tcl脚本学习三： “ ”和{} 的学习

lesson 3

example ①：

set Z "zhou li "
set Z_LABEL "is a boy "

puts "\n................. examples of differences between \" and \{"
puts "$Z_LABEL $Z"
puts {$Z_LABEL $Z}
// {}将会把括号里面的东西全部原封不动的输出

example ②：

puts "\n....... examples of differences in nesting \{ and \" "
puts "$Z_LABEL {$Z}"
puts {Who said, "What this country needs is a good $0.05 cigar!"?}
// 第二行可以看出将{$Z}化简即为$Z, 所以第二行结果自然可将$Z所对应的变量输出，而不是直接输出
//第三行是“ 和\的嵌套使用： 谁在外面谁就有最终的控制权