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How to turn on line numbers in IDLE?
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Version 3.8 or newer:
To show line numbers in the current window, go to Options and click Show Line Numbers.
To show them automatically, go to Options > Configure IDLE > General and check the Show line numbers in new windows bo...
How to toggle a value in Python
...simple and fast way to toggle values:
>>> A = 5
>>> B = 3
>>> total = A + B
>>> x = A
>>> x = total - x # toggle
>>> x
3
>>> x = total - x # toggle
>>> x
5
>>> x = total - x # toggle
>>> x
3
Solutio...
How can you use optional parameters in C#?
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23 Answers
23
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Bootstrap combining rows (rowspan)
... height:25px;
}
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" />
<div class="container">
<h1>Responsive Bootstrap</h1>
<div class="row">
<div class="col-lg-5 col-md-5 col-sm-5 col-xs-5" style="back...
Why does git perform fast-forward merges by default?
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edited May 23 '17 at 12:10
Community♦
111 silver badge
answered May 17 '10 at 15:31
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Android RatingBar change star colors [closed]
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31 Answers
31
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How to print without newline or space?
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In Python 3, you can use the sep= and end= parameters of the print function:
To not add a newline to the end of the string:
print('.', end='')
To not add a space between all the function arguments you want to print:
print('a', 'b'...
How to destroy an object?
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edited Jun 20 '16 at 0:36
Jeff Puckett
25k1212 gold badges8989 silver badges142142 bronze badges
answ...
ORDER BY the IN value list
I have a simple SQL query in PostgreSQL 8.3 that grabs a bunch of comments. I provide a sorted list of values to the IN construct in the WHERE clause:
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Determine what attributes were changed in Rails after_save callback?
...nd
end
Or if you prefer, saved_change_to_attribute?(:published).
Rails 3–5.1
Warning
This approach works through Rails 5.1 (but is deprecated in 5.1 and has breaking changes in 5.2). You can read about the change in this pull request.
In your after_update filter on the model you can...