictionaries to a list of tuples where the tuples contain the items of the dictionary. Since the tuples can be hashed, you can remove duplicates using...
How do you create a Swift Date object?
How do you create a date object from a date in swift xcode.
10 Answers
10
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psql: FATAL: database “” does not exist
I'm using the PostgreSql app for mac ( http://postgresapp.com/ ). I've used it in the past on other machines but it's giving me some trouble when installing on my macbook. I've installed the application and I ran:
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What's the difference between array_merge and array + array?
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A word of caution for beginners here, the result of the operation in both cases is null if any one of the arrays is null. Some might not care about this assuming since it is a union operation, the result will be the proper (not-null) array if one of ...
How can I represent an 'Enum' in Python?
I'm mainly a C# developer, but I'm currently working on a project in Python.
43 Answers
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Qt 5.1.1: Application failed to start because platform plugin “windows” is missing
...er a long search I found a comment which had been ignored by all users pointing to the missing lib. Now, many months later, the comment has been changed to an answer. However, when I answered this question by msyself I intended to help other people by directly providing the solution. This should n...
What is the difference between Java RMI and RPC?
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RPC is C based, and as such it has structured programming semantics, on the other side, RMI is a Java based technology and it's object oriented.
With RPC you can just call remote functions exported into a server, in RMI you can have references to remote objects and invoke their...
comparing sbt and Gradle [closed]
I am diving into Scala and noticed sbt. I have been quite happy with Gradle in java/groovy projects, and I know there's a scala plugin for Gradle.
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When to use the different log levels
There are different ways to log messages, in order of fatality:
18 Answers
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