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Finding the source code for built-in Python functions?
...out what file a particular module or function is implemented in you can usually print the __file__ attribute. Alternatively, you may use the inspect module, see the section Retrieving Source Code in the documentation of inspect.
For built-in classes and methods this is not so straightforward since ...
How do I split a string so I can access item x?
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This works but allocates a lot of memory and wastes CPU.
– jjxtra
May 26 '15 at 16:56
2
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What is the best java image processing library/approach? [closed]
...le to use - a single class consists of a set of simple graphics operations all defined as static methods that you pass an image and get back a result.
The most basic example of using the library would look like this:
BufferedImage thumbnail = Scalr.resize(image, 150);
And a more typical usage to...
What do the &,
Up until now I have only used database.yml with each parameter called out explicitly, in the file below it uses some characters I do not understand. What does each line and symbol(&,*,
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Is there a REAL performance difference between INT and VARCHAR primary keys?
... and a coworker won't budge on the INT AUTO_INCREMENT as a primary key for all tables.
14 Answers
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Styling multi-line conditions in 'if' statements? [closed]
... after a \ it might not show in your editor, and the code becomes syntactically incorrect.
– Eric O Lebigot
Jan 14 '11 at 10:26
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How to use a variable for the database name in T-SQL?
...ropriate datatype than VARCHAR(255) also should use QUOTENAME to deal with all possible database names (and possibly to prevent SQL injection depending on source of the name)
– Martin Smith
Nov 14 '13 at 11:03
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SQL: How to properly check if a record exists
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I would prefer not use Count function at all:
IF [NOT] EXISTS ( SELECT 1 FROM MyTable WHERE ... )
<do smth>
For example if you want to check if user exists before inserting it into the database the query can look like this:
IF NOT EXISTS ( SELECT 1 ...
Delete with Join in MySQL
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Actually you can use an alias for joined tables, but not for the main table (posts). "DELETE posts FROM posts INNER JOIN projects p ON p.project_id = posts.project_id"
– Weboide
May 29 '12 a...
How to print a dictionary line by line in Python?
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Hmm. I think my problem is even worse than that. Basically I've parsed out some data from an HTML table, and I happened to store it in a dictionary, and now I'm trying to take that dictionary data and put it into a DataFrame before I export it all to an Oracle table....it's pret...