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SecurityError: Blocked a frame with origin from accessing a cross-origin frame
...her answer I've found 1, 2, suggests that CORS/Access-Control-Allow-Origin does not apply to iFrames, only to XHRs, Fonts, WebGL and canvas.drawImage. I believe postMessage is the only option.
– snappieT
Jan 14 '15 at 12:12
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What's a correct and good way to implement __hash__()?
...s, the hash collides with that of the tuple of its key members. Maybe this does not matter very often in practice?
Update: the Python docs now recommend to use a tuple as in the example above. Note that the documentation states
The only required property is that objects which compare equal have...
Difference between Bridge pattern and Adapter pattern
...cuses on
resolving incompatibilities between two existing interfaces. It doesn't focus on how
those interfaces are implemented, nor does it consider how they might evolve independently. It's a way of making two independently designed classes work together
without reimplementing one or the othe...
What's the difference between a Python “property” and “attribute”?
...gs to see if it has a __get__, __set__, or __delete__ method — if it does, it's a property. If it is a property, instead of just returning the eggs object (as it would for any other attribute) it will call the __get__ method (since we were doing lookup) and return whatever that method returns...
Using member variable in lambda capture list inside a member function
...tializer syntax works for this (i.e. in C++14 just doing [&grid] still doesn't work). Very glad to know this!
– ohruunuruus
Feb 10 '17 at 15:53
1
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What's the difference between the various methods to get a Context?
... how would one access the context object inside of a class that does not extend Activity?
– Cole
Apr 19 '11 at 20:23
1
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How can I combine flexbox and vertical scroll in a full-height app?
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Using min-heightin Chrome does not work, it affects the size of the footer somehow. Using height however, gives the desired result.
– phant0m
Jun 25 '15 at 21:58
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MongoDB vs. Cassandra [closed]
...based storage engine, but more because of the multi-granularity locking it does.
For analytics, MongoDB provides a custom map/reduce implementation; Cassandra provides native Hadoop support, including for Hive (a SQL data warehouse built on Hadoop map/reduce) and Pig (a Hadoop-specific analysis lan...
Creating Threads in python
...all the base threading.Thread.__init__()?
After starting the two threads, does the main thread continue to do work indefinitely/block/join on the child threads so that main thread execution does not end before the child threads complete their tasks?
And finally, are you getting any unhandled excep...
What's the recommended approach to resetting migration history using Django South?
... change it
to reflect @hobs approach (which is just as convenient, but doesn't
affect other apps) - thanks! – chrisv Mar 26 '13 at 9:09
Accepted answer follows below:
First, an answer by the South author:
As long as you take care to do it on all deployments simultaneously, t...