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How can I group by date time column without taking time into consideration
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383
Cast/Convert the values to a Date type for your group by.
GROUP BY CAST(myDateTime AS DATE)
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What is a plain English explanation of “Big O” notation?
... example of Big-O I can think of is doing arithmetic. Take two numbers (123456 and 789012). The basic arithmetic operations we learned in school were:
addition;
subtraction;
multiplication; and
division.
Each of these is an operation or a problem. A method of solving these is called an algori...
Using git, how do I ignore a file in one branch but have it committed in another branch?
...hat I'm deploying to Heroku . The source code tree includes a bunch of mp3 files (the website will be for a recording project I was heavily involved with).
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How to delete all datastore in Google App Engine?
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answered Jun 30 '09 at 8:55
JohnIdolJohnIdol
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Troubleshooting BadImageFormatException
...assant
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Serializing class instance to JSON
... types by default, all built-in types. List here: https://docs.python.org/3.3/library/json.html#encoders-and-decoders
One good solution would be to make your class inherit from JSONEncoder and then implement the JSONEncoder.default() function, and make that function emit the correct JSON for your ...
Differences between lodash and underscore [closed]
...o Underscore, in part because Lo-Dash is responsible for raising more than 30 issues; landing bug fixes, new features, & perf gains in Underscore v1.4.x+.
In addition there are at least 3 Backbone boilerplates that include Lo-Dash by default and Lo-Dash is now mentioned in Backbone’s official...
What is the Java string pool and how is “s” different from new String(“s”)? [duplicate]
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153
The string pool is the JVM's particular implementation of the concept of string interning:
I...
WAMP/XAMPP is responding very slow over localhost
...P6\Parameters
Right click on Parameters, expand New, and select DWORD (32-bit) Value
Enter DisabledComponents into the Name field
Double click on the new DisabledComponents value, enter ffffffff into the Value data dialog box, and click the OK button
Confirm the new registry value conta...
How do I check that multiple keys are in a dict in a single pass?
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370
Well, you could do this:
>>> if all (k in foo for k in ("foo","bar")):
... print...