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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...
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.
...
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...
Saving enum from select in Rails 4.1
...:
f.input :color, :as => :select, :collection => Wine.colors.keys.to_a
Which generated the following HTML:
<select id="wine_color" name="wine[color]">
<option value=""></option>
<option value="red">red</option>
<option value="white">white</option...
Difference between Math.Floor() and Math.Truncate()
...ound cha cha, real smooth... (go to closest side)
Let's go to work! (⌐□_□)
To the left... Math.floor
Take it back now y'all... --
Two hops this time... -=2
Everybody clap your hands ✋✋
How low can you go? Can you go down low? All the way to the floor?
if (this == "wrong")
return "i don...
Rails DB Migration - How To Drop a Table?
...ically, you can see how to drop a table using the following approach:
drop_table :table_name
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