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How to use HTML Agility pack

...I had no trouble using it with help from this XPath documentation: https://www.w3schools.com/xml/xpath_syntax.asp To parse <h2> <a href="">Jack</a> </h2> <ul> <li class="tel"> <a href="">81 75 53 60</a> </li> </ul> <h2> ...
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How to write a simple database engine [closed]

... I would suggest focusing on www.sqlite.org It's recent, small (source code 1MB), open source (so you can figure it out for yourself)... Books have been written about how it is implemented: http://www.sqlite.org/books.html It runs on a variety of ope...
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How to draw polygons on an HTML5 canvas?

... from http://www.scienceprimer.com/drawing-regular-polygons-javascript-canvas: The following code will draw a hexagon. Change the number of sides to create different regular polygons. var ctx = document.getElementById('hexagon').get...
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Convert light frequency to RGB?

... Here's a detailed explanation of the entire conversion process: http://www.fourmilab.ch/documents/specrend/. Source code included! share | improve this answer | follow ...
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Face recognition Library [closed]

...assification. You can see a HTML version of the documentation at: http://www.bytefish.de/dev/libfacerec/ If you want to understand how those algorithms work, you might want to read my Guide To Face Recognition (includes Python and GNU Octave/MATLAB examples): http://www.bytefish.de/blog/face_r...
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Is there a Boolean data type in Microsoft SQL Server like there is in MySQL? [duplicate]

... on three valued logic- Example of three valued logic in SQL Server http://www.firstsql.com/idefend3.htm https://www.simple-talk.com/sql/learn-sql-server/sql-and-the-snare-of-three-valued-logic/ share | ...
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What Android tools and methods work best to find memory/resource leaks? [closed]

... Get the Eclipse Memory Analyzer ( http://www.eclipse.org/mat/) Check http://kohlerm.blogspot.com/2010/02/android-memory-usage-analysis-slides.html and http://kohlerm.blogspot.com/search/label/memory ...
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How to print register values in GDB?

.../f.osdev.org/viewtopic.php?f=1&t=25968 || 2005 feature request https://www.sourceware.org/ml/gdb/2005-03/msg00158.html || alt.lang.asm 2013 https://groups.google.com/forum/#!topic/alt.lang.asm/JC7YS3Wu31I ARM floating point registers See: https://reverseengineering.stackexchange.com/questions/...
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How to pass payload via JSON file for curl?

... curl sends POST requests with the default content type of application/x-www-form-urlencoded. If you want to send a JSON request, you will have to specify the correct content type header: $ curl -vX POST http://server/api/v1/places.json -d @testplace.json \ --header "Content-Type: application/jso...
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What's the “Content-Length” field in HTTP header?

...ripts. In this case, the Content-Type: header is usually application/x-www-form-urlencoded, and the Content-Length: header gives the length of the URL-encoded form data (here's a note on URL-encoding). The CGI script receives the message body through STDIN, and decodes it. Here's a...