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singleton    音标拼音: [s'ɪŋgəltən]
n. 一个,独生子,独身

一个,独生子,独身

singleton
n 1: a single object (as distinguished from a pair)
2: a set containing a single member
3: the playing card that is the only card in a suit held in a
bridge hand as initially dealt

Singleton \Sin"gle*ton\, n.
In certain games at cards, as whist, a single card of any
suit held at the deal by a player; as, to lead a singleton.
[1913 Webster]


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英文字典中文字典相关资料:


  • How do you implement the Singleton design pattern?
    What irks me most though is the run-time check of the hidden boolean in getInstance() That is an assumption on implementation technique
  • What are drawbacks or disadvantages of singleton pattern?
    Singleton pattern should only be used to guarantee that one and only one instance of a given class exists during run time People think Singleton is evil because they are using it for globals It is because of this confusion that Singleton is looked down upon Please, don't confuse Singletons and globals
  • What is the best way of implementing a singleton in Python?
    def singleton(cls): instance=cls() cls __new__ = cls __call__= lambda cls: instance cls __init__ = lambda self: None return instance Use it as a decorator on a class that should be a singleton Like this: @singleton class MySingleton: # This is similar to the singleton = lambda c: c() decorator in
  • What are the real world applications of the singleton pattern?
    public sealed class Singleton { Singleton() { } public static Singleton Instance { get { return Nested instance; } } class Nested { Explicit static constructor to tell C# compiler not to mark type as beforefieldinit static Nested() { } internal static readonly Singleton instance = new Singleton(); } }
  • . net - What is a singleton in C#? - Stack Overflow
    Singleton is a design pattern(not class) where constructor instantiation is allowed only one time If more
  • On design patterns: When should I use the singleton?
    A Singleton candidate must satisfy three requirements: controls concurrent access to a shared resource access to the resource will be requested from multiple, disparate parts of the system there can be only one object If your proposed Singleton has only one or two of these requirements, a redesign is almost always the correct option
  • Difference between static class and singleton pattern?
    Singleton has an instance object while static class is a bunch of static methods; Singleton can be extended e g through an interface while static class can't be Singleton can be inherited which supports open close principles in SOLID principles on the other hand static class can't be inherited and we need to make changes in itself
  • How to define Singleton in TypeScript - Stack Overflow
    ** * The Singleton class defines the `getInstance` method that lets clients access * the unique singleton instance * class Singleton { private static instance: Singleton; ** * The Singleton's constructor should always be private to prevent direct * construction calls with the `new` operator
  • c# - AddTransient, AddScoped and AddSingleton Services Differences . . .
    A Singleton service is created when it is first requested This same instance is then used by all the subsequent requests So in general, a Singleton service is created only one time per application and that single instance is used throughout the application life time AddTransient() - This method creates a Transient service A new instance of





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