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请输入英文单字，中文词皆可：

allocator    音标拼音: ['ælək,etɚ]
分配者,分配符,分配算符

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  • Whats the advantage of using std::allocator instead of new in C++?
    I've just read about std::allocator In my opinion, it is more complicated to use it instead of using new and delete With allocator we must explicitly allocate heap memory, construct it, destroy
  • Compelling examples of custom C++ allocators? - Stack Overflow
    What are some really good reasons to ditch std::allocator in favor of a custom solution? Have you run across any situations where it was absolutely necessary for correctness, performance, scalabili
  • How are allocator in C++ implemented? - Stack Overflow
    The default allocator is std::allocator, and just uses ::operator new as and when required, so nothing special It's more or less the same as doing new and delete yourself for each object needed You can read more about it under [default allocator] in the standard The allocator "interface" (really just a set of requirements, enforced during template instantiation) is a wrapper around this
  • c++11 - How to use allocators in modern C++ - Stack Overflow
    The question is, how is one supposed to use allocators in new code? What is the "right" way now? From what I deduce in the documentation, construct is part of the allocator traits, rather than the allocator itself I am building a custom container, here it is a very simple version of the constructor, is this a good usage of the new design?
  • Converting between vectors with different allocators
    III Another solution is to create a parent class which could be used as an allocator adapter between the std allocator and your own allocator In this case, your 2 allocators are of the same type, and could be used with vector methods like operator= ()
  • polymorphic_allocator: when and why should I use it?
    A polymorphic allocator solution on the other hand dictates that a polymorphic allocator must be used This precludes using std:: containers which use the default allocator, and might have implications for interfacing with legacy code
  • How does an allocator work with std::vector? - Stack Overflow
    The allocator instance gets passed as a const reference to std::vector 's constructor The std::vector itself has an instance of Allocator as a (private) class member, and it is copy-constructed from this parameter Keep in mind that Allocator is the second (defaulted) std::vector template parameter
  • c++ - What is allocator lt;T gt; - Stack Overflow
    std::allocator is a template taking one type parameter, which is the type of objects to be allocated Instantiations of std::allocator use operator new() and operator delete() internally, but the fact that std::allocator<T> has information about what T is means that it knows how to construct and destroy T objects
  • Modern approach to making std::vector allocate aligned memory
    The specified allocator type has to implement at least allocate, deallocate, and value_type In contrast to these answers, this implementation of such an allocator avoids platform-dependent aligned malloc calls





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