implicit conversions

• By eliminating unnecessary casts , implicit conversions can improve source code readability
  隐式转换可以通过消除不必要的类型转换来提高源代码的可读性。
• Due to an implicit conversion , the compiler was not able to call one form of an overloaded method
  因隐式转换的缘故，编译器无法调用重载方法的某种形式。
• Unlike implicit conversion , explicit conversion operators must be invoked by means of a cast
  与隐式转换不同，必须通过强制转换的方式来调用显式转换运算符。
• The workaround is to request the specific type of cursor , instead of depending on implicit conversion
  解决方法是请求特定类型的游标，而不是依赖于隐式转换。
• They do not include implicit conversions from an intrinsic numeric type to a string when using the
  运算符时，这些实例不包含从内部数值类型到字符串的隐式转换。
• Implicit conversions are those conversions that occur without specifying either the cast or convert function
  隐式转换指那些没有指定cast或convert函数的转换。
• Before a function compares two values , the expression evaluator performs the following implicit conversions
  在函数比较两个值之前，表达式计算器会执行下列隐式转换：
• The underlying column may be of any type , but implicit conversion from the passed object must be supported
  基础列可以是任意类型，但是必须支持对传递的对象的隐式转换。
• Implicit conversions might occur in many situations , including method invoking and assignment statements
  隐式转换可能在多种情形下发生，包括调用方法时和在赋值语句中。
• If a default value is specified for a user - defined type column , the type should support an implicit conversion from
  如果为用户定义类型列指定了默认值，则该类型应当支持从