Auto-get | Auto-Get | REST library
kandi X-RAY | Auto-get Summary
kandi X-RAY | Auto-get Summary
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Community Discussions
Trending Discussions on Auto-get
QUESTION
It seems that every post I have come across comes to the same consensus: properties that merely return a field are inlined by JIT and have nearly identical performance to fields.
However, this doesn't seem to be the case with my current scenario. My program does intensive calculations that access many properties that are simply auto-getters and private setters. In this particular case, however, I am just copying an object.
Profiling the code in release mode with optimizations enabled resulted in many calls to the get
functions of the property. The calls to Copy()
total up to ~5.6ms.
However, when the properties are converted into fields, the function runs 6x faster than it did with properties:
Comparing equality of two properties seems to incur even more of a performance hit compared to using fields. Here's a benchmark of a class's IEquatable
implementation, using the same code but swapping properties with fields.
If JIT is supposed to optimize properties by inlining them, why is this occuring? I would like to keep properties, as the access control aspect of them is very convenient, but if they are this much slower I will stick to fields.
EDIT: It seems like some (but not all) cases affected by this problem are using properties declared in interfaces. No other polymorphism is being used in these cases, but removing the interface brings the performance variance into expected levels in these cases.
EDIT 2: As stated in the previous edit, it seems that a part of the problem was due to Interface virtual calls. After more investigation, it seems that running a benchmark in the CLR properly inlines properties, but JetBrains dotTrace does not, even with "Enable inline" checked.
...ANSWER
Answered 2018-Dec-14 at 03:06Unfortunately the is not much more you can do except try to help the JITTER out by using
QUESTION
I use a DataContract to handle a class in a WCF-Service. Therefore I need the property ApiCallStatus (type: ApiCallStatus as Enum) to have a both auto-getter and -setter. But for the override of GetHashCode I need a "readonly" property to implement it correctly. Is there a way to implement this in a way that both requirements work correctly and are implemented in a clean way?
...ANSWER
Answered 2018-Aug-20 at 09:26A [DataMember]
may be private readonly
, which avoids this issue.
The reason it can be private readonly
is that the [DataContract]
implementation uses reflection to set the [DataMember]
fields, which means that the private
and readonly
aspects are ignored.
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Install Auto-get
You can use Auto-get like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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