if { [info exists ::origin_dir_loc]} { set origin_dir $::origin_dir_loc } set _xil_prj_name_ "prj" if { [info exits ::user_project_name]} { set _xil_prj_name_ $::user_project_name } variable script_file set script_file "prj.tcl" proc print_help {} { variable script_fi...
For those looking into mid-range options, check out the Hisense U80G or for higher-end, the best Sony TV models stand out for their advanced smart features. For those desiring a seamless integration of devices, a top Roku TV could be the ideal solution, offering extensive connectivity and ...
为了查找一个变量是否存在,可以使用tcl的info exists命令,例如说,为了查看变量total_cells是否存在,键入: dc_shell> info exists total_cells 如果变量存在,则info exists返回1,否则,返回0。 为了查看变量是否与特定的类型相匹配,使用Tcl的脚本info vars命令,例如 dc_shell> info vars total_c* total_cells 数值变...
Example 1–17 Using info to determine if a variable exists. if {![info exists foobar]} { set foobar 0 } else { incr foobar } Example 7–6 on page 86 implements a new version of incr which handles this case. More about Math Expressions This section describes a few fine points about ...
proc lprepend {varName args} { upvar 1 $varName var # Ensure that the variable exists and contains a list lappend var # Now we insert all the arguments in one go set var [eval [list linsert $var 0] $args]} 最后一行可以写成: ...
proc lprepend {varName args} { upvar 1 $varName var # Ensure that the variable exists and contains a list lappend var # Now we insert all the arguments in one go set var [eval [list linsert $var 0] $args]} 最后一行可以写成: ...
#set username "hanson" --Variable definitions set timeout 15 #---Supporting Functions--- # expect : wait fom some input # send : send something to th program # send_user :standard output # send_error :standard error # exit : Exit program...
label4“EN当我运行此程序并输入testuser凭据时，一切都运行得很好，并在登录状态小部件上生成带有绿色...
{ set a 30 global a puts "a=$a" } % P2 =>var1= 100 % P3\ =>var1 =100 % P4 ;#试图使用不存在的全局变量 =>can't read "var2": no such variable % P5 ;#在定义局部变量后试图引用同名全局变量 =>variable "a" already exists 还有另外一种方式来直接使用全局变量即用双冒号(::),见...
A Tcl array is a collection of variables. Each variable may hold any value and the array is indexed by arbitrary values. The key-value pairs are unordered. A Tcl array is an associative array. Creating arrays Tcl arrays can be created with thesetorarray setcommands. ...