copy and paste this google map to your website or blog!
Press copy button and paste into your blog or website.
(Please switch to 'HTML' mode when posting into your blog. Examples: WordPress Example, Blogger Example)
Input Form:Deal with this potential dealer,buyer,seller,supplier,manufacturer,exporter,importer
(Any information to deal,buy, sell, quote for products or service)
c# - AddTransient, AddScoped and AddSingleton Services Differences . . . A singleton service is most restrictive in terms of its dependencies, and it should not depend on transient or scoped services, but can depend upon other singleton services Capture of scope services by singletons is one of the more dangerous possibilities
What are drawbacks or disadvantages of singleton pattern? The singleton pattern is a fully paid up member of the GoF's patterns book, but it lately seems rather orphaned by the developer world I still use quite a lot of singletons, especially for factory
. net - What is a singleton in C#? - Stack Overflow A singleton is a class which only allows one instance of itself to be created - and gives simple, easy access to said instance The singleton premise is a pattern across software development There is a C# implementation "Implementing the Singleton Pattern in C#" covering most of what you need to know - including some good advice regarding thread safety To be honest, It's very rare that you
How do you implement the Singleton design pattern? One example is if the constructor of the singleton allocates memory from the heap and you wish that allocation to be predictable, for instance in an embedded system or other tightly controlled environment I prefer, when the Singleton pattern is the best pattern to use, to create the instance as a static member of the class
What is the best way of implementing a singleton in Python? A singleton is special because its instance is created only once, and a metaclass is the way you customize the creation of a class, allowing it to behave differently than a normal class
Example of Singleton pattern - Stack Overflow Singleton is a software pattern Here is an example in C# Having a single queue on a LAN is more of a hardware network design issue rather than a software concept, so not really applicable If you were modeling such a thing in software and had to be certain there is only one queue, then it would be applicable
ASP. NET Core initialize singleton after configuring DI What if your singleton service needs to read data from a file or load data from a database and act as cache of that data? It doesn't seem right to do it during the first request (when the service is asked for) but to me this seems like a common situation Moreover those operations are potentially dangerous and can throw exceptions which you would want to catch, log etc what is the best