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How to fix getImageData() error The canvas has been tainted by cross-origin data?
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As others have said you are "tainting" the canvas by loading from a cross origins domain.
https://developer.mozilla.org/en-US/docs/HTML/CORS_Enabled_Image
However, you may be able to prevent this by simply setting:
img.crossOrigin = "Anonymous";
This only works if the remote serve...
Can I redirect the stdout in python into some sort of string buffer?
...nt to redirect stdout to an object which I'll be able to read the output from.
9 Answers
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What are Long-Polling, Websockets, Server-Sent Events (SSE) and Comet?
...assic HTTP web traffic first.
Regular HTTP:
A client requests a webpage from a server.
The server calculates the response
The server sends the response to the client.
Ajax Polling:
A client requests a webpage from a server using regular HTTP (see HTTP above).
The client receives the reques...
mongodb, replicates and error: { “$err” : “not master and slaveOk=false”, “code” : 13435 }
...t "slave okay" mode to let the mongo shell know that you're allowing reads from a secondary. This is to protect you and your applications from performing eventually consistent reads by accident. You can do this in the shell with:
rs.slaveOk()
After that you can query normally from secondaries.
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Using global variables between files?
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The problem is you defined myList from main.py, but subfile.py needs to use it. Here is a clean way to solve this problem: move all globals to a file, I call this file settings.py. This file is responsible for defining globals and initializing them:
# settin...
Android update activity UI from service
...ground operations even when no
Activity is running, also start the service from the Application
class so that it does not get stopped when unbound.
The advantages I have found in this approach compared to the startService()/LocalBroadcast technique are
No need for data objects to implement Parce...
Java: Date from unix timestamp
...already had milliseconds, then just new java.util.Date((long)timeStamp);
From the documentation:
Allocates a Date object and
initializes it to represent the
specified number of milliseconds since
the standard base time known as "the
epoch", namely January 1, 1970,
00:00:00 GMT.
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Benefits of prototypal inheritance over classical?
...yping; but for the life of me can't figure out what benefits are to be had from object instances using other instances for inheritance.
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How do I perform HTML decoding/encoding using Python/Django?
...LParser()
unescaped = html_parser.unescape(my_string)
# >= Python 3.5:
from html import unescape
unescaped = unescape(my_string)
As a suggestion: it may make more sense to store the HTML unescaped in your database. It'd be worth looking into getting unescaped results back from BeautifulSoup i...
How to use timeit module
...he min() rather than the average of the timings. That is a recommendation from me, from Tim Peters, and from Guido van Rossum. The fastest time represents the best an algorithm can perform when the caches are loaded and the system isn't busy with other tasks. All the timings are noisy -- the fast...