tcl - Understanding the usage of braces -


I am learning TCL / TAC and am confused with the use of curly braces in TCL.

It is being used to indicate the scope and declare the string for me. Is this a bug (or feature)?

Is my interpretation correct?

In short,

  • TCL's braces have single coats of sh Work like - group term (and lines) without launch
  • Dual quotes of TCL act as double quote marks - permission for launch.

The fact that you are not mandatory to use curly braces in the definition of proc is a convenient way to pass a script as a logic without interpolation. Arguments to

These are identical 

  proc add3 {abc} {return [expr {$ a + $ B + $ c}]}
< P> proc add3_weird [list ABC] "return \ [expr {\ set a] + \ [set b] + \ [set c]}]" < / Pre>

Once you quote TCL, you will realize how flexible TCL can actually be.


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