字面值 meaning in English
literal value
literals
Examples
- Literals are notations for constant values of some built - in types
字面值是某些内建类型常值的表示法 - For this example , to get the literal values in a template variable , you would use
对于这个例子，为了取得模板变量中的字面值，应该结合使用 - All literals correspond to immutable data types , and hence the object ' s identity is less important than its value
所有字面值都属于不可变的数据类型，因此对象的标识比起它们的值来说显得次要一些。 - For example , if the indexed column has literal values and null values , then the selectivity is equal to the number of distinct keys in the index
例如，如果索引列包含字面值和null值，那么其选择性就等于索引中不同的键的数目。 - Note that numeric literals do not include a sign ; a phrase like - 1 is actually an expression composed of the operator - and the literal 1
注意数值型的字面值不包括符号(译注:正负号) ,像- 1实际上是个组合了一元运算符" - "和字面值1的表达式