Loop Break, Return

[whynotregister]

Code: Select all

Loop
{
  If A_Index = 10
  Break 
}
...
Return

Loop
{
  If A_Index = 10
  Return 
}
...
Return

Both codes have the same exit point, but which one is more stable? I'm wondering which one is more stable, break or return, when I need to exit the loop under some circumstances.

[boiler]

It's not a matter of stability. It's a matter of how the code is supposed to flow when exiting the loop. You would choose break or return to do very specific things. You would use break to have it continue executing the commands below the loop, and you would use return to return back to where it was called from (or to exit the script if it was not called by something).

Examples:

Code: Select all

Loop
{
  If A_Index = 10
  Break 
}
MsgBox, This gets executed
Return

Code: Select all

Loop
{
  If A_Index = 10
  Return 
}
MsgBox, This does not get executed
Return

[whynotregister]

It's not a matter of stability. It's a matter of how the code is supposed to flow when exiting the loop. You would choose break or return to do very specific things. You would use break to have it continue executing the commands below the loop, and you would use return to return back to where it was called from (or to exit the script if it was not called by something).

Examples:

Code: Select all

Loop
{
  If A_Index = 10
  Break 
}
MsgBox, This gets executed
Return

Code: Select all

Loop
{
  If A_Index = 10
  Return 
}
MsgBox, This does not get executed
Return

It seems I didn't write the question specifically.

Code: Select all

Loop
{
  IfExist,A.exe
  {
    LabelSuspend = 1
    break
  }
}
If LabelSuspend = 1
Return
 
Loop
{
  IfExist,A.exe
  {
    Return
  }
}
Return

For example, when need to find a certain condition in a loop and use Return according to the condition, I wonder if break > return is stable or if it is stable to return immediately.
Because I was wondering if using return instead of break > return to immediately exit the loop could cause goto-like instability.

[boiler]

Because I was wondering if using return instead of break > return to immediately exit the loop could cause goto-like instability.

It does not. When you return from directly inside a loop, the script doesn't think that you're still inside the loop for any reason.

[whynotregister]

Because I was wondering if using return instead of break > return to immediately exit the loop could cause goto-like instability.

It does not. When you return from directly inside a loop, the script doesn't think that you're still inside the loop for any reason.

thank you for answer