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How do I rename a column in a SQLite database table?
...ts. Warning: misuse of this pragma can easily result in a corrupt database file.
alter table
SQLite supports a limited subset of ALTER TABLE. The ALTER TABLE command in SQLite allows the user to rename a table or to add a new column to an existing table. It is not possible to rename a column, remov...
Amazon S3 CORS (Cross-Origin Resource Sharing) and Firefox cross-domain font loading
...serve everything other than webfonts through CloudFront and serve the font files directly from S3. Sadly, the querystring hack isn't really practical in our application without more significant refactoring, as the assets are all served through the Rails asset pipeline, and there's no convenient way ...
Android layout replacing a view with another view on run time
I have a xml -layout file main with two textviews A/B and a view C.
I have two other xml -layout files option1 and option2 .
Is it possible to load either option1 or option2 in run time via Java into C? If so, what function do I have to use?
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How do you create a random string that's suitable for a session ID in PostgreSQL?
...er the probability of a Version 4 UUID collision is negligible, consider a file containing 2.3 quintillion Version 4 UUIDs, with a 50% chance of containing one UUID collision. It would be 36 exabytes in size, assuming no other data or overhead, thousands of times larger than the largest databases cu...
warning about too many open figures
... = os.path.join(path, figname)
plt.savefig(dest) # write image to file
plt.clf()
print('Done.')
main()
To avoid the warning, I have to pull the call to subplots() outside the loop. In order to keep seeing the rectangles, I need to switch clf() to cla(). That clears the axis w...
How to extract a string using JavaScript Regex?
I'm trying to extract a substring from a file with JavaScript Regex. Here is a slice from the file :
5 Answers
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How to convert JSON to CSV format and store in a variable
...convert this data using JavaScript in CSV format and save it in JavaScript file?
16 Answers
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Input from the keyboard in command line application
... solution is as follows:
func input() -> String {
var keyboard = NSFileHandle.fileHandleWithStandardInput()
var inputData = keyboard.availableData
return NSString(data: inputData, encoding:NSUTF8StringEncoding)!
}
More recent versions of Xcode need an explicit typecast (works in Xc...
How do you find the current user in a Windows environment?
...batch and other in Windows environments.
Another option is to use %USERPROFILE% to get the user's path, like C:\Users\username.
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Using the scrollwheel in GNU screen
...(I'm using Ubuntu's GNOME terminal). I fixed it by going to Edit -> Profile Preferences -> Scrolling, and unchecking "Use keystrokes to scroll on alternate screen". Note that I still needed to use Pistos's fix.
– Michael Krebs
Mar 11 '11 at 2:19
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