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Definition and initialization of structure

definition 1. Define the structure type name first, such as struct score { char str[10]; int num1; double num2; }; // Don't forget to add a semicolon after definition! If the structure type name is to be used in multiple functions, it is defined outside all functions, just as global variables are defined It should be prefixed with struct, followed by the structure type name score, and then the components of...

programmer group

A complete interpretation of promise

About promise Is an object that holds the future execution results of asynchronous events. It’s not a new technology, it’s a technology that can be usedSpecification for optimizing the coding style of asynchronous programming. It was first born in the community to solve problems in JavaScript codeThere are too many nested levels of callbacks and stacking of error handling logic. Using promise object to encapsulate...