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How is Python's List Implemented?
...It's a dynamic array. Practical proof: Indexing takes (of course with extremely small differences (0.0013 µsecs!)) the same time regardless of index:
...>python -m timeit --setup="x = [None]*1000" "x[500]"
10000000 loops, best of 3: 0.0579 usec per loop
...>python -m timeit --setup="x = [No...
How to pass arguments into a Rake task with environment in Rails? [duplicate]
I am able to pass in arguments as follows:
5 Answers
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Sending command line arguments to npm script
... server.js --port=1337 => npm run server -- --port=1337
To get the parameter value, see this question. For reading named parameters, it's probably best to use a parsing library like yargs or minimist; nodejs exposes process.argv globally, containing command line parameter values, but this is a l...
pandas GroupBy columns with NaN (missing) values
I have a DataFrame with many missing values in columns which I wish to groupby:
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Capture characters from standard input without waiting for enter to be pressed
I can never remember how I do this because it comes up so infrequently for me. But in C or C++, what is the best way to read a character from standard input without waiting for a newline (press enter).
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How to automate createsuperuser on django?
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At least on Django 1.11. the order of the arguments is ('username', 'email', 'pass'), not ('email', 'username', 'pass'). See: docs.djangoproject.com/en/1.11/ref/contrib/auth/…
– np8
May 14 '17 at 12:29
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How can I get pg_dump to authenticate properly
...st variable PGPASSWORD and .pgpass and neither of these two will allow me to authenticate to the database. I have chmod 'd .pgpass to appropriate permissions and also tried:
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In Clojure 1.3, How to read and write a file
I'd like to know the "recommended" way of reading and writing a file in clojure 1.3 .
6 Answers
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Making a LinearLayout act like an Button
...ve styled to look like a button , and it contains a few text/ImageView elements. I would like to make the whole LinearLayout act like a button , in particular to give it states that are defined in a so it has a different background when it is pressed.
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advantage of tap method in ruby
...ading a blog article and noticed that the author used tap in a snippet something like:
18 Answers
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