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
The loop processes numbers 1 through 5 but skips number 3 using the continue command. The output shows all numbers except 3. continue in foreach LoopThis example uses continue in a foreach loop to skip certain elements in a list. continue_foreach.tcl ...
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...
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...
符号$ 变量置换;$符号后的内容会解析为变量,$a 表示取a的值 [] 命令置换; []内是一个独立的TCL语句 \ 反斜杠置换;换行符、空格、[、$等被TCL解释器当作特殊符号对待的字符, 加上反斜杠后变成普通字符。用\t表示TAB。 用\n表示换行符 "" TCL解释器对双引号中＄和[]符号会进行变量置换和命令置换。 {}...
In the for loop, and i == 6 In the for loop, and i == 7 In the for loop, and i == 8 In the for loop, and i == 9 Example 4.4: set i 0 while {$i < 10} { puts "In the while loop, and i == $i" incr i 1} ...
We'll start by walking through a "Hello World" application in Tkinter. This isn't the smallest one we could write, but has enough to illustrate some key concepts you'll need to know. from tkinter import * from tkinter import ttk root = Tk() frm = ttk.Frame(root, padding=10) frm....
In the for loop, and i == 6 In the for loop, and i == 7 In the for loop, and i == 8 In the for loop, and i == 9 Example 4.4: set i 0 while {$i < 10} { puts "In the while loop, and i == $i" incr i 1} ...
# We loop through each device in our list, one by one... foreach device $device_list { # Set each device's log file to be the name of the device... set file_name $device # we initiate the SSH connection eval spawn ssh $device -l *** match_max [expr 32 * 10...
array 91 Query array state and search through elements. binary 54 Convert between strings and binary data. break 77 Exit loop prematurely. catch 77 Trap errors. cd 115 Change working directory. clock 173 Get the time and format date strings. close 115 Close an open I/O stream. concat 61 ...