Do extra using statements impact the compilation time?

Error processing SSI file

Answers

  1. Aldo

    • 2015/10/28

    No. It's simply syntactic sugar for try/finally Dispose.

    IDisposable myDisposable;
    
    try
    {
        myDisposable = new MyDisposable();
    }
    finally 
    {
        myDisposable.Dispose();
    }
    
  2. Shiloh

    • 2019/4/4

    It can also affect the performance of evaluating expressions in the debugger for the No, it's just a compile-time/coding style thing.

  3. Frasheri

    • 2019/5/22

    I might have misunderstood your question about using. If you are referring to bringing namespaces into scope then no, there is nothing bad if you leave unused using statements. The compiler will automatically remove them and they will not be part of the generated IL. They will neither slow your compile time nor do anything bad.

  4. Farina

    • 2020/5/21

    There aren't any performance benefits, if that's what you mean. All references in an assembly are fully qualified; the compiler merely uses the references 

  5. Fletcher

    • 2018/9/9

    using statements should be used when you are working with objects that implement the IDisposable interface such as streams, GDI objects, database connections, etc... This ensures that those objects will be properly disposed of and eventually free any associated resources with them.


    UPDATE:

    I might have misunderstood your question about using. If you are referring to bringing namespaces into scope then no, there is nothing bad if you leave unused using statements. The compiler will automatically remove them and they will not be part of the generated IL. They will neither slow your compile time nor do anything bad. Personally I don't leave them as they are ugly to my eyes, but its from pure aesthetics and personal point of view. Visual Studio has a nice refactor setting when you right click in the source code which allows you to reorgnanize and remove unused using statements.

  6. Benson

    • 2016/1/30

    Regarding faster compilation: Unused using directives in .cs files can prevent you from removing some (otherwise unused) assembly references from your .csproj project. If you have a "solution" of many projects, unnecessary references between the projects will force the projects to be compiled in a specific order when in fact they are independent and can be compiled in parallel.

  7. Thomas

    • 2016/9/13

    I was wondering, is it matter if I use extra using statements, does it take more time to compile, does it cause anything bad? Thanks.

  8. Royal

    • 2017/12/21

    The compilation report states that the CPA did not audit or review the financial statements and accordingly does not express an opinion, a conclusion or provide any assurance on them. A compilation is typically appropriate when initial or lower amounts of financing or credit are sought or there is

  9. Canaan

    • 2017/10/3

    Because They're just a compile-time constant to allow the compiler unused using statements which create even more clutter in you code.

  10. Malakai

    • 2016/12/20

    How do you run this statement? Maybe you could push your test setup to github so we can see how exactly you run your test, as the difference you see is probably due to the fact that you don't reuse compiled .pyc files (as I said, comments do impact compilation time, but they should not impact execution time). –

  11. Khari

    • 2018/1/31

    removing unused "using" statements does not have any impact however, this should happen at compile time, not at runtime. thus, 

  12. Diaz

    • 2016/9/6

    A time impact analysis is a method used to determine the extent of the impact that a delay or change order will have on the overall project timeline. This is a “forward-looking” analysis since it focuses on the impact of events that have already occurred or are presently occurring.

  13. Elliot

    • 2018/5/11

    An integer arithmetic statement that is in the scope of a checked or unchecked keyword isn't subject to the effect of the 

  14. Malakhi

    • 2020/7/9

    Faster compilation, because the compiler has less work to do. Given the topic of this post, that last advantage is what we care about. So how much difference does using hidden friends make? To test this, I generated a simple .cpp file with 200 structs like the one above, giving a total of 400 overloads of operator<<.

  15. Pedro

    • 2016/11/11

    An overarching goal was that Go do more to help the working programmer by By January 2008, Ken had started work on a compiler with which to explore 

  16. Miles

    • 2021/3/11

    For a cache size of one, the average compilation time is the highest at 709 microseconds, then it decreases to 409 microseconds for a cache size of two, and all the way to 0.637 microseconds for a cache size of three. 6. Using Hibernate Statistics

  17. Paul

    • 2017/7/29

    Most declarations can be resolved by the compiler and require little or no One way of classifying the statements of Ada is given in [ 6 ] as shown in 

  18. Harlem

    • 2021/1/25

    However , communication latency does have a significant impact on the execution time . It is therefore desirable to overlap computation and communication in 

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