Effective Modern C ++ translation-Clause 2: Understanding auto automatic type Derivation
Clause 2: Understand auto type deduction
If you have read section 1 about template type derivation, you have almost all about auto type derivation. As to why
Article 2: Understanding Auto Automatic type DeductionIf you've read article 1 about template type deduction, you almost already know all about auto type deduction. As for why auto type deduction is the template type deduction there is only one
3.5.2 String TypeWe can represent a single character using a variable of type char, so how do we represent a string that has more than one character? We notice that a string is formed by a string that is linked together. Naturally, the simplest and
C++11 introduced the auto and Decltype keyword implementation of the type deduction, through these two keywords can not only convenient to obtain complex types, but also can simplify writing, improve coding efficiency. The type deduction for auto
3.5.2 String TypeWe can represent a single character using a variable of type char, so how do we represent a string that has more than one character? We notice that a string is formed by a string that is linked together. Naturally, the simplest and
3.5.2 String TypeWe can represent a single character using a variable of type char, so how do we represent a string that has more than one character? We notice that a string is formed by a string that is linked together. Naturally, the simplest and
Programming often requires the value of an expression to be assigned to a variable, which requires that the type of expression be clearly known when declaring a variable. But it's not always easy to do this, and sometimes it's not even possible. To
Attention:
Also to learn a
↑↑↑↑ Such a box of fragments is not from the original book , but my own understanding.Item 2 Understand Auto Type deduction-AutoType deductionBefore C++11, theauto keyword has been used to declare
Cocos 3.x uses a lot of C + + 11 stuff, so as a loyal C + + fan, it is necessary to do a systematic study of C + + 11.Before using c++11, be sure to be aware of the compiler's support for c++11, and some compilers are not fully supported, such as
Analysis of C ++ auto type specifiers
When programming, you often need to assign the expression value to the variable, which requires you to clearly know the type of the expression when declaring the variable. However, it is not that easy to do
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