TCL有一些功能指针的概念吗？ [英] Does TCL have some concept of function pointers?

问题描述

使用TCL，我想实现类似策略模式的功能。我想通过TCL功能打印输出的策略，所以我可以轻松地在打印到屏幕之间切换并打印到日志文件。在TCL中最好的方式是什么？

Working with TCL and I'd like to implement something like the Strategy Pattern. I want to pass in the "strategy" for printing output in a TCL function, so I can easily switch between printing to the screen and printing to a log file. What's the best way to do this in TCL?

推荐答案

TCL允许您将过程的名称存储在变量中，然后使用该变量调用过程;所以

TCL allows you to store the name of a procedure in a variable and then call the procedure using that variable; so

proc A { x } {
   puts $x
}

set strat A
$strat Hello

将调用proc A并打印出你好

will call the proc A and print out Hello

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