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How exactly do Django content types work?

..., now we're going to take a close look at our models and rework them to be more "reusable" and intuitive. Let's start by getting rid of the two foreign keys on our Comment model and replace them with a GenericForeignKey. # ourapp.models from django.contrib.contenttypes.fields import GenericForeign...
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Const before or const after?

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How to estimate a programming task if you have no experience in it [closed]

...ve is to ask for time to knock up a quick prototype to allow you to give a more accurate estimate. Without some experience with a tool or a problem, any estimate you give is essentially meaningless. As an aside, there is very rarely a problem with giving too long an estimate. Unanticipated problems...
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Optimising Android application before release [closed]

... Track and squash allocations. The more you allocate, the more often the garbage collector will need to run, stopping your process from doing anything else for relatively long periods of time, such as 100ms or so. The best tool I know for this is the Allocat...
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How do you assert that a certain exception is thrown in JUnit 4 tests?

...et(0); } Though answer https://stackoverflow.com/a/31826781/2986984 has more options for JUnit <= 4.12. Reference : JUnit Test-FAQ share | improve this answer | fo...
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How to validate an email address in JavaScript

...Some simple cases it doesn't match a\@b@c.com, a(b)@c.com. See the RFC for more. Here's a regex that won't reject any valid addresses [^@]+@[^@]+\.[^@]+ and protects against common errors. – Vroo Oct 26 '12 at 6:32 ...
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How to retry after exception?

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What is the correct answer for cout

...1. See P0145R3 Refining Expression Evaluation Order for Idiomatic C++ for more details. share | improve this answer | follow | ...
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Import package.* vs import package.SpecificType [duplicate]

...ific type (i.e. import java.lang.ClassLoader )? Would the second one be a more advisable way to use than the other one? 10...
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Is there any reason to use a synchronous XMLHttpRequest?

... I think they might become more popular as HTML 5 standards progress. If a web application is given access to web workers, I could foresee developers using a dedicated web worker to make synchronous requests for, as Jonathan said, to ensure one reques...