本章介紹Scala對XML的支援,包括的主要內容參考本文一級標題。 有關半結構化資料的概念和XML格式的說明就跳過了,直接進入Scala中XML相關的文法和使用。 一、XML文法 在Scala命令列中可以直接輸入以個Tag開頭,編譯器會自動進入XML輸入模式,直到遇到匹配該Tag的結束標誌為止。如下所示: scala> <a> | This is some XML. | Here is a tag: <atag/>
Qt的SDK裡包含一個很幫的GUI工具,可以方便我們進行這類轉換並測試你的運算式。可以按照如下的方式開啟:“開始”->“程式”->“Qt SDK by Nokia v2010.02.1 (open source)”->“QtDemo”->“Tools”->“RegularExpression”可以選擇“launch”啟動程式,亦可以“Documentation”查看源檔案。 QRegExp::QRegExp (
題意:給你一個數,叫你求這個數的最大的素數因子在素數表中的位置。 Largest prime factor Time Limit: 5000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description Everybody knows any
Description A histogram is a polygon composed of a sequence of rectangles aligned at a common base line. The rectangles have equal widths but may have different heights. For example, the figure on the left shows the histogram that
Description Given a sequence, {A1, A2, ..., An} which is guaranteed A1 > A2, ..., An, you are to cut it into three sub-sequences and reverse them separately to form a new one which is the smallest
Description The massive tsunami that struck the coastal city has washed away many of inhabitants and facilities there. After the tsunami, the power supply facilities of the
Description In the world of telecommunications phone calls to different phone numbers have to be charged using different rate or different billing plan. International Carrier of Phone Communications (ICPC) has an antique billing