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Find all files in a directory with extension .txt in Python
...hat, PEP8 recommends appending a single underscore to such names, i.e. file_, which you'd have to agree is still quite readable.
– martineau
Oct 14 '12 at 19:04
9
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qmake: could not find a Qt installation of ''
...e to list qt4 when asked directly.
This made everything better:
export QT_SELECT=qt4
qtchooser then knew to use qmake-qt4, and so on.
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How to print matched regex pattern using awk?
...Relevant manual page: https://www.gnu.org/software/sed/manual/sed.html#Back_002dreferences-and-Subexpressions
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How to get nice formatting in the Rails console
...ease of Ruby 2.0.0.
For rails 4/ruby 2 you could use just
puts object.to_yaml
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iPhone : How to detect the end of slider drag?
...mething like this in your viewWillAppear (or wherever it fits you) call:
[_mySlider addTarget:self
action:@selector(sliderDidEndSliding:)
forControlEvents:(UIControlEventTouchUpInside | UIControlEventTouchUpOutside)];
The receiving method would look like this:
- (void)sliderDi...
Returning JSON from a PHP Script
...you're serializing **/;
header('Content-Type: application/json');
echo json_encode($data);
If I'm not using a particular framework, I usually allow some request params to modify the output behavior. It can be useful, generally for quick troubleshooting, to not send a header, or sometimes print_r t...
How to load db:seed data into test database automatically?
...d the data.
load "#{Rails.root}/db/seeds.rb"
# or
Rails.application.load_seed
Where to place that depends on what testing framework you are using and whether you want it to be loaded before every test or just once at the beginning. You could put it in a setup call or in a test_helper.rb file.
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How to get Erlang's release version number from a shell?
...
erl -eval 'erlang:display(erlang:system_info(otp_release)), halt().' -noshell
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Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers
...es
edit: as in the @joris comment, you may need to change above to np.int_(data[1:,1:]) to have correct data type.
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SQL DROP TABLE foreign key constraint
...this SQL (if you're on SQL Server 2005 and up):
SELECT *
FROM sys.foreign_keys
WHERE referenced_object_id = object_id('Student')
and if there are any, with this statement here, you could create SQL statements to actually drop those FK relations:
SELECT
'ALTER TABLE [' + OBJECT_SCHEMA_NAME...