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Should I use the datetime or timestamp data type in MySQL?
...stamp or a native MySQL datetime field, go with the native format. You can do calculations within MySQL that way
("SELECT DATE_ADD(my_datetime, INTERVAL 1 DAY)") and it is simple to change the format of the value to a UNIX timestamp ("SELECT UNIX_TIMESTAMP(my_datetime)") when you query the record i...
Can I use jQuery with Node.js?
Is it possible to use jQuery selectors/DOM manipulation on the server-side using Node.js?
21 Answers
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How to calculate the angle between a line and the horizontal axis?
...f a directed line segment, not a "line", since lines extend infinitely and don't start at a particular point).
deltaY = P2_y - P1_y
deltaX = P2_x - P1_x
Then calculate the angle (which runs from the positive X axis at P1 to the positive Y axis at P1).
angleInDegrees = arctan(deltaY / deltaX) * 1...
Common CSS Media Queries Break Points [duplicate]
...rticular layout instead. That is, gradually narrow your desktop browser window and observe the natural breakpoints for your content. It's different for every site. As long as the design flows well at each browser width, it should work pretty reliably on any screen size (and there are lots and lots ...
What's the difference between a mock & stub?
...bing in testing, including Martin Fowler's Mocks Aren't Stubs , but still don't understand the difference.
39 Answers
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Abstract classes in Swift Language
... it has been cast to an Employee, it calls the original implementation (it doesn't not dynamically dispatch to the overridden version even though the instance is actually a Software Engineer.
For more information, check great WWDC video about that feature: Building Better Apps with Value Types in S...
What are “Groovy” and “Grails” and what kinds of applications are built using them?
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What is Groovy on Grails?
It doesn't exist under this name anymore. It's simply called Grails now.
What is Groovy?
Originally, a dynamic language for the JVM. However, since Groovy 2.0, both static and dynamic typing are supported.
What is Grails?
Grai...
List directory tree structure in python?
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Here's a function to do that with formatting:
import os
def list_files(startpath):
for root, dirs, files in os.walk(startpath):
level = root.replace(startpath, '').count(os.sep)
indent = ' ' * 4 * (level)
print('{}{}...
Specifying Style and Weight for Google Fonts
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this is partial truth, and is because if you dont assing the weight on the link css google wont download the proper "bold" format to achieve this you have to declare the "link href" as follow: <link href='fonts.googleapis.com/css?family=Comfortaa:400,700' rel='style...
Automatic creation date for Django model form objects?
... a non-nullable field 'created_at' to gameuser without a default; we can't do that (the database needs something to populate existing rows). Please select a fix: 1) Provide a one-off default now (will be set on all existing rows) 2) Quit, and let me add a default in models.py Select an option: 1 P...