非空

• Checks if a string is not empty ( " " ) , not null and not whitespace only
  判断一个字符串是否非空，空格作空处理
• A null reference is considered to be less than any reference that is not null
  空引用被认为小于任何非空引用。
• Has returned a non empty array
  已返回非空数组。
• Is non - null , it is assumed that the key pair is contained in the key blob
  非空，则假定密钥blob中包含了密钥对。
• Aggregation over a set of values that are not all guaranteed to be non - null
  对一组不保证全为非空的值进行聚合。
• Importing data from a single client or stream into a non - empty table
  将数据从单个客户端（或数据流）导入到非空表中
• Nodes with a non - a null reference nothing in visual basic
  架构信息可以在具有非空引用（在visual basic中为nothing ）
• Adds a space to the specified string , given the string is not empty
  向指定的字符串（在非空的情况下）添加一个空格。
• Property to a non - a null reference nothing in visual basic value
  属性设置为非空引用（在visual basic中为nothing ）值。
• Requires caller to pass non - null parameter " source " to calcsquareroot
  要求调用方将非空参数“ source ”传递给calcsquareroot