How to use the list of values enclosed by curly braces to assign values in curly braces 11

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What's New in Category 11 (2)-list initialization

In addition to initialization, this form can also be used in assignment statements. Let's review what happened when the variable was initialized:

Vector vi {1, 2, 3, 4, 5}

The following is the case of assignment:

Vector vi

Vi = {6,7,8,9,10}

This form is very useful for the assignment of a limited number of values.

Supplement

A list of values surrounded by curly braces has the same advantage as initialization. One is to prevent narrowing, which can sometimes be simply understood to prevent a reduction in precision, for example, the following code cannot be compiled:

Double pai = 3.1415926

Int pi

Pi = {pai}; / / compilation error.

In addition, if the initialization list in curly braces is empty, the compiler creates a temporary amount of value initialization and assigns a value to the assignment object.

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