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How to create a density plot in matplotlib?

...and more examples: mail.scipy.org/pipermail/scipy-user/2010-January/023877.html and there is an enhancement ticket at projects.scipy.org/scipy/ticket/1092 . Note, gaussian_kde is designed for n-dimensional data. – Josef Nov 11 '10 at 14:53 ...
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Gson custom seralizer for one variable (of many) in an object using TypeAdapter

...ps://google.github.io/gson/apidocs/com/google/gson/annotations/JsonAdapter.html The page has been moved to here: https://www.javadoc.io/doc/com.google.code.gson/gson/latest/com.google.gson/com/google/gson/annotations/JsonAdapter.html Example: private static final class Gadget { @JsonAdapter(U...
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How to call an external command?

...use shlex.split for an easy way to do this docs.python.org/2/library/shlex.html#shlex.split – Daniel F Sep 20 '18 at 18:05 1 ...
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Should I always use a parallel stream when possible?

... This post gives further details about the NQ model: gee.cs.oswego.edu/dl/html/StreamParallelGuidance.html – Pino Apr 1 '15 at 8:25 4 ...
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What is the difference between Unidirectional and Bidirectional JPA and Hibernate associations?

...the Hibernate docs: http://docs.jboss.org/hibernate/core/3.3/reference/en/html/best-practices.html Specifically: Prefer bidirectional associations: Unidirectional associations are more difficult to query. In a large application, almost all associations must be navigable in both dire...
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Foreign keys in mongo?

... Mongoid or MongoMapper. http://mongoid.org/docs/relations/referenced/1-n.html In a NoSQL database like MongoDB there are not 'tables' but collections. Documents are grouped inside Collections. You can have any kind of document – with any kind of data – in a single collection. Basically, in a ...
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How can I use a Python script in the command line without cd-ing to its directory? Is it the PYTHONP

...ogram as the variable sys.path. http://docs.python.org/2/using/cmdline.html#envvar-PYTHONPATH What you're looking for is PATH. export PATH=$PATH:/home/randy/lib/python However, to run your python script as a program, you also need to set a shebang for Python in the first line. Something li...
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Sending POST data in Android

...ces: https://developer.android.com/reference/java/net/HttpURLConnection.html How to add parameters to HttpURLConnection using POST using NameValuePair Older Answer Note: This solution is outdated. It only works on Android devices up to 5.1. Android 6.0 and above do not include the Apache http ...
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How to UPSERT (MERGE, INSERT … ON DUPLICATE UPDATE) in PostgreSQL?

...te in PostgreSQL? http://petereisentraut.blogspot.com/2010/05/merge-syntax.html Upsert with a transaction Is SELECT or INSERT in a function prone to race conditions? SQL MERGE on the PostgreSQL wiki Most idiomatic way to implement UPSERT in Postgresql nowadays What about MERGE? SQL-standard MERGE a...
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Who architected / designed C++'s IOStreams, and would it still be considered well-designed by today'

... bits and pieces of IOStreams history: www2.research.att.com/~bs/01chinese.html (this link seems to be temporarily broken right now, but you can try Google's page cache) – stakx - no longer contributing May 2 '10 at 11:48 ...