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Label encoding across multiple columns in scikit-learn
...fantastic replies)
However, for the purpose of a few classification tasks etc. you could use
pandas.get_dummies(input_df)
this can input dataframe with categorical data and return a dataframe with binary values. variable values are encoded into column names in the resulting dataframe. more
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Error handling with node.js streams
...async calls, for example, or derive a couple of fields, remap some things, etc.
For how to create a transform stream see here and here. All you have to do is :
include the stream module
instantiate ( or inherit from) the Transform class
implement a _transform method which takes a (chunk,...
Strange out of memory issue while loading an image to a Bitmap object
...veral decoding methods (decodeByteArray(), decodeFile(), decodeResource(), etc.) for creating a Bitmap from various sources. Choose the most appropriate decode method based on your image data source. These methods attempt to allocate memory for the constructed bitmap and therefore can easily result ...
How to call a PHP function on the click of a button
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i did but just realized that //code.jquery.com/...etc doesn't load on localhost, https:// does! code works fine sorry my mistake.
– Benjamin
May 28 '15 at 5:55
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Can someone explain Microsoft Unity?
...the IMyService, you can't unit test it easily, you can't change it easily, etc.)
With an IoC container you "configure" the container to resolve those dependencies for you. So with a constructor-based injection scheme, you just pass the interface to the IMyService dependency into the constructor. Wh...
XMLHttpRequest cannot load file. Cross origin requests are only supported for HTTP
...get back to the C:\ Root directory - type cd/
type cd Drive:\Folder\Folder\etc to get to the folder where your .Html file is (or php, etc)
Check the path. type: path at the command prompt. You must see the path to the folder where python is located. For example, if python is in C:\Python27, then...
Print a list in reverse order with range()?
...ge(10), not range(9). Also, if you want a fully-formed list (for slicing, etc.), you should do list(reversed(range(10))).
– John Y
Sep 2 '11 at 16:49
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How do you validate a URL with a regular expression in Python?
...+ '-.') # and others?
assert pieces.scheme in ['http', 'https', 'ftp'] # etc.
It might be slower, and maybe you'll miss conditions, but it seems (to me) a lot easier to read and debug than a regular expression for URLs.
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Java and SQLite [closed]
...Class.forName("org.sqlite.JDBC");
Connection conn = DriverManager.getConnection("jdbc:sqlite:test.db");
Statement stat = conn.createStatement();
stat.executeUpdate("drop table if exists people;");
stat.executeUpdate("create table people (name, occupation);");
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In Python, when should I use a function instead of a method?
...bject like a person.
Attributes are the person's name, height, shoe size, etc.
Methods and functions are operations that the person can perform.
If the operation could be done by just any ol' person, without requiring anything unique to this one specific person (and without changing anything on t...