Some knowledge points of C,

Some knowledge points of C,

• It is not allowed to merge the encoding in the ref or out mode.

It seems that attention is similar to the field, but attention is essentially a method that does not really point to a memory location, therefore, it is not possible to merge rows in the ref or out mode like a field.

 

The atomicity of the anonymous type is always unknown.

 

Native value-type classes use the ToString method to avoid binning.

The former is more efficient than the latter, because the latter recognizes the mailbox. Therefore, when a value type involves string operations, the ToString method should always be used.

 

Type-wise and Inverse

Only interfaces and delegation can be used to identify these two features, which are not supported by classification (derived from the classification of class security ).

Future changes use out to repair the parent class. The opposite is the return value. If the parent class can be returned, the Child class can also be returned.

// Covariance.

IEnumerable <string> strings = new List <string> ();

IEnumerable <object> objects = strings;

The inverse Change uses in to repair the problem. The opposite is the regression number. The negative argument is: if the parent class can be imported, the Child class can also be written.

// Contravariant.

IComparer <object> objects = objectComparer;

IComparer <string> strings = objects;

Dynamic-type data can be converted into other types, but objects cannot.

For example, dynamic d = 1; int I = d;

The generator deems any operation on dynamic legal.