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NameError: global name 'xrange' is not defined in Python 3
...ou do know what your are doing and are actively making a Python 2 codebase compatible with Python 3, you can bridge the code by adding the global name to your module as an alias for range. (Take into account that you may have to update any existing range() use in the Python 2 codebase with list(rang...
Cmake vs make sample codes?
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Here is a CMakeLists.txtthat does (almost) exactly the same, with some comments to underline the
similarities to the Makefile:
#CMakeLists.txt
cmake_minimum_required(VERSION 2.8) # stuff not directly
project(example) # related to buil...
UPDATE multiple tables in MySQL using LEFT JOIN
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See the article in my blog for performance details:
Finding incomplete orders: performance of LEFT JOIN compared to NOT IN
Unfortunately, MySQL does not allow using the target table in a subquery in an UPDATE statement, that's why you'll need to stick to less efficient LEFT JOIN synta...
Delete text in between HTML tags in vim?
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Hibernate lazy-load application design
I tend to use Hibernate in combination with Spring framework and it's declarative transaction demarcation capabilities (e.g., @Transactional ).
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Difference between Django's annotate and aggregate methods?
...ias51 that's really related to the original question, so I don't think the comments on an eight-year-old question is the best place to ask. If you want to check when the queries run, then you can check connection.queries. Hint: check whether it's the book = q[0] or ` book.num_authors` that causes th...
How to create a new java.io.File in memory?
...my opinion. However i think that an in-memory filesystem (mentioned in the comments of Andreas’ answer) could also be mentioned, because if you cant for some reason write to the hard-drive, then that could be a way around it.
– FableBlaze
Jan 17 at 12:19
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User recognition without cookies or local storage
...change
Browser Can Change
Browser Cache may be deleted
A Java Applet or Com Object would have been an easy solution using a hash of hardware information, but these days people are so security-aware that it would be difficult to get people to install these kinds of programs on their system. This l...
How to retry after exception?
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This is an excellent example: medium.com/@echohack/…
– Tony Melony
Dec 5 '14 at 12:09
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In-App Billing test: android.test.purchased already owned
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