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Separation of business logic and data access in django

...that are merely presentational: custom tags and template filters. template.html <h1>Welcome, {{ user|friendly_name }}</h1> template_tags.py @register.filter def friendly_name(user): return remote_api.get_cached_name(user.id) Query methods If your query is not merely presentational,...
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Why does base64 encoding require padding if the input length is not divisible by 3?

...ods. Examples Here is the example form RFC 4648 (http://tools.ietf.org/html/rfc4648#section-8) Each character inside the "BASE64" function uses one byte (base256). We then translate that to base64. BASE64("") = "" (No bytes used. 0%3=0.) BASE64("f") = "Zg==" (One by...
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Understanding REST: Verbs, error codes, and authentication

...L schemas designed suited to your application versus using something like XHTML as your representation, perhaps through microformats and other mechanisms. Both approaches have their place, I think, the XHTML working very well in scenarios that overlap both the human driven and machine driven web, w...
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Bootstrap NavBar with left, center or right aligned items

...enu, not the other way around. This can be accomplished strictly in the HTML by using Bootstrap's "navbar-right" and "navbar-left" for the logos and then "nav-justified" instead of "navbar-nav" for your UL. No addtional CSS needed (unless you want to put the navbar-collapse toggle in the center i...
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What do linkers do?

...xed documented at: http://www.sco.com/developers/gabi/2003-12-17/ch4.reloc.html Each entry tells the linker about one address which needs to be relocated, here we have only one for the string. Simplifying a bit, for this particular line we have the following information: Offset = C: what is the ...
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How do you rotate a two dimensional array?

... I believe this code originates from Peter Norvig: norvig.com/python-iaq.html – Josip Jul 7 '09 at 14:43
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Android Min SDK Version vs. Target SDK Version

... URL: http://developer.android.com/guide/topics/manifest/uses-sdk-element.html share | improve this answer | follow | ...
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Comparison of full text search engine - Lucene, Sphinx, Postgresql, MySQL?

...hich can be used to implement 'did you mean ?' sphinxsearch.com/docs/devel.html#sphinxql-call-suggest – Vinod K Aug 2 '17 at 7:42 ...
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What are deferred objects?

...is when we make calls to a server to fetch some data from a database or an HTML page. If those calls were not asynchronous, the user interface will be stuck waiting for the server to respond. This asynchronous nature leads to a problem when you want to execute things in an order, for example, you wa...
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How can I determine whether a 2D Point is within a Polygon?

... false; } // https://wrf.ecse.rpi.edu/Research/Short_Notes/pnpoly.html bool inside = false; for ( int i = 0, j = polygon.Length - 1 ; i < polygon.Length ; j = i++ ) { if ( ( polygon[ i ].Y > p.Y ) != ( polygon[ j ].Y > p.Y ) && p.X < ( po...