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64-bit version of Boost for 64-bit windows
...bit boost libraries in the same hierarchy (which is I suspect a common use case):
Build the win32 binaries
bjam --toolset=msvc-9.0 --build-type=complete stage
Create the directory lib\win32
Move the contents of stage\lib to lib\win32
Remove the directories bin.v2 and stage
Build the x64 binaries...
Using @include vs @extend in Sass?
In Sass, I can't quite discern the difference between using @include with a mixin and using @extend with a placeholder class. Don't they amount to the same thing?
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SQL - many-to-many table primary key
...the referenced tables are unique) and a separate index on (col2,col1) will catch those cases where the opposite order would execute faster. The surrogate is a waste of space.
You won't need indexes on the individual columns since the table should only ever be used to join the two referenced tables ...
Why is a 3-way merge advantageous over a 2-way merge?
...way merge, and often times doesn't need user intervention. Why is this the case?
4 Answers
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Why does this (null || !TryParse) conditional result in “use of unassigned local variable”?
The following code results in use of unassigned local variable "numberOfGroups" :
3 Answers
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What are detached, persistent and transient objects in hibernate?
...in the database, an identifier value and is associated with a Session. You can make a transient instance persistent by associating it with a Session:
Long id = (Long) session.save(person);
// person is now in a persistent state
Now, if we close the Hibernate Session, the persistent instance will ...
Does the join order matter in SQL?
...R joins, yes, the order matters - and (updated) things are much more complicated.
First, outer joins are not commutative, so a LEFT JOIN b is not the same as b LEFT JOIN a
Outer joins are not associative either, so in your examples which involve both (commutativity and associativity) properties:
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Explaining difference between automaticallyAdjustsScrollViewInsets, extendedLayoutIncludesOpaqueBars
...views, and that's done with those properties:
edgesForExtendedLayout
Basically, with this property you set which sides of your view can be extended to cover the whole screen. Imagine that you push a UIViewController into a UINavigationController. When the view of that view controller is laid out, ...
Why would finding a type's initializer throw a NullReferenceException?
...ystem.Reflection.BindingFlags, System.Reflection.Binder, System.Reflection.CallingConventions, System.Type[], System.Reflection.ParameterModifier[])+0xa3:
000007fe`e5735403 488b4608 mov rax,qword ptr [rsi+8] ds:00000000`00000008=????????????????
Trying to load from [rsi+8] when @rsi is ...
Mongodb Explain for Aggregation framework
Is there an explain function for the Aggregation framework in MongoDB? I can't see it in the documentation.
3 Answers
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