如何在TCL中组合两个字符串？

Question

我在tcl中有以下代码：

set string1 "do the firstthing"
set string2 "do the secondthing"

如何将两个字符串组合成"do the firstthing do the secondthing"

Answer 1

您可以像这样使用append：

% set string1 "do the firstthing"
% set string2 "do the secondthing"
% append string1 " " $string2
% puts $string1
do the firstthing do the secondthing

你可以将它们放在另一个旁边......

% set string1 "do the firstthing"
% set string2 "do the secondthing"
% puts "$string1 $string2"
do the firstthing do the secondthing

或者，如果您的字符串位于列表中，则可以使用join并指定连接符...

% set listofstrings [list "do the firstthing" "do the secondthing"]
% puts [join $listofthings " "]
do the firstthing do the secondthing

Answer 2

tcl中的字符串连接只是并置

set result "$string1$string2"
set result $string1$string

Answer 3

使用append命令：

set string1 "do the firstthing"
set string2 "do the secondthing"
append var $string1 "," $string2
puts $var
# Prints do the firstthing,do the secondthing