標籤:正在生產線上跑著web前端是nginx+tomcat,現在有這樣一個需求,需要對網站的單品頁面和列表頁設定緩衝,不同的版面設定不同的緩衝,但是由於開始沒有安裝ngx_cache_purge這個模組,現在沒法直接往設定檔裡邊寫,這時候,就需要線上安裝ngx_cache_purge此模組,下邊就說下怎麼線上編譯安裝新模組。安裝步驟:1.首先看下核心和系統的版本號碼。[[email protected] ~]# uname -a Linux vmware1 2.6.18-30
標籤:Postorder: first, visit left child, then, parent, last, is to visit right child.The postorder traversal result of above tree is {4,6,5,2,3,1}.Key different here is that we print right child before we print parent node. Therefore, we need a mark
標籤:UIImagePickerController簡單使用UIImagePickerController用於管理可自訂的,系統支援的用於擷取裝置片和視頻的使用者介面。同時可以用於在App中選擇儲存的圖片和視頻。一個UIImagePickerController系統管理使用者互動並且將這些互動結果傳遞給一個代理對象。該類不能被繼承和修改,除了自訂cameraOverlayView外。UIVideoEditorControllerMedia Capture and Access to
標籤:QuestionThere are a total of n courses you have to take, labeled from 0 to n - 1.Some courses may have prerequisites, for example to take course 0 you have to first take course 1, which is expressed as a
標籤:Given a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T.Each number in C may only be used once in the combination.Note:All
標籤:[Problem]You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list.Input: (2 -> 4 -> 3