空字符串

• Sets the supported operators to be the empty string
  将支持的操作符设置为空字符串。
• Property default , which is an empty string
  属性默认值，该值为空字符串( " ) 。
• Attribute , the value of the variable is an empty string
  属性，变量值将为空字符串。
• An empty string is generated if there is no content
  如果没有内容，则生成空字符串。
• Ensures that the null string is passed as
  包装该字符串可确保该空字符串作为
• Product code string representations are empty strings
  产品代码的字符串表示是空字符串
• Which is sometimes referred to as a null string
  ) ，零长度字符串有时也称为空字符串。
• The null value is treated as an empty character string
  空值被视为空字符串进行处理。
• Property is set to the empty string by default
  属性默认被设置为空字符串。
• Attribute , the value of the parameter is an empty string
  属性，参数值将为空字符串。