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How can I measure the similarity between two images? [closed]

...images with a text added vs. another without mirrored images The easiest and simplest algorithm I've seen for this is just to do the following steps to each image: scale to something small, like 64x64 or 32x32, disregard aspect ratio, use a combining scaling algorithm instead of nearest pixel sc...
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Why are exclamation marks used in Ruby methods?

...oo # prints modified foo This will output: a string In the standard libraries, there are a lot of places you'll see pairs of similarly named methods, one with the ! and one without. The ones without are called "safe methods", and they return a copy of the original with changes applied...
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Parsing JSON Object in Java [duplicate]

... now you can change the return type of the parseJson and getArray to String and add them into an ArrayList which you can later iterate over to get the required data :) – Code Jul 1 '13 at 9:50 ...
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Forward declaration of a typedef in C++

... OP wants to accomplish using your trick above. – j_random_hacker Apr 30 '09 at 7:30 9 But be awa...
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Is there a ceiling equivalent of // operator in Python?

... There is no operator which divides with ceil. You need to import math and use math.ceil share | improve this answer | follow | ...
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What is memoization and how can I use it in Python?

I just started Python and I've got no idea what memoization is and how to use it. Also, may I have a simplified example? ...
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Real world use cases of bitwise operators [closed]

...ets Always involves checksums, parity, stop bits, flow control algorithms, and so on, which usually depend on the logic values of individual bytes as opposed to numeric values, since the medium may only be capable of transmitting one bit at a time. Compression, Encryption Both of these are heavily d...
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What is the Difference Between Mercurial and Git?

I've been using git for some time now on Windows (with msysGit) and I like the idea of distributed source control. Just recently I've been looking at Mercurial (hg) and it looks interesting. However, I can't wrap my head around the differences between hg and git. ...
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How do I parse JSON with Objective-C?

...m new to iPhone. Can anyone tell me the steps to follow to parse this data and get the activity details, first name, and last name? ...
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Creating a temporary directory in Windows?

... get a temp directory name in Windows? I see that I can use GetTempPath and GetTempFileName to create a temporary file, but is there any equivalent to the Linux / BSD mkdtemp function for creating a temporary directory? ...