以下是我总结的一些编程好习惯
DRY (Don’t Repeat Yourself) Rule
利用添加parameters的方法实现DRY
getPresidencyTerm(isWholeLife: boolean, term: number) string {
if (isWholeLife) {
return "终身制";
}
else if (term) {
return `${this.selectedPresident.term} years`;
}
return "Not a president";
}
isWholeLife: boolean is an added parameter, though it looked a little odd at the beginning that a boolean param is added with a string param :)
How to Make Code More Elegant?
When “if”, when “else”?
If an “if statement” handles a corner case, you can determine if the following statements after “if statement” can be grouped into else condition, cuz “if statement” does Not need to exam extra same thing.
Original Way:
if (certain condition) {
complex statements
}
statement 1;
statement 2;
Modified To:
if (certain condition) {
complex statements
} else {
statement 1;
statement 2;
}
But, this change is optional and totally your call.
When to use _ variables?
It is a naming convention for PRIVATE member variables. As here