April 2014
Beginner to intermediate
830 pages
15h 21m
Chinese
Content preview from Mathematica 錦囊妙計
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18.10 客製化前端介面
|
735
若程式碼希望供
目前登入的使用者
於前端介面開啟時自動執行，請將程式碼置於以下
檔案（使用者層級）：
當然，以上的結果將隨著作業系統而不同。
在這些初始檔中，你可以改變
$Epilog
系統變數，Mathematica 將於運算核心結束前執
行此變數。
討論說明
如果你經常使用某些自訂指令或常數，以上方式可確保每次 Mathematica 執行期都自動
定義它們。例如，每次執行 Mathematica 時，你總是需要用到
Essential`
套件，只要將
Needs["Essential`"]
程式碼加入使用者層級的
init.m
中即可。
請注意使用者層級的初始檔會執行在系統層級的初始檔之後，因此你可以善用此點，覆
蓋某些系統層級的定義。
延伸資訊
訣竅 18.10 介紹了
init.m
與
$Epilog
系統變數的使用範例。
關於
init.m
檔案的使用，詳見 Mathematica 教學文件
ref/file/init.m
。[Page-739]
18.10 客製化前端介面
問題點
在使用者執行表示式與前端介面進行處理之間，你想插入某些運算。
ch18.indd 735 2014/4/2 下午 04:52:13
736
|
第十八章
解決方案
藉 由 定 義
$PreRead
、
$Pre
、
$Post
、
$PrePrint ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.