null
英[n?l]
美[n?l]
- adj. 無效的，無價(jià)值的；等于零的
- n. 零，[數(shù)] 空
英文詞源
- null (adj.)
- "void of legal force," 1560s, from Middle French nul, from Latin nullus "not any, none," from ne- "not, no" (see un-) + illus "any," diminutive of unus "one" (see one).
雙語例句
- 1. A spokeswoman said the agreement had been declared null and void.
- 女發(fā)言人稱該協(xié)議已宣布無效。
來自柯林斯例句
- 2. Failure. The NULL value has been passed as a parameter.
- 失敗. 將空指針NULL傳給了一個參數(shù).
來自互聯(lián)網(wǎng)
- 3. If mem block is NULL, pointer is ignored and free immediately returns.
- 如果NULL內(nèi)存塊,操作將被忽略并且函數(shù)立即返回.
來自互聯(lián)網(wǎng)
- 4. This function returns the removed node on success, or NULL on failure.
- 這個函數(shù)如果執(zhí)行成功,將返回被刪除的子節(jié)點(diǎn);如果執(zhí)行失敗, 將返回null[空值].
來自互聯(lián)網(wǎng)
- 5. A pointer to a NULL - terminated string representing a device instance identifier.
- 指向一個以NULL結(jié)尾的字符串,象征設(shè)備實(shí)例描述符.
來自互聯(lián)網(wǎng)