If后面的{一定要写在上一行,如果不这样TCL解释器会认为if命令在换行符处已结束,下一行会被当成新的命令,从而导致错误的结果。此外if和{之间需要有个空格,否则TCL会把if{当成一个整体,从而导致错误。 whiletest body Test是一个表达式,body是一个脚本,如果表达式的值非0,就运行脚本,直到表达式为0才停止循环。 fo...
Info命令提供了查看TCL解释器信息的手段,有超过一打的选项。 例如info exist a info global tcl命令提供了trace命令来跟踪一个或多个变量。
从这一讲开始,我们要越来越多地和 HyperMesh 打交道啦。 通过上一期的基础培训,相信大家应该了解了一些编程的基本概念了吧,比如变量,字符串,if 和 for 等等。如果忘记了赶紧点击下方链接复习一下上期内容吧~ 首先要声明一下,如果有同学希望通过复 制粘贴来实践一下本文中的代码,记得将双引号删掉再重新输入一下。
Now you need to act as a program syntax searcher. I will tell you the type of program and ask you a related syntax question. Please think step by step to ensure that your answer is accurate. If examples are provided, please execute them silently first, then show the example and make su...
if {$exist != ""} { puts "localproc does exist at point 2" } localproc; 1.5:解释器状态-info 1.关于当前解释器状态信息命令列表 序号 命令 描述 1 info cmdcount 返回解释器已经运行的命令的数量 2 info level ?number? 返回相应栈级别的过程的名字和参数 ...
if {[info exists testVar]} { puts "$variable Exists" } else { puts "$variable Does Not Exist" } } set x 1 set y 2 for {set i 0} {$i < 5} {incr i} { set a($i) $i; } puts "\ntesting unsetting a simple variable" ...
if {[hm_entityinfo exist loadcols "force_$dent_resistance_hm::i" -byname] == 1} { *createmark loadcols 1 "by name only" "load_force_$dent_resistance_hm::i" *deletemark loadcols 1 *createmark loadcols 1 "by name only" "unload_force_0N_$dent_resistance_hm::i" ...
if {![set ::tcltest::testConstraints($what)]} { skiptest " (constraint $what)" } return } if {$type eq "cmd"} { # Does it exist already? if {[info commands $what] ne ""} { return } if {$packages eq ""} { ...
proc needscmdcheck {what {packages {}}} { # Does it exist already? if {[info commands $what] ne ""} { return 1 } if {$packages eq ""} { # e.g. exec command is in exec package set packages $what } foreach p $packages { catch {package require $p} ...
使用Tcl regexp匹配空字符串可以使用以下正则表达式:"^$" 解析: - 正则表达式的起始符号"^"表示匹配字符串的开头; - 中间的"$"表示匹配字符串的结尾; - "$"之前的"^"表示...