We go through list elements with theforeachcommand. Each loop cycle theitemvariable has the next value from the list of numbers. $ ./traverse1.tcl 1 2 3 4 5 6 7 8 9 Ouput of the example. In the second example we go through names of days using thewhileloop. ...
Returns a list consisting of elements first through last of list. If last is end, it selects all elements up to the end of list. lreplace list first last ?value value ...? Returns a new list formed by replacing elements first through last of list with zero or more new elements, eac...
We create a simplenumsarray and loop through it. array set nums { a 1 b 2 c 3 d 4 e 5 } We define a simple array. puts [array names nums] Thearray namesreturns a list containing the names (the keys) of all of the elements in the array. ...
set variable_name value In the setting of the variable "hdl_files" we used the list command to create a Tcl list from the text strings that follow it. As a simpler alternative, we could have used braces to enclose a set of strings: set hdl_files { ../constants_spartan.vhd ../compon...
I have this TCL a509dl and it's been driving me nuts. I've went through most of the forums, none of which I could understand fully. I have a folder full of tools that I barely can comprehend. and now I'm looking for a little bit of help. My goal... Loreao Thread Feb 20, ...
We'll start by walking through a "Hello World" application in Tkinter. This isn't the smallest one we could write, but has enough to illustrate some key concepts you'll need to know. from tkinter import * from tkinter import ttk root = Tk() frm = ttk.Frame(root, padding=10) frm....
if a channel is placed into nonblocking mode it will affect the operation of thechan gets,chan read,chan puts,chan flush, andchan closecommands; see the documentation for those commands for details. For nonblocking mode to work correctly, the application must be using the Tcl event loop (e....
In the for loop, and i == 6 In the for loop, and i == 7 In the for loop, and i == 8 In the for loop, and i == 9 Example 4.4: set i 0 while {$i < 10} { puts "In the while loop, and i == $i" incr i 1} ...
24、oop,andi=8Inthewhileloop,andi=9Example4.5:foreachvowelaeiouputs"$vowelisavowel"Output:aisavoweleisavoweliisavoweloisavoweluisavowelProceduresTcl的Procedures和c的函数差不多.它们有参数,它们返回值。基本定义方法是:procnameargListbody当一个procedure被定义,它就被看做是一个命令,如同Tcl的自带命令一样,...
$ ./forloop.tcl 0 1 2 3 4 5 6 7 8 9 Here we see the output of the forloop.tcl script. The foreach commandThe foreach command simplifies traversing over collections of data. It has no explicit counter. It goes through a list element by element and the current value is copied to...