文件名称:
Practical Programming in Tcl and Tk (英文版TCL学习资料 )
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文件大小: 1mb
下载次数: 2
上传时间: 2009-08-14
详细说明： 1. Tcl Fundamentals ............................................. 1 Getting Started ............................................................ 1 Tcl Commands ............................................................. 2 Hello World .............. .................................................... 3 Variables ......................................................................3 Command Substitution ................................................ 4 Math Expressions ........................................................ 4 Backslash Substitution ................................................ 6 Double Quotes ............................................................. 7 Procedures ................................................................... 7 A While Loop Example .................................................. 8 Grouping And Command Substitution ....................... 10 More About Variable Substitution .............................. 11 Substitution And Grouping Summary ........................ 11 Fine Points ................................................................. 12 Comments ................................................................. 13 Command Line Arguments ......................................... 13 Reference ................................................................... 14 Backslash Sequences ........................................... 14 Arithmetic Operators ........................................... 14 Built-in Math Functions ...................................... 15 Core Tcl Commands ............................................. 15 Predefined Variables ............................................ 18 2. Strings and Pattern Matching ......................... 19 The string Command .................................................. 19 Strings And Expresssions ........................................... 20 The append Command ............................................... 21 The format Command ................................................ 21 The scan Command ................................................... 23 String Matching ......................................................... 24 Regular Expressions .................................................. 25 The regexp Command ................................................ 26 The regsub Command ................................................ 28 Created: May 9, 1994 —bookTOC.doc—Copyright Prentice Hall—DRAFT: 1/13/95 ii 3. Tcl Data Structures .........................................29 More About Variables ................................................. 29 The unset command ............................................ 30 Using info to find out about variables ................... 30 Tcl Lists ..................................................................... 31 Constructing Lists: list, lappend, and concat .............. 32 Getting List Elements: llength, lindex, and lrange ....... 33 Modifying Lists: linsert and lreplace ........................... 34 Searching Lists: lsearch ............................................. 34 Sorting Lists: lsort ...................................................... 35 The split And join Commands .................................... 35 Arrays ........................................................................ 36 The array Command .................................................. 37 Environment Variables ............................................... 38 Tracing Variable Values ............................................. 39 4. Control Flow Commands .................................41 If Then Else ................................................................ 42 Switch ........................................................................ 43 Foreach ...................................................................... 44 While ......................................................................... 45 For ............................................................................. 46 Break And Continue ................................................... 46 Catch ......................................................................... 46 Error .......................................................................... 48 Return ....................................................................... 49 5. Procedures and Scope .....................................51 The proc Command .................................................... 51 Changing command names with rename .................... 52 Scope ......................................................................... 53 The global Command ................................................. 53 Use Arrays for Global State ........................................ 55 Call By Name Using upvar .......................................... 55 Passing arrays by name ....................................... 56 The uplevel Command ................................................ 57 6. Eval ................................................................59 Eval And List ............................................................ ...展开收缩
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