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What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?

... prevent N+1 selects. Reference: Java Persistence with Hibernate, chapter 13. share | improve this answer | follow | ...
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What are five things you hate about your favorite language? [closed]

... 1 2 3 4 5 … 7 Next 182 votes ...
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Finding the author of a line of code in Mercurial

... 123 On the command-line, you'd want to use hg annotate -u (-u can be combined with -n to get the loc...
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How to plot multiple functions on the same figure, in Matplotlib?

How can I plot the following 3 functions (i.e. sin , cos and the addition), on the domain t , in the same figure? 3 Ans...
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Convert datetime to Unix timestamp and convert it back in python

I have dt = datetime(2013,9,1,11) , and I would like to get a Unix timestamp of this datetime object. 11 Answers ...
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Run an app on a multiple devices automatically in Android Studio

... 305 This is almost too easy, actually. When you see the list of devices come up after launching th...
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When to use the brace-enclosed initializer?

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How to escape a JSON string to have it in a URL?

... answered Jul 24 '11 at 13:55 Delan AzabaniDelan Azabani 70.4k2222 gold badges154154 silver badges189189 bronze badges ...
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Immediate function invocation syntax

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Why does UITableViewCell remain highlighted?

... 263 In your didSelectRowAtIndexPath you need to call deselectRowAtIndexPath to deselect the cell. S...