... When you do: User.first.gifts.collect(&:id) You have objects with all fields loaded and you simply get the id thanks to the method based on Enumerable. So: if you only need the id with Rails 4, use ids: User.first.gifts.ids if you only need some fields with Rails 4, use pluck: User.first...

...oduces the output: 10 changed unchanged If obj1 was not a reference at all, then changing obj1.item would have no effect on the obj1 outside of the function. If the argument was a proper reference, then everything would have changed. num would be 100, and obj2.item would read "changed". Instea...

... MSDN has the answer: Choosing Between Classes and Structures. Basically, that page gives you a 4-item checklist and says to use a class unless your type meets all of the criteria. Do not define a structure unless the type has all of the following characteristics: It logica...

This is my first attempt at Android Studio. I installed 0.8.0 and updated to 0.8.2. As soon as a project is created I get the error message: ...

...t has up to 5 items and as little as 3, but it's not dividing the width equally between all the elements. 2 Answers ...

...ct the variable references with a whole new object. You can check this by calling i.object_id before and after i+=1. Why would that be any more technically tricky to do with ++? – Andy_Vulhop Sep 7 '10 at 17:09 ...

... Installing the themes plugin cured the problem and I was back where I was 25 minutes before. – mico Feb 13 '12 at 9:49 ...

..., it's what it means probably most of the time. – butallmj Feb 6 '14 at 20:03 ...

... how can I go to bash?I had problem installing mysql see here superuser.com/questions/377679/… I just know abt it in command line – Nickool Jan 12 '12 at 17:01 ...

...ding to the great compatibility-tables on quirksmode, this is supported by all major browsers! share | improve this answer | follow | ...