1、 Vertical Whitespace Violation: Limit vertical whitespace to a single empty line. Currently 2.
空白问题,要求代码之间的空白行为一行,当前是2行或多行就会提示,修改的话删除多余空白行就可以
2、 Type Body Length Violation: Type body should span 200 lines or less excluding comments and whitespace: currently spans 325 lines
类的大小问题,当前要求一个类的大小是小于等于200行,不包括空白行和注释,当前是325行。修改这个很麻烦,只能进行类的拆分,但是有些类并不是越小越好,所以这条就根据当前类的自行考虑,并不一定需要照做
3、 Control Statement Violation: if
, for
, guard
, switch
, while
, and catch
statements shouldn't unnecessarily wrap their conditionals or arguments in parentheses.
当使用if、for、guard、switch、while、catch等语句时,并不需要加多余的括号
错误
if (plateNo.count > 1) {
...
}
正确
if plateNo.count > 1 {
...
}
4、 Opening Brace Spacing Violation: Opening braces should be preceded by a single space and on the same line as the declaration.
括号前应该空一格,而不是紧挨着语句,并且要求与声明在同一行
5、 Vertical Parameter Alignment Violation: Function parameters should be aligned vertically if they're in multiple lines in a declaration.
如果一个方法的参数分多行书写,则参数应该对齐
6、 Function Body Length Violation: Function body should span 40 lines or less excluding comments and whitespace: currently spans 48 lines
方法大小的问题,方法应该小于等于40行,不包括空白行和注释
7、 Colon Violation: Colons should be next to the identifier when specifying a type and next to the key in dictionary literals.
冒号违规问题,冒号应该靠左,并且右边有一个空格
let left:CGFloat = 90
错误
let left : CGFloat = 90
错误
let left: CGFloat = 90
正确
8、 Trailing Semicolon Violation: Lines should not have trailing semicolons.
swift在行的结尾处不应该有分号
let left: CGFloat = 90;
错误
let left: CGFloat = 90
正确
9、 File Line Length Violation: File should contain 400 lines or less: currently contains 496
文件应该小于等于400行
10、 Identifier Name Violation: Variable name should only contain alphanumeric characters: 'safe_bottom'
变量名不能包含除字母数字外的其他字符
public let safe_bottom: CGFloat
错误
public let safeBottom: CGFloat
正确
11、Identifier Name Violation: Variable name should be between 3 and 40 characters long: 'vc'
变量名定义应该在3-40个字符之间,用vc就只有2个字符,可以改为control等
12、 Force Cast Violation: Force casts should be avoided
避免直接的类型强转
let show = item as! Chemistry
错误
if let show = item as? Chemistry {
}
正确
13、 Unused Closure Parameter Violation: Unused parameter "model" in a closure should be replaced with _.
当参数并没有使用的时候,建议把参数名用_替代
14、 Mark Violation: MARK comment should be in valid format. e.g. '// MARK: ...' or '// MARK: - ...'
注释的格式错误,//和MARK中间需要有空格
15、 Comma Spacing Violation: There should be no space before and one after any comma.
逗号格式违规,逗号应该紧跟字符,不要有空格,逗号后空一格
16、 Trailing Newline Violation: Files should have a single trailing newline.
文件的结尾应该有一个空行
17、 Opening Brace Spacing Violation: Opening braces should be preceded by a single space and on the same line as the declaration.
左大括号间距违规:左大括号前面应该有一个空格,并与声明在同一行
18、 Implicit Getter Violation: Computed read-only properties should avoid using the get keyword
计算的只读属性应避免使用 get 关键字
19、 For Where Violation: where
clauses are preferred over a single if
inside a for
在for循环语句中,如果你的判断语句只有一句,应该使用where而不是if
20、 Multiple Closures with Trailing Closure Violation: Trailing closure syntax should not be used when passing more than one closure argument.
当函数有多个闭包的时候,最后不要使用尾随闭包,但是这个是一个非常恶心的提示,因为你用xcode的时候,xcode会自动帮你用尾随闭包,所以想不出现就需要自己手动改,很影响开发效率
foo.something(param1: { $0 }) { $0 + 1 }
错误
foo.something(param1: { $0 }, param2: {$0 + 1})
正确
21、 Weak Delegate Violation: Delegates should be weak to avoid reference cycles.
代理应该添加weak修饰符,避免循环引用