類方法命名除了以首字母大寫的駝峰式命名、底線分割等命名方式的規定外,還應該注意方法名的組織規則。一、對於dao類、針對某一特定對象比如String操作的工具類,一般應該以save、get等動詞開頭,即以“操作+對象”為命名方法,如getUser();二、對於包含多種對象或業務操作邏輯的業務類,個人認為以要操作的對象或者業務名開頭,加上操作,即以“對象+操作”為命名方法更合適,如userGet()。- by 一個農夫 -
問題起源於編程珠璣Column 12中的題目10,其描述如下:How could you select one of n objects at random, where you see the objects sequentially but you do not know the value of n beforehand? For concreteness, how would you read a text file, and select and print one random
最近在做效能測試,有大量的重複的操作,所以打算用bat檔案做指令碼。之前也用過bat檔案,但是都只是應用到一些簡單的功能。比如用%var%來指定環境變數,%0,%1來指代傳入的參數,用if來進行字串比較等等。今天通過網上搜尋,學會了三個新的功能。1. 用set /a 來進行數學計算,具體的文法如下:Add: SET /A Result = 12 + 4Subtract: SET /A Result = 23 - 7Multiply: SET /A Result = 8 * 2Integer
《The C++ Programming Language 3rd》中有這麼兩段話:from 4.3:A type wchar_ t is provided to hold characters of a larger character set such as Unicode. It is a distinct type. The size of wchar_t is implementation-defined and large enough to hold the largest
第一次寫部落格,分享一點經驗吧,平時大家用powerDesigner的時候,pd是不會把name項預設添加到comment的,所以產生的資料庫表裡面也沒有中文欄位的注釋.我在網上查了一下.有解決方案了.以下是網上的解決方案,我把它完善了一下.'使用方法使用方法'PowerDesigner->Tools->Execute Commands->Edit/Run Scripts可以儲存該指令碼為:name2comment.vbsCode highlighting produced
調試過debug版本的vc程式的人一定對0xCCCCCCCC和0xCDCDCDCD這樣的記憶體很有印象。這是debug版本的CRT為了方便偵錯工具,在分配出來還沒有初始化的時候提供的初始值。實際上,Windows上面還有更多這樣的初始值,見下表:Uninitialized BAADF00DUsed by Microsoft's LocalAlloc/GlobalAlloc/HeapAlloc(LMEM_FIXED) to mark uninitialised allocated heap
The TriangleDescription73 88 1 02 7 4 44 5 2 6 5(Figure 1)Figure 1 shows a number triangle. Write a program that calculates the highest sum of numbers passed on a route that starts at the top and ends somewhere on the base. Each
問題起源於編程珠璣Column 12中的題目10,其描述如下: How could you select one of n objects at random, where you see the objects sequentially but you do not know the value of n beforehand? For concreteness, how would you read a text file, and select and print one