写出优雅简明代码理论指导收集

1. 不要使用””, 使用string.Empty

string name = string.Empty;

2. 善于合并if

public bool Equals(CommentData obj) {
if (!CommentId.Equals(obj.CommentId)) return false;
if (!Comment.Equals(obj.Comment)) return false;
if (!CommentorId.Equals(obj.CommentorId)) return false;
return true;
}

--------->>>public bool Equals(CommentData obj) {return CommentId == obj.CommentId &&Comment.Equals(obj.Comment) &&CommentorId == obj.CommentorId;}

3. 不断重构你的代码

4. 用 Linq 简化代码

foreach (CommentData data in Comments)
{
if (data.CommentId.HasValue)
throw new ArgumentNullException("Create is only for saving new data.  Call save for existing data.", "data");
}

--------------->>>

if (Comments.Any(data => data.CommentId.HasValue))
{
throw new ArgumentNullException("Create is only for saving new data.  Call save for existing data.", "data");
}

5. 运用 ？：和？？[/code]

string name = value;
if (value == null)
{
name = string.Empty;
}

------------>>>

string name = (value != null) ? value : string.Empty;

或: string name = value ?? string.Empty;

6.运用AS
if (employee is SalariedEmployee)

{
var salEmp = (SalariedEmployee)employee;
pay = salEmp.WeeklySalary;
// ...
}

----------------------------------->>>

var salEmployee = employee as SalariedEmployee;
if (salEmployee != null)
{
pay = salEmployee.WeeklySalary;
// ...
}

7. 运用 using, 去除dispose（）[/code]

------------------------------->>>

再次简化：

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