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Checking images for similarity with OpenCV
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This is a huge topic, with answers from 3 lines of code to entire research magazines.
I will outline the most common such techniques and their results.
Comparing histograms
One of the simplest & fastest methods. Proposed decades ago as a means to find picture s...
How to order results with findBy() in Doctrine
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3 Answers
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Convert a list to a dictionary in Python
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from itertools import izip
i = iter(a)
b = dict(izip(i, i))
In Python 3 you could also use a dict comprehension, but ironically I think the simplest way to do it will be with range() and len(), which would normally be a code smell.
b = {a[i]: a[i+1] for i in range(0, len(a), 2)}
So the iter(...
Post JSON using Python Requests
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1123
As of Requests version 2.4.2 and onwards, you can alternatively use 'json' parameter in the call...
Chrome browser reload options new feature
... do it I get these three awesome options.
1. Normal Reload
2. Hard Reload
3. Empty Cache and Hard Reload (this is very useful option I believe)
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Auto-loading lib files in Rails 4
...zers/require.rb:
require "#{Rails.root}/lib/extensions"
P.S.
Rails 3 Autoload Modules/Classes by Bill Harding.
And to understand what does Rails exactly do about auto-loading?
read Rails autoloading — how it works, and when it doesn't by Simon Coffey.
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ansible: lineinfile for several lines?
... = 2097152' }
- { regexp: '^kernel.shmmax', line: 'kernel.shmmax = 134217728' }
- { regexp: '^fs.file-max', line: 'fs.file-max = 65536' }
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R data formats: RData, Rda, Rds etc
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answered Jan 26 '14 at 22:53
KenMKenM
2,39811 gold badge1010 silver badges1313 bronze badges
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How do I update the GUI from another thread?
...ControlPropertyThreadSafe(myLabel, "Text", status);
If you're using .NET 3.0 or above, you could rewrite the above method as an extension method of the Control class, which would then simplify the call to:
myLabel.SetPropertyThreadSafe("Text", status);
UPDATE 05/10/2010:
For .NET 3.0 you shoul...
How to change a git submodule to point to a subfolder?
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3 Answers
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