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MySQL ON DUPLICATE KEY UPDATE for multiple rows insert in single query
... What if you want to update few columns? Replace will update all.
– imVJ
Sep 9 '16 at 10:27
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Using headers with the Python requests library's get method
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According to the api, the headers can all be passed in using requests.get:
r=requests.get("http://www.example.com/", headers={"content-type":"text"})
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What are the best practices for SQLite on Android?
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Inserts, updates, deletes and reads are generally OK from multiple threads, but Brad's answer is not correct. You have to be careful with how you create your connections and use them. There are situations where your update calls will fail, even if your database doesn'...
Shell script “for” loop syntax
...D based) with #!/bin/sh and it worked fine. Invoked under bash and specifically under /bin/sh, still worked. Maybe the version of sh matters? Are you on some old Unix?
– system PAUSE
Mar 26 '12 at 21:29
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For i = 0, why is (i += i++) equal to 0?
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i + 1; // Note that you are discarding the calculation result
What actually happens is more involved than that - take a look at MSDN, 7.5.9 Postfix increment and decrement operators:
The run-time processing of a postfix increment or decrement operation of the form x++ or x-- consists of the ...
How do I sort a dictionary by value?
...(x.items(), key=operator.itemgetter(0))
In Python3 since unpacking is not allowed [1] we can use
x = {1: 2, 3: 4, 4: 3, 2: 1, 0: 0}
sorted_x = sorted(x.items(), key=lambda kv: kv[1])
If you want the output as a dict, you can use collections.OrderedDict:
import collections
sorted_dict = collection...
What are the parameters sent to .fail in jQuery?
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According to http://api.jquery.com/jQuery.ajax/ the fail callback should be getting:
jqXHR, textStatus, errorThrown
same as error, but error is deprecated:
Deprecation Notice: The jqXHR.success(), jqXHR.error(), and jqXHR.complete() callbacks will be deprecated in jQuery 1.8...
Set opacity of background image without affecting child elements
...downvotes. If I could upvote this twice I would. A child element of a partially opaque parent element is going to be partially opaque, and should be. All "workarounds" are bugs that should eventually be fixed.
– RobW
Nov 28 '12 at 21:17
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Sublime Text 3 how to change the font size of the file sidebar?
...he Package "Theme-Default", the font size of the editor does not change at all. Is there anything different in sublime text3？
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What is the method for converting radians to degrees?
I run into this occasionally and always forget how to do it.
12 Answers
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