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How to pass a variable from Activity to Fragment, and pass it back?
... data), you need to use interfaces. The way you can do this is explained really good in the documentation tutorial of communication between fragments. Because all fragments communicate between each other through the activity, in this tutorial you can see how you can send data from the actual fragmen...
Python call function within class
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Since these are member functions, call it as a member function on the instance, self.
def isNear(self, p):
self.distToPoint(p)
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How to prevent sticky hover effects for buttons on touch devices
...dea is interesting, but I found it a bit jerky and not widely supported on all touch devices. I would prefer a less invasive solution based on touch support detection and pure css like this stackoverflow.com/a/39787268/885464
– Lorenzo Polidori
Sep 30 '16 at 8:...
SQLite INSERT - ON DUPLICATE KEY UPDATE (UPSERT)
...f some other process inserted in between.
– Robin Lavallée
Aug 12 at 15:31
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Populating a database in a Laravel migration file
...anges consistently so that you can for example deploy to staging, see that all is well, and then deploy to production with confidence of the same results (and not have to remember to run some manual step).
However, there is still value in separating out the seed and the migration as those are two r...
Python argparse command line flags without arguments
...a look at http://docs.python.org/dev/library/argparse.html#action (specifically store_true and store_false)
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('-w', action='store_true')
where action='store_true' implies default=False.
Conversely, you could haveaction='store_...
How to get and set the current web page scroll position?
... This answer is not accurate as the scrollTop property doesn't work on all browsers. Check window.pageXOffset and window.pageYOffset for better results.
– gyo
Nov 26 '15 at 10:57
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Difference between scaling horizontally and vertically for databases [closed]
...ses and scalability is one of them. What is the difference between horizontally and vertically scaling these databases?
10 ...
How to select an element by classname using jqLite?
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Essentially, and as-noted by @kevin-b:
// find('#id')
angular.element(document.querySelector('#id'))
//find('.classname'), assumes you already have the starting elem to search from
angular.element(elem.querySelector('.classname'))...
Are iframes considered 'bad practice'? [closed]
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As with all technologies, it has its ups and downs. If you are using an iframe to get around a properly developed site, then of course it is bad practice. However sometimes an iframe is acceptable.
One of the main problems with an ...