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What do *args and **kwargs mean? [duplicate]

... function definition’s argument list allows that function to accept an arbitrary number of arguments and/or keyword arguments. For example, if you wanted to write a function that returned the sum of all its arguments, no matter how many you supply, you could write it like this: def my_sum(*args)...
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transform object to array with lodash

How can I transform a big object to array with lodash? 11 Answers 11 ...
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Batch File; List files in directory, only filenames?

This is probably a very simple question, but I'm having trouble with it. Basically, I am trying to write a Batch File and I need it to list all the files in a certain directory. The dir command will do this, but it also gives a bunch of other information; I want it to list ONLY the file names an...
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What's the difference between lists and tuples?

... Apart from tuples being immutable there is also a semantic distinction that should guide their usage. Tuples are heterogeneous data structures (i.e., their entries have different meanings), while lists are homogeneous sequences. Tuples have st...
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grep a file, but show several surrounding lines?

I would like to grep for a string, but also show the preceding five lines and the following five lines as well as the matched line. How would I be able to do this? ...
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How can I see the size of files and directories in linux? [closed]

...use df -m , then it shows the size of all the directory at the top level, but, for the directories and files inside the directory, how do I check the size? ...
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Use of Initializers vs Constructors in Java

So I've been brushing up on my Java skills as of late and have found a few bits of functionality that I didn't know about previously. Static and Instance Initializers are two such techniques. ...
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How can I reorder a list? [closed]

If I have a list [a,b,c,d,e] how can I reorder the items in an arbitrary manner like [d,c,a,b,e] ? 12 Answers ...
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Why is === faster than == in PHP?

... Because the equality operator == coerces, or converts, the data type temporarily to see if it’s equal to the other operand, whereas === (the identity operator) doesn’t need to do any converting whatsoever and thus less w...
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Can someone explain the right way to use SBT?

I'm getting out off the closet on this! I don't understand SBT. There, I said it, now help me please. 4 Answers ...