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Why is `std::move` named `std::move`?

...T>(t) would do). So readers of this code would naturally think: I know how swap is supposed to work (copy to temporary and then exchange the values), but what is the purpose of those ugly casts?! Note also that swap is really just a stand-in for all kinds of permutation-modifying algorithm...
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When to use volatile with multi threading?

...e semantics on volatile variables. [Update for C++11] The C++11 Standard now does acknowledge multithreading directly in the memory model and the lanuage, and it provides library facilities to deal with it in a platform-independant way. However the semantics of volatile still have not changed. v...
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How to compare two dates?

...> from datetime import datetime, timedelta >>> past = datetime.now() - timedelta(days=1) >>> present = datetime.now() >>> past < present True >>> datetime(3000, 1, 1) < present False >>> present - datetime(2000, 4, 4) datetime.timedelta(4242, 757...
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Rails: FATAL - Peer authentication failed for user (PG::Error)

...s=# create database "dcaclab_development" owner "guy_on_stackoverflow"; Now update your database.yml file after you've confirmed creating the database, user, password and set these privileges. Don't forget host: localhost. ...
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Does Java have a using statement?

... "Luckily" with Java 7 being available now, this answer is no longer true (and I think that ARM blocks are exactly what using does). – Joachim Sauer Aug 24 '11 at 8:32 ...
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Moving Files into a Real Folder in Xcode

...o them to match what you did in step 1. All the references in Xcode should now be red (that's OK!). From the Identity and Type manager, select the Group in Xcode that you want to relocate, then click the folder icon from the info pane: In the Finder selection dialog, locate the equivalent new fol...
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Kotlin secondary constructor

... Update: Since M11 (0.11.*) Kotlin supports secondary constructors. For now Kotlin supports only primary constructors (secondary constructors may be supported later). Most use cases for secondary constructors are solved by one of the techniques below: Technique 1. (solves your case) Define a fa...
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How accurate is python's time.sleep()?

... also running the code on Mac and Windows, so I probably got confused. I know windows XP at least has a tick rate of about 10ms. – Joseph Lisee Aug 11 '10 at 15:55 ...
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Integrated Markdown WYSIWYG text editor

...e the answer. I've been searching for something just like this for a month now. I'm surprised that this does not show up higher in search results. I had to go through a notice on lepture/editor to find this. share ...
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Xcode 6 - How to pick signing certificate/provisioning profile for Ad-Hoc distribution?

... I wish I had learned 3 hours earlier that xcodebuild can now also export to ipa format! I wasted that much time trying to get xcrun to embed a given provisioning profile, but it just won't work on Xcode 6. xcodebuild does! Thank you. – Oscar Hierro ...