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Serializing class instance to JSON
... a limited set of object 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 th...
Fragment over another fragment issue
...stions about how to solve problems about Fragment, you can see my library: https://github.com/JustKiddingBaby/FragmentRigger
FirstFragment firstfragment;
SecondFragment secondFragment;
FragmentManager fm;
FragmentTransaction ft=fm.beginTransaction();
ft.hide(firstfragment);
ft.show(secondFragment)...
Why is @autoreleasepool still needed with ARC?
... 10000 each time round the outer for-loop.
Update:
Also see this answer - https://stackoverflow.com/a/7950636/1068248 - for why @autoreleasepool is nothing to do with ARC.
Update:
I took a look into the internals of what's going on here and wrote it up on my blog. If you take a look there then you...
Random color generator
...#colorpad").css("background-color", getRandomColor());
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="colorpad" style="width:300px;height:300px;background-color:#000">
</div>
<button onclick="setRandomColor()">...
Positioning element at center of screen
...%);
}
Easy! JSFiddle here: http://jsfiddle.net/LgSZV/
Update: Check out https://css-tricks.com/centering-css-complete-guide/ for a fairly exhaustive guide on CSS centering. Adding it to this answer as it seems to get a lot of eyeballs.
...
Left Align Cells in UICollectionView
...ere there are multiple cells of differing widths on a line. According to:
https://developer.apple.com/library/content/documentation/WindowsViews/Conceptual/CollectionViewPGforIOS/UsingtheFlowLayout/UsingtheFlowLayout.html
...
Add context path to Spring Boot application
...h
For more common properties of Spring Boot refer to the link below:
https://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html
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NumPy or Pandas: Keeping array type as integer while having a NaN value
...
This capability has been added to pandas (beginning with version 0.24):
https://pandas.pydata.org/pandas-docs/version/0.24/whatsnew/v0.24.0.html#optional-integer-na-support
At this point, it requires the use of extension dtype Int64 (capitalized), rather than the default dtype int64 (lowercase)....
Response.Redirect with POST instead of Get?
...An example of how it works can be seen in the source to the "kensa" tool:
https://github.com/heroku/kensa/blob/d4a56d50dcbebc2d26a4950081acda988937ee10/lib/heroku/kensa/post_proxy.rb
And can be seen in practice if you turn of javascript. Example page source:
<!DOCTYPE HTML>
<html>
...
CSS background image alt attribute
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@Antoni4 See here: web.archive.org/web/20160728160132/https://developer.yahoo.com/…
– Ian Lunn
Jun 14 '17 at 13:57
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