null是什么意思
2024-01-27 09:16:17
null
adj. 无效的;无价值的;无效力的
n. 零;空
vt. 使无效
过去式:nulled 过去分词:nulled 现在分词:nulling 第三人称单数:nulls
近义词:worthless,invalid,valueless,insignificant,useless,void,nullandvoid,unacceptable,unsound,untrue,unimportant,ineffectual,nonexistent,piddling,inoperative,immaterial,blank,trivial,inexistent,clear,hollow,trifling,no-good,inutile,bare,empty,unsubstantial,unprofitable,foolish,good-for-nothing,vacuous,nugatory,inane,purposeless,inconsequential,futile,senseless,unavailing,inefficacious,extinguished,destroyed,annihilated,expunged,obliterated,exterminated,effaced,dissolved,extirpated,eliminated,binding,not,naught,Nada,Zippo,nil,nix,gooseegg,zip,aught,cipher,zero,nothing,zilch,cypher,
详细释义
adj.(形容词)
- 无效的,无效力的,无用的,无益的
- 无价值的
- 无束缚力的
- 等于零的,零值的
- 【数】零的,空的
- 没特征的,没表情的
- 不存在的,没有的
- 零(位)的
- 毫不引起注意的
- 无法律效力的
n.(名词)
- 【数】零,零位,空
- 【无线电】零讯号,微弱讯号
- 平衡
- 无感点
- 静音点
v.(动词)
- 使无效
- 在零位
- 使恢复零位
英英释义
Noun
- a quantity of no importance;
"it looked like nothing I had ever seen before" "reduced to nil all the work we had done" "we racked up a pathetic goose egg" "it was all for naught" "I didnt hear zilch about it"
Adjective
- lacking any legal or binding force;
"null and void"
例句
用作形容词(adj.)
- Their actions rendered the contract null and void.他们的行为使合同无效。
- The marriage was declared null and void.婚姻已宣告无效了。
用作名词(n.)
- The path must end with a null character.该路经必须以零结尾。
- Vomit in null gravity wouldnt be fun.如果在零重力下呕吐了可不是件好笑的事。
- A null reference pointer was passed to the stub.向占位程序传送了空的索引指针。
- Primary keys do not allow null values.主键不允许空值。