Should += work inside a function?

[JSThePatriot]

Was trying to perform a simple operation inside the INIWrite function. I at least thought it was simple. I was trying to use the operator += inside the INIWrite function and it failed.

Non-working...

INIWrite("RestartPC.ini", "RestartPCSettings", "iteration", $i_Iteration += 1)oÝ÷ Ùj+)àjëh×6  $i_Iteration += 1
    INIWrite("RestartPC.ini", "RestartPCSettings", "iteration", $i_Iteration)

Is this expected behavior? I haven't the time to test in other functions, but I thought it would/should work.

Thanks,

Jarvis

[GEOSoft]

Was trying to perform a simple operation inside the INIWrite function. I at least thought it was simple. I was trying to use the operator += inside the INIWrite function and it failed.

Non-working...

INIWrite("RestartPC.ini", "RestartPCSettings", "iteration", $i_Iteration += 1)oÝ÷ Ùj+)àjëh×6  $i_Iteration += 1
    INIWrite("RestartPC.ini", "RestartPCSettings", "iteration", $i_Iteration)

Is this expected behavior? I haven't the time to test in other functions, but I thought it would/should work.

Thanks,

Jarvis

Don't see why it would/should work. IniWrite() is really looking for a string there although it will accept a number the number will be handled as a string so you can't perform a math operation inside the function call.

[Josbe]

IMO, this behavior it's expected, because works like an assignation not like an unary operator. The same reason why this don't works:

INIWrite("RestartPC.ini", "RestartPCSettings", "iteration", $i_Iteration = 1)

edit1: typo.

Edited January 7, 2009 by Josbe

[Jos]

in this case I would expect it to look like this: INIWrite("RestartPC.ini", "RestartPCSettings", "iteration", $i_Iteration + 1),

because this is not a common way of doing it: INIWrite("RestartPC.ini", "RestartPCSettings", "iteration", $i_Iteration = $i_Iteration + 1)

Edited January 7, 2009 by Jos

[PsaltyDS]

Was trying to perform a simple operation inside the INIWrite function. I at least thought it was simple. I was trying to use the operator += inside the INIWrite function and it failed.

Is this expected behavior? I haven't the time to test in other functions, but I thought it would/should work.

Thanks,

Jarvis

I think there is a difference between the two:

Assignment, where a value is assigned to a variable but there is no external return value.

Evaluation, where a value is returned from an operation, but not assigned to a variable.

Inside a function you can use the returned value from evaluation as a parameter, but attempted assignment triggers syntax errors.

Don't see why it would/should work. IniWrite() is really looking for a string there although it will accept a number the number will be handled as a string so you can't perform a math operation inside the function call.

Native AutoIt functions expecting strings effectively perform String() on whatever they are given, which can be the evaluation of a math expression (including variable values), as long as there is no assignment in it. This would work:

IniWrite($sIniFile, "Math_Section", "Cube_Root_Of_" & $i & "_Squared", ($i ^ 2) ^ -3)

Edited January 7, 2009 by PsaltyDS

[GEOSoft]

By the way whats wrong with just using the + operation?

INIWrite("RestartPC.ini", "RestartPCSettings", "iteration", $i_Iteration +1)

NM, Just your everyday bad idea.

Edited January 7, 2009 by GEOSoft

[JSThePatriot]

in this case I would expect it to look like this: INIWrite("RestartPC.ini", "RestartPCSettings", "iteration", $i_Iteration + 1),

because this is not a common way of doing it: INIWrite("RestartPC.ini", "RestartPCSettings", "iteration", $i_Iteration = $i_Iteration + 1)

Jos

This would seem to be the solution I was looking for as I don't really care if $i_Iteration has a new value or not. I just want the new value in the file. However, I added () to the equation, and I would have thought that to fix the assignment operation as I have used $i += somenumber inside other functions. I don't have any examples off the top of my head, and I could be mistaken, which is why I brought it here to the community.

I have it working, but I might just change it to your suggestion Jos as it makes more sense to me as to what I really want done.

Thanks for all the replies!

Jarvis