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Simple Digit Recognition OCR in OpenCV-Python

I am trying to implement a "Digit Recognition OCR" in OpenCV-Python (cv2). It is just for learning purposes. I would like to learn both KNearest and SVM features in OpenCV. ...
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In Functional Programming, what is a functor?

I've come across the term 'Functor' a few times while reading various articles on functional programming, but the authors typically assume the reader already understands the term. Looking around on the web has provided either excessively technical descriptions (see the Wikipedia article ) or incred...
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Fastest way to flatten / un-flatten nested JSON objects

...SON objects. It works, but it's a bit slow (triggers the 'long script' warning). 13 Answers ...
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Can git undo a checkout of unstaged files

I accidentially discard my changes on files in my local working tree via git checkout. The files aren't staged at this time. Is it posible to "undo" this checkout? ...
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Why doesn't indexOf work on an array IE8?

The below function works fine on Opera, Firefox and Chrome. However, in IE8 it fails on the if ( allowed.indexOf(ext[1]) == -1) part. ...
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What are the First and Second Level caches in Hibernate?

Can anyone explain in simple words what First and Second Level caching in Hibernate are? 7 Answers ...
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Double Negation in C++

... I think cast it explicitly with (bool) would be clearer, why use this tricky !!, because it is of less typing? – Baiyan Huang Mar 29 '10 at 3:39 ...
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How to draw a path on a map using kml file?

Can I parse kml file in order to display paths or points in Android? Please could you help me with that? 4 Answers ...
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using facebook sdk in Android studio

I'm following Facebook SDK for Android using Android Studio . When I run my application I'm getting the below mentioned warning. ...
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Setting up connection string in ASP.NET to SQL SERVER

I'm trying to set up a connecting string in my web.config file (Visual Studio 2008/ASP.NET 3.5) to a local server (SQL server 2008). ...