Re: goto label, no loop, Mathematica 6

*To*: mathgroup at smc.vnet.net*Subject*: [mg129595] Re: goto label, no loop, Mathematica 6*From*: Bill Rowe <readnews at sbcglobal.net>*Date*: Sat, 26 Jan 2013 17:00:26 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-newout@smc.vnet.net*Delivered-to*: mathgroup-newsend@smc.vnet.net

On 1/22/13 at 11:18 PM, stefanie.schubert at whu.edu (bob) wrote: >Hi, I'd like to write down my model (several cells) and afterwards >implement another version of that model. But as I use the same names >for variables, Mathematica has to "forget" former assignments. >A solution woul be something like that (which I don't know how to do >it in Mathematica unfortunately): >Switch=1 (*a variable that can be set to 1 or 2: tell matehmatica >to read only Part 1 (or 2)*) if Switch=2 goto label_switch2 Model >Part 1 (several cells) label_switch2 MOdel Part 2 (several cells) >But if I'm right, goto is usually used for loops, so that the order >is label - goto; but not as required here: goto label You cannot use Switch as a variable name since this is a built-in function. And it seems to me the built-in function does what you are describing without use of a goto operation. That is: Switch[x, 1, (code segment 1), 2, (code segment 2)] will run code segment 1 if x is one and code segment 2 if is 2. The code segments can be any number of function calls expressions joined with a semicolon that forms a Mathematica compound expression. Look at the documentation for Switch.