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Disable migrations when running unit tests in Django 1.7
...igrate" command treats
an app as unmigrated, and creates tables directly from the models just
like syncdb did in 1.6. I defined a new settings module just for unit
tests called "settings_test.py", which imports * from the main
settings module and adds this line:
MIGRATION_MODULES = {"my...
What is referential transparency?
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The term "referential transparency" comes from analytical philosophy, the branch of philosophy that analyzes natural language constructs, statements and arguments based on the methods of logic and mathematics. In other words, it is the closest subject outside compute...
Why is MATLAB so fast in matrix multiplication?
... 4.8019e-04
(NB: at some point (I forget when exactly) gpuArray switched from MAGMA to cuBLAS - MAGMA is still used for some gpuArray operations though)
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Slide right to left?
How can I have a div go from collapsed to expanded (and vice versa), but do so from right to left?
15 Answers
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How can I set the default timezone in node.js?
... but their data format is hard to work with. I find it much easier to work from en.wikipedia.org/wiki/List_of_tz_database_time_zones, which is built from the IANA dataset (currently the 2017c version).
– Peter Rust
Apr 25 '18 at 17:44
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Remove blank lines with grep
I tried grep -v '^$' in Linux and that didn't work. This file came from a Windows file system.
14 Answers
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Creating Unicode character from its number
I want to display a Unicode character in Java. If I do this, it works just fine:
13 Answers
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How does password salt help against a rainbow table attack?
...n later "update" it with some salt. You have to take the salt into account from the beginning.
This is the whole reason for why you need a rainbow table in the first place. Because you cannot get to the password from the hash, you precompute all the hashes of the most likely used passwords and then ...
Git - Difference Between 'assume-unchanged' and 'skip-worktree'
...et --hard or the like), it will pretend it has not been, using the version from the index instead. This persists until the index is discarded.
There is a good summary of the ramifications of this difference and the typical use cases here: http://fallengamer.livejournal.com/93321.html .
From that a...
notifyDataSetChanged example
... a lot of resources and garbage collection.)
Create your own class derived from BaseAdapter and ListAdapter that allows changing of the underlying List data structure.
Use the notifyDataSetChanged() every time the list is updated. To call it on the UI-Thread, use the runOnUiThread() of Activity.
The...