C++ 程序设计语言（特别版）（英文影印版）

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  第418页

  Marmot

  .A pointer to a member is a value that identifies a member of class.Pointers to members look like pointer type,but it is not an ordinary pointer. 1. Ordinary pointer and pointers to members could be implicitly converted to null constant pointer both. 2. Ordinary pointer and pointers to members could be implicitly converted to bool type both. 3. Ordinary could be implicitly converted to... (更多)

  .A pointer to a member is a value that identifies a member of class.Pointers to members look like pointer type,but it is not an ordinary pointer.

  1. Ordinary pointer and pointers to members could be implicitly converted to null constant pointer both.

  2. Ordinary pointer and pointers to members could be implicitly converted to bool type both.

  3. Ordinary could be implicitly converted to void* cv pointer. Pointers to members could not be implicitly converted to void* cv pointer.

  4. An rvalue of type “pointer to member of B of type cv T,” where B is a class type, can be implicitly converted to an rvalue of type “pointer to member of D of type cv T,” where D is a derived class of B.In conrast, a pointer to B could not implicitly converted to a pointer to D. In face, both rules exist to preserve the fundamental guarantee that a pointer may never point to an object that doesn't at least have properties that the pointer promises. By refusing these conversion, perhaps the compliers saves us from a run-time error. (收起)

  2012-02-10 09:52:49   回应

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  第336页

  Marmot

  When both ordinary function and template function join in the overloading resolution,guess what happans? I think one of the possibilities is going to be a gork. The brief rule is as follows: 1. Find the set of function template specializations that will take part in overload res-olution; 2. Consider only the most specialized template function in the following steps. 3. Do overload res... (更多)

  When both ordinary function and template function join in the overloading resolution,guess what happans? I think one of the possibilities is going to be a gork.

  The brief rule is as follows:

  1. Find the set of function template specializations that will take part in overload res-olution; 2. Consider only the most specialized template function in the following steps. 3. Do overload resolution for this set of functions, plus any ordinary functions as for ordinary functions.If a template function argument has been determined by template argu-ment deduction (§13.3.1), that argument cannot also have promotions, standard conversions, or user-defined conversions applied[even though,these conversions can be used if the function argument don't involved in the deduction of a template parameter]. 4.If a function and a specialization are equally good matches, the function is preferred.

  The principle of the resolution rule is selecting the most specified function,with less conversion and deduction.

  (收起)

  2012-01-11 19:17:13   回应

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  第329页

  Marmot

  How to beginning study template: Similarly, when trying to understand a template, it is often useful to imagine its behavior for a particular type argument such as char before trying to comprehend the template in its full generality. (更多)

  How to beginning study template:

  Similarly, when trying to understand a template, it is often useful to imagine its behavior for a particular type argument such as char before trying to comprehend the template in its full generality.

  (收起)

  2012-01-03 15:27:32   回应

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  第1页

  Marmot

  "Between the previous and next sequence point a scalar object shall have its stored value modified at most once by the evaluation of an expression." 在前一个连续点与后一个连续点之间一个对象的值只能够被修改至多一次,否则行为不确定. sequence point 说明:<其中还有C\C++标准的sequence point 说明> http://en.wikipedia.org/wiki/Sequence_point side effect 说明: http://en.wikipedi... (更多)

  "Between the previous

  and next sequence point a scalar object shall have its stored value modified at most once by the evaluation

  of an expression."

  在前一个连续点与后一个连续点之间一个对象的值只能够被修改至多一次,否则行为不确定.

  sequence point 说明:<其中还有C\C++标准的sequence point 说明> http://en.wikipedia.org/wiki/Sequence_point

  side effect 说明: http://en.wikipedia.org/wiki/Side_effect_%28computer_science%29

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  2011-10-19 10:39:44   回应

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  第26页

  Marmot

  Over the years, the emphasis in the design of programs has shifted from the design of procedures and toward the organization of data. Among other things, this reflects an increase in program size. A set of related procedures with the data they manipulate is often called a module. The programming paradigm becomes: Decide which modules you want; partition the program so that data is hidden withi... (更多)

  Over the years, the emphasis in the design of programs has shifted from the design of procedures and toward the organization of data. Among other things, this reflects an increase in program size. A set of related procedures with the data they manipulate is often called a module. The programming paradigm becomes: Decide which modules you want; partition the program so that data is hidden within modules.

  大师高屋建瓴,简单明了的指明了模块化编程的关键之处.通过隐藏数据,减少模块与模块之间的依赖. (收起)

  2011-11-10 20:22:36   回应

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  第66页

  Marmot

  第三章忠告: [2] don't believe in magic;understand what you libraries do,how they do it, and at what cost they do it. 不要以为库都是在变魔术;理解你的库做了些什么,他们怎么做的,以及他们这么做的代价. [4] Do not think that the standard library is ideal for everything. 不要以为标准库对所有的场景都适用. (更多)

  第三章忠告:

  [2] don't believe in magic;understand what you libraries do,how they do it, and at what cost they do it.

  不要以为库都是在变魔术;理解你的库做了些什么,他们怎么做的,以及他们这么做的代价.

  [4] Do not think that the standard library is ideal for everything.

  不要以为标准库对所有的场景都适用.

  (收起)

  2011-09-22 09:34:09   回应

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  第418页

  Marmot

  .A pointer to a member is a value that identifies a member of class.Pointers to members look like pointer type,but it is not an ordinary pointer. 1. Ordinary pointer and pointers to members could be implicitly converted to null constant pointer both. 2. Ordinary pointer and pointers to members could be implicitly converted to bool type both. 3. Ordinary could be implicitly converted to... (更多)

  .A pointer to a member is a value that identifies a member of class.Pointers to members look like pointer type,but it is not an ordinary pointer.

  1. Ordinary pointer and pointers to members could be implicitly converted to null constant pointer both.

  2. Ordinary pointer and pointers to members could be implicitly converted to bool type both.

  3. Ordinary could be implicitly converted to void* cv pointer. Pointers to members could not be implicitly converted to void* cv pointer.

  4. An rvalue of type “pointer to member of B of type cv T,” where B is a class type, can be implicitly converted to an rvalue of type “pointer to member of D of type cv T,” where D is a derived class of B.In conrast, a pointer to B could not implicitly converted to a pointer to D. In face, both rules exist to preserve the fundamental guarantee that a pointer may never point to an object that doesn't at least have properties that the pointer promises. By refusing these conversion, perhaps the compliers saves us from a run-time error. (收起)

  2012-02-10 09:52:49   回应

  收藏

  推荐
• 

  第336页

  Marmot

  When both ordinary function and template function join in the overloading resolution,guess what happans? I think one of the possibilities is going to be a gork. The brief rule is as follows: 1. Find the set of function template specializations that will take part in overload res-olution; 2. Consider only the most specialized template function in the following steps. 3. Do overload res... (更多)

  When both ordinary function and template function join in the overloading resolution,guess what happans? I think one of the possibilities is going to be a gork.

  The brief rule is as follows:

  1. Find the set of function template specializations that will take part in overload res-olution; 2. Consider only the most specialized template function in the following steps. 3. Do overload resolution for this set of functions, plus any ordinary functions as for ordinary functions.If a template function argument has been determined by template argu-ment deduction (§13.3.1), that argument cannot also have promotions, standard conversions, or user-defined conversions applied[even though,these conversions can be used if the function argument don't involved in the deduction of a template parameter]. 4.If a function and a specialization are equally good matches, the function is preferred.

  The principle of the resolution rule is selecting the most specified function,with less conversion and deduction.

  (收起)

  2012-01-11 19:17:13   回应

  收藏

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• 

  第329页

  Marmot

  How to beginning study template: Similarly, when trying to understand a template, it is often useful to imagine its behavior for a particular type argument such as char before trying to comprehend the template in its full generality. (更多)

  How to beginning study template:

  Similarly, when trying to understand a template, it is often useful to imagine its behavior for a particular type argument such as char before trying to comprehend the template in its full generality.

  (收起)

  2012-01-03 15:27:32   回应

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