標籤:問題: 去年用Pig進行了一系列報表和ETL的開發,感覺Pig很不錯,沒有Hive的嬌貴,又比粗糙的MapReduce來的精巧,很稱手。新年正好涉及以前的程式調整,藉此之機,對Pig寫的指令碼進行了最佳化。畢竟,越用越熟,越能發現Pig的魅力。 在整理以前的Pig程式裡,發現了一個問題,就是pig沒有提取資料集大小的功能,所以每次要取資料集條數的工作,總會遺留下如下代碼:curr_cnt = GROUP
標籤:leetcode java Divide two integers without using multiplication, division and mod operator.If it is overflow, return MAX_INT.時間複雜度 log(n)有個coner case dividend = -2147483648divisor = -1;答案是2147483647
標籤:本篇就開始講單點觸摸事件,我們在前面用UIPushButton做菜單那篇,就用了觸摸事件,只不過我們感覺不出來,我們基本不需要分析觸摸訊息。這篇我們用一個精靈模仿出按鈕效果,加強理解至於原理,廖大在文檔中講的很清楚,就不贅敘了。Quick的觸摸機制(點我點我(*^__^*))一般,我們按按鈕的時候,總會發現,按鈕按下去,按鈕會縮小,鬆開,按鈕會恢複原來的大小。 function MyScene:ctor()local sprite =
標籤: 目錄(?)[-]還有另外一個httpstackoverflowcomquestions6610709undefined-symbols-for-architecture-i386Undefined symbols for architecture i386 _OBJC_CLASS__SKPSMTPMessage referenced from
標籤:uvaPassword SearchBeing able to send encoded messages during World War II was very important to the Allies. The messages were always sent after being encoded with a known password. Having a fixed password was of course insecure, thus there was a