Re: global variables

[Michal Studniarek]

I think the question was if you can define a global variable then change its value inside function and to have a new value available outside. 

In example:

global x=2;

function x=test()

 global x;

 x=4;

endfunction

Value of global variable x will be still 2. Function operates on global var x locally but can not change its value globaly.

Regards,

Michal

2014/1/21 Doug Stewart <address@hidden>

On Tue, Jan 21, 2014 at 9:32 AM, louis scott <address@hidden> wrote:

http://www.gnu.org/software/octave/doc/interpreter/Global-Variables.html

explains it, no you cannot.
"A global variable may only be initialized once in a global statement. "

So while you cannot change, you can set inside a function.

I think you are wrong.

You can can change its value in a function, otherwise why is it called a variable??

 

I admit, I never use them. I instead have a structure with state.

myvars.x = 22;

myvars.createfile = true;

myvars.madeitup_failure = makeitup(myvars, otherstuff);

function error_code = makeitup(statevars, otherstuff)
:
:

On Tue, Jan 21, 2014 at 2:16 PM, Jabcok <address@hidden> wrote:

Hello,

I would like to know if there is any possible way to change the value of global variable from the inside of the function in Octave?

Best regards.

Sławomir Jabłoński




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DAS

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