英語(yǔ) as的含義
在英語(yǔ)中,as出現(xiàn)的頻率是很高的,哪位能否提供一下它的用法及含義,最好能全面一點(diǎn),要求用實(shí)例說(shuō)明
* Whenever an operation occurs involving a source sequence (such as
* appending or inserting from a source sequence) this class synchronizes
* only on the string buffer performing the operation,not on the source.
* As of release JDK 5,this class has been supplemented with an equivalent
* class designed for use by a single thread,{@link StringBuilder}.The
* StringBuilder class should generally be used in preference to
* this one,as it supports all of the same operations but it is faster,as
* it performs no synchronization.誰(shuí)能把這段完整翻譯過(guò)來(lái)，我就把分給他哈……金山詞霸？