java.sequence processing operators?
I know that the operators &&
, <<
is processed from left to right and ?:
- rigth to left.
So, my question: where i can find information about this?
I very need find information a开发者_运维知识库bout this in official docs, but i cant find...
That *
is processed before +
in a + b * c
is called "operator precedence"; *
has higher precedence than +
.
The Java™ Tutorials - Operators (while not the authoritative documentation) lists the operator precedence in a table, and notes that
All binary operators except for the assignment operators are evaluated from left to right; assignment operators are evaluated right to left.
The actual documentation is in Java Language Specification Chapter 15 - Expressions, but it is not at all readable. The documentation notes that
Precedence among operators is managed by a hierarchy of grammar productions. The lowest precedence operator is the arrow of a lambda expression (->), followed by the assignment operators. Thus, all expressions are syntactically included in the LambdaExpression and AssignmentExpression nonterminals:
There is no table of operator precedence in the Java Language Specification itself; instead the operator precedence is revealed indirectly in the grammar productions.
精彩评论