null class中文意思是什麼

null class解釋
空類

  • null: adj 1 無效力的,無束縛力的。2 無效的,無用的,無益的;無價值的。3 沒特徵[個性]的,沒表情的。4 〈...
  • class: n 1 階級;社會等級。2 學級;班級,年級,級,班;組;(有組織的)講習班;〈美國〉同年畢業班;【軍事...

※英文詞彙null class在字典百科英英字典中的解釋。

  1. Theorem 3. 9 if g is locally finite p - group and c * ( p ) - group, then the nilpotent class of g is at most 3 and the derived subgroup of g is elementary abelian p - group

    定理39若局部有限屍群g是c 「卜群,則g的類最多為3且g 』是初等阿貝爾p群
  2. Abies yuanbaoshanensis is a guangxi endemic and endangered evergreen coniferous arbor, listed in the red data book of plant in p. r. c, being one of the stated - proteced first - class rare and endangered plants. it is distributed only in yuanbaoshan mountain in northern guangxi

    元寶山冷杉是松科冷杉屬的常綠針葉喬木,是20世紀70年代發現的新種,它是世界上僅產于廣西融水縣北部元寶山的殘遺瀕危種,已被列為一級保護的瀕危植物。
  3. Describes data access programming with visual c, where the preferred way is to use one of the class libraries such as the active template class library or microsoft foundation class library, which simplify working with the database apis

    描述如何使用visual c + +進行數據訪問編程,首選方式是使用類庫(如活動模板類庫( atl )或microsoft基礎類( mfc )庫)之一,這將簡化對數據庫api的使用。
  4. Arrays, whether local or class - level, are always initialized. ( 24 ) strings are initialized to null, not empty string. ( 25 ) an empty string is not the same as a null string. ( 26 ) a declaration cannot be labelled

    這句話是說:多維數組中子數組不一定必須有一定個數的元素,比如我們把一個二維數組看成一個矩陣,那麼行與列中的元素可以不完整,可以不對齊
  5. Parameter is not a null reference nothing in visual basic and is not an instance of the same class as the current permission

    參數不為空引用(在visual basic中為nothing ) ,並且不是與當前權限屬于相同類的實例。
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