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Get User's Current Location / Coordinates
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230
To get a user's current location you need to declare:
let locationManager = CLLocationManager()...
How to check if command line tools is installed
I have a macbook pro with OS X 10.8.2.
XCode is installed. I know this as it appears in the Applications directory.
There are also the xcodebuild and xcode-select files in /usr/bin
I need to know if the command line tools is installed.
Is there a command for it?
What can I do to see if XCode CLT is ...
How do I parse XML in Python?
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edited Dec 13 '19 at 0:39
Mig B
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answered Dec 16 ...
Is there a rule-of-thumb for how to divide a dataset into training and validation sets?
...for how to best divide data into training and validation sets? Is an even 50/50 split advisable? Or are there clear advantages of having more training data relative to validation data (or vice versa)? Or is this choice pretty much application dependent?
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py2exe - generate single executable file
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106
PyInstaller will create a single .exe file with no dependencies; use the --onefile option. It d...
When to use an object instance variable versus passing an argument to the method
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answered Dec 6 '08 at 10:45
TomTom
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Ruby custom error classes: inheritance of the message attribute
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StefanStefan
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UIBarButtonItem with custom image and no border
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answered Apr 21 '10 at 8:47
VladimirVladimir
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Loop backwards using indices in Python?
I am trying to loop from 100 to 0. How do I do this in Python?
15 Answers
15
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Simple way to calculate median with MySQL
...um+1 as `row_number`, @total_rows:=@rownum
FROM data d, (SELECT @rownum:=0) r
WHERE d.val is NOT NULL
-- put some where clause here
ORDER BY d.val
) as dd
WHERE dd.row_number IN ( FLOOR((@total_rows+1)/2), FLOOR((@total_rows+2)/2) );
Steve Cohen points out, that after the first pass, @rown...