Maple訪問幫助系統(tǒng)【翻譯】.docx

1、訪問Maple幫助系統(tǒng)Accessing the Help System訪問幫助系統(tǒng)To access the Maple help system:要訪問Maple幫助系統(tǒng)： From the Help menu, select Maple Help.從“幫助”菜單中，選擇“楓葉幫助氣The Maple help system opens in a separate window. The window has two panes.The left pane contains the Help Navigator where you initiate searches or browse th

2、e table of contents, and the right pane displays help pages.Maple幫助系統(tǒng)將在單獨的窗口中打開。這窗戶有兩塊窗格。左側窗格包含幫助 導航器，您可以在其中啟動搜索或瀏覽日錄，右窗格顯示幫助頁面。Using the Help Navigator使用幫助導航器Use the search field in the Help Navigator to find information on Maple commands and features.使用幫助導航器中的搜索字段查找有關Maple命令和功能的信息。 Search for a kn

3、own help topic, a command name, or a keyword or phrase.搜索已知的幫助主題、命令名或關鍵字或短語。 If you have any add-on products, you can restrict the search to Maple, MapleSim, or any combination of those products and their add-ons.如果您有任何附加產品，您可以將搜索限制為Maple、MapleSim或這些產品及 其附加組件的任何組合。 You can search al 1 resources or l

4、imit the search to specific Page Types such as assistants, help pages, manuals, or Math Apps.您可以搜索所有資源或將搜索限制為特定的頁面類型，如助手、幫助頁、手冊 或數(shù)學應用程序。 Search results are displayed as a list in the Search Results tab of the left pane. The associated topic is displayed in the right pane. Some tutorials open in a Ma

5、ple window instead of in the Help window.搜索結果以列表形式顯示在左窗格的“搜索結果”選項卡中。關聯(lián)的主題將顯 示在右側窗格中。有些教程在楓樹窗口中而不是在“幫助”窗口中打開。 You can also select the Table of Contents tab to view a structured list of all topics in the help system. For details, see Table of Contents.您也可以選擇“目錄”選項卡查看幫助系統(tǒng)中所有主題的結構化列表。有關詳 細信息，請參閱目錄。Resou

6、rce Icons資源圖標 In the right pane, the type of resource is indicated by an icon. 在右窗格中，資源類型由圖標指示。Question mark indicates a help page.問號表示幫助頁。WS indicates an example worksheet or tutorial. These worksheets open in a Maple window.WS表示示例工作表或教程。這些工作表在一扇楓樹窗里打開。T indicates a task template.T表示任務模板。M indicate

7、s a manual.M表示手冊。D indicates a Math Dictionary term.D表示數(shù)學詞典術語。Viewing Help Pages as Worksheets將幫助頁作為工作表查看The Maple Help System allows you to open help pages as worksheets.Maple幫助系統(tǒng)允許您以工作表的形式打開幫助頁面。 With the help page displayed in the right pane of the help system, from the View menu, select Open Pag

8、e as Worksheet. A new worksheet window opens.幫助頁面顯示在幫助系統(tǒng)的右窗格中，從“視圖”菜單中選擇“打開頁面作為 工作表二將打開一個新的工作表窗口。 Alternately, click the Open current page as worksheet in the help system toolbar.或者，單擊“幫助系統(tǒng)”工具欄中的“打開當前頁面為工作表”。If you do not want to open the entire page as a worksheet, you can copy only the examples to

9、 a new worksheet. For details, see worksheet/expressions/copyexamplcs.如果不想將整個頁面作為工作表打開，則只能將示例復制到新工作表中。有關詳 細信息，請參見工作表/表達式/復制示例。2-D vs 1-D Math in Examples示例中的二維與一維數(shù)學You can choose to view the help page examples in either 1-D Maple Input or 2-D Math Input. This applies to the Examples section of all h

10、elp pages. By default, examples are displayed in 2-D math.您可以選擇在一維Maple輸入或二維數(shù)學輸入中查看幫助頁示例。這適用于所有 幫助頁的示例部分。默認情況下，示例以二維數(shù)學形式顯示。To switch between 2-D and 1-D math examples:要在二維和一維數(shù)學示例之間切換，請執(zhí)行以下操作: In the help system, go to the View menu. If Display Examples with 2D math input is selected, then examples w

11、ill display in 2-D math; otherwise examples display in 1-D.在幫助系統(tǒng)中，轉到“查看"菜單。如果選擇了 “使用二維數(shù)學輸入顯示示例”, 則示例將以二維數(shù)學顯示；否則，示例將以一維顯示。 Alternately, click on the 1-D/2-D Math button on the help system toolbar.或者，單擊“幫助系統(tǒng)”工具欄上的“一維/二維數(shù)學”按鈕。If the icon is highlighted, then examples will display in 2-D math. Othe

12、rwise, examples display in 1D math.如果圖標突出顯示，則示例將以二維數(shù)學形式顯示。否則，示例將以一維數(shù)學形 式顯示。沒有Maple等價物的SQL類型SQL types without a Maple Equivalent沒有Maple等價物的SQL類型 Many of the SQL types have Maple equivalents. However, a few types do not map easily to Maple. In those cases, Database attempts to generate the best match

13、possible. Descriptions of the matches follow.許多SQL類型都有Maple等價物。但是，有一些類型不容易映射到Maple。在 這些情況下，數(shù)據(jù)庫會嘗試生成可能的最佳匹配。下面是對火柴的描述。 As Maple has no time or date type, the DATE, TIME, and TIMESTAMP SQL types need a representation. Database uses the number of seconds since epoch, stored as a numeric. With Maple arb

14、itrary precision floats, this representation unifies the three SQL types into one Maple type with enough accuracy to support TIMESTAMP* s nanosecond precision. Notice that these types have a limited accuracy (most notably DATE, which is only accurate to the day, a range of 86400 seconds), so the num

15、eric that is passed for one of these formats may be different from the value that is returned.由于Maple沒有時間或日期類型，因此日期、時間和時間戳SQL類型需要一個 表示。數(shù)據(jù)庫使用epoch以來的秒數(shù)，以數(shù)字形式存儲。使用Maple任意精度浮點， 這種表示將三種SQL類型統(tǒng)一為一種Maple類型，其精度足以支持時間戳的納秒精度。 請注意，這些類型的精度有限(最明顯的是日期，它只精確到當天，范圍為86400 秒)，因此為這些格式之一傳遞的數(shù)值可能與返回的值不同。Database represent

16、s BINARY, VARBINARY, and LONGVARBINARY as one dimensional Arrays of type integer'll.數(shù)據(jù)庫將BINARY. VARBINARY和LONGVARBINARY表示為整數(shù)1類型的一維數(shù)組。Maple to SQLMaple 到 SQL When sending data to SQL, Maple attempts to determine the correct SQL type to use. This section discusses the conversion process and how to

17、 override the automatic detection. These conversions are used in calls to PreparedStatementExecute, UpdateData, and InsertRow.向SQL發(fā)送數(shù)據(jù)時，Maple會嘗試確定要使用的正確SQL類型。本節(jié)討論轉換 過程以及如何覆蓋自動檢測。這些轉換用于調用PreparedStatementExecute > UpdateData 和 InsertRowo Integers are converted to TINYINT, SMALLINT, INTEGER, BIGINT

18、, or NUMERIC, depending on the value of the integer.根據(jù)整數(shù)的值，將整數(shù)轉換為 TINYINT.SMALLINT. INTEGER. BIGINT 或 NUMERIC0 Numerics are converted to DOUBLE or NUMERIC, depending on the value of the numeric. Only the magnitude, and not the accuracy, of the number is used when determining which type to use. If th

19、e type chosen by Database does not have sufficient accuracy, then an explicit cast must be used. A numeric value representing a DATE, TIME, or TIMESTAMP requires an explicit cast.根據(jù)數(shù)字的值，數(shù)字轉換為雙精度或數(shù)字。在決定使用哪種類型時，只使用數(shù) 字的大小，而不是精度。如果數(shù)據(jù)庫選擇的類型沒有足夠的精度，則必須使用顯式轉 換。表示日期、時間或時間戳的數(shù)值需要顯式轉換。 Strings are converted to

20、 VARCHAR or LONGVARCHAR, depending on the length of the string.根據(jù)字符串的長度，將字符串轉換為VARCIIAR或LONGVARCIlARoValues of type Array( integerl ) are converted to VARBINARY or LONGVARBINARY, depending on the length of the array.類型為 Array (integerl)的值將轉換為 VARBINARY 或 LONGVARBINARY,具體 取決于數(shù)組的長度。Explicit Casts顯式強制轉

21、換 If the SQL type that Database selects is incorrect, you can override this behavior by using an explicit cast. To perform a cast, use : and the SQL type name you want to cast to. For example, 1:DOUBLE or 12346789:TIMESTAMP. Specifying an illegal cast is an error.如果數(shù)據(jù)庫選擇的SQL類型不正確，您可以使用顯式轉換重寫此行為。若要執(zhí) 行強制轉換，清使用：和要強制轉換到的SQL類型名稱。指定非法強制轉換是一個 錯誤。 The Result module UpdateData and InsertRow commands are able to look up column types, so using explicit casts is not required. However, looking up column types can require database access. This ca