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How to write a simple database engine [closed]

...d for tutorials on the subject and I couldn't find any, so I am hoping someone else can point me in the right direction. Basically, I would like information on the following: ...
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Reading ePub format

I am trying to develop an iPhone application to read ePub files. Is there any framework available to develop this? I have no idea about how to read this file format. I tried to parse a sample file with .epub extension using NSXML Parser, but that fails. ...
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How do you maintain development code and production code? [closed]

...e branches merged in master. dev (or integration branch, or 'next') is the one where the feature branch selected for the next release are tested together maintenance (or hot-fix) branch is the one for the current release evolution/bug fixes, with possible merges back to dev and or master That kind...
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What are some (concrete) use-cases for metaclasses?

...n-interactive plotting, as a frontend to Matplotlib. However, on occasion one wants to do interactive plotting. With only a couple functions I found that I was able to increment the figure count, call draw manually, etc, but I needed to do these before and after every plotting call. So to create ...
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How to delete migration files in Rails 3

...rake db:migrate VERSION=XXX on all environments, to the version before the one I want to delete. Delete the migration file manually. If there are pending migrations (i.e., the migration I removed was not the last one), I just perform a new rake db:migrate again. If your application is already on p...
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How to use LINQ to select object with minimum or maximum property value

...rty. Is there a way to use LINQ to query a list of Person objects for the one with the earliest/smallest DateOfBirth value. ...
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Php multiple delimiters in explode

...effect on system speed, but you preffer to use easiest way for you (To be money effective) – SergeS May 21 '13 at 5:59 9 ...
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How to compare strings in Bash

... And if you do need an else clause and want to make a crazy one-liner: [ "$x" == "valid" ] && echo "valid" || echo "invalid" – Matt White Mar 1 '13 at 13:32 ...
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What are Maven goals and phases and what is their difference?

...ecute all build goals within that build phase. Build goals are assigned to one or more build phases. We can also execute a build goal directly. There are three major built-in Build Life Cycles: default clean site Each Build Lifecycle is Made Up of Phases For example the default lifecycle...
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List vs tuple, when to use each? [duplicate]

...ays for. But I've never quite squared this with the mutability issue mentioned in the other answers. Mutability has teeth to it (you actually can't change a tuple), while homogeneity is not enforced, and so seems to be a much less interesting distinction. ...