Jump to content

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Find out more here. X
X


Photo

Function usage question


  • Please log in to reply
12 replies to this topic

#1 Mechaflash

Mechaflash

    Sons of Anarchy

  • Active Members
  • PipPipPipPipPipPip
  • 1,377 posts

Posted 22 February 2012 - 09:37 PM

I will allow one stab at my ignorance per user :)

Why doesn't $iOne evaluate?
$iApple = 0 $iOne = 0 _test($iApple) msgbox(0,"",$iOne) Func _test($iOne)     $iOne+=10     Return EndFunc

“Hello, ladies, look at your man, now back to me, now back at your man, now back to me. Sadly, he isn’t me, but if he stopped using ladies scented body wash and switched to Old Spice, he could smell like he’s me. Look down, back up, where are you? You’re on a boat with the man your man could smell like. What’s in your hand, back at me. I have it, it’s an oyster with two tickets to that thing you love. Look again, the tickets are now diamonds. Anything is possible when your man smells like Old Spice and not a lady. I’m on a horse.”







#2 BrewManNH

BrewManNH

    באָבקעס מיט קודוצ׳ה

  • MVPs
  • 9,549 posts

Posted 22 February 2012 - 09:45 PM

$iOne in your function is a local variable, unrelated to the global variable with the same name. You'd need to pass it ByRef for the function to update the Global variable.

EDIT:Actually the way you're doing it, you'd need to use a different variable name in the function call Func _test($iTwo), because the variable inside your function is actually referencing the $iApple variable that was passed to the function.

Edited by BrewManNH, 22 February 2012 - 09:47 PM.

If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to an XP machine, and I'm not going to.

 

How to ask questions the smart way!

 

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.
Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.
_FileGetProperty - Retrieve the properties of a file SciTE Toolbar - A toolbar demo for use with the SciTE editorGUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.
GUIToolTip UDF Demo - Demo script to show how to use the GUIToolTip UDF to create and use customized tooltips. Latin Square password generator

 

I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.


#3 Mechaflash

Mechaflash

    Sons of Anarchy

  • Active Members
  • PipPipPipPipPipPip
  • 1,377 posts

Posted 22 February 2012 - 09:46 PM

Then that makes me ask... why is it required to declare the same amount of arguments as there are passed from the function? What's the point of it?

For example:
$iApple = 0 $iOne = 0 _test($iApple) msgbox(0,"",$iOne) Func _test($iOne, $iTwo)   $iOne+=10      Return EndFunc


$iApple = 0 $iOne = 0 _test($iApple) msgbox(0,"",$iOne) Func _test()   $iApple+=1    Return EndFunc


Neither are allowed because of

ERROR: _test() called by a previous line with 1 arg(s)


Edited by mechaflash213, 22 February 2012 - 09:50 PM.

“Hello, ladies, look at your man, now back to me, now back at your man, now back to me. Sadly, he isn’t me, but if he stopped using ladies scented body wash and switched to Old Spice, he could smell like he’s me. Look down, back up, where are you? You’re on a boat with the man your man could smell like. What’s in your hand, back at me. I have it, it’s an oyster with two tickets to that thing you love. Look again, the tickets are now diamonds. Anything is possible when your man smells like Old Spice and not a lady. I’m on a horse.”

#4 BrewManNH

BrewManNH

    באָבקעס מיט קודוצ׳ה

  • MVPs
  • 9,549 posts

Posted 22 February 2012 - 09:48 PM

Not sure what you mean, please explain.

If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to an XP machine, and I'm not going to.

 

How to ask questions the smart way!

 

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.
Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.
_FileGetProperty - Retrieve the properties of a file SciTE Toolbar - A toolbar demo for use with the SciTE editorGUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.
GUIToolTip UDF Demo - Demo script to show how to use the GUIToolTip UDF to create and use customized tooltips. Latin Square password generator

 

I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.


#5 Jos

Jos

    oh joy ...

  • Developers
  • 22,534 posts

Posted 22 February 2012 - 09:50 PM

That isn't required as you have the option for optional parameters and is totally unrelated.
Default is that the value is passed down to the Func and you cannot screw up the original content of the Variable used in the Func call.

Edited by Jos, 22 February 2012 - 09:50 PM.

Visit the SciTE4AutoIt3 Download page for the latest versions                                                                 Forum Rules
 
Live for the present,
Dream of the future,
Learn from the past.
  :)


#6 Mechaflash

Mechaflash

    Sons of Anarchy

  • Active Members
  • PipPipPipPipPipPip
  • 1,377 posts

Posted 22 February 2012 - 09:52 PM

See my example from the previous post.
“Hello, ladies, look at your man, now back to me, now back at your man, now back to me. Sadly, he isn’t me, but if he stopped using ladies scented body wash and switched to Old Spice, he could smell like he’s me. Look down, back up, where are you? You’re on a boat with the man your man could smell like. What’s in your hand, back at me. I have it, it’s an oyster with two tickets to that thing you love. Look again, the tickets are now diamonds. Anything is possible when your man smells like Old Spice and not a lady. I’m on a horse.”

#7 Jos

Jos

    oh joy ...

  • Developers
  • 22,534 posts

Posted 22 February 2012 - 09:56 PM

See my example from the previous post.

Have you RTFMed at all before asking these questions?
It seems to me pretty clear that it is impossible to call a FUNC with a Pararmeter and have the FUNC declared without any.

Visit the SciTE4AutoIt3 Download page for the latest versions                                                                 Forum Rules
 
Live for the present,
Dream of the future,
Learn from the past.
  :)


#8 Mechaflash

Mechaflash

    Sons of Anarchy

  • Active Members
  • PipPipPipPipPipPip
  • 1,377 posts

Posted 22 February 2012 - 10:30 PM

Have you RTFMed at all before asking these questions?


There's your one poke :) . I have the help file in front of me about the Func... Return ... EndFunc operation. I'm sorry that I don't get it as I've scripted mainly in windows batch, and functions technically don't exist, you can mimic them however, but it doesn't follow all the same rules as AutoIT has for functions.

I think I got it now tho... tell me if I'm wrong:

$iApple gets passed as an argument and $iOne captures it, no matter what.

If you don't declare Const or ByRef, $iOne doesn't change $iApple, however, you can perform operations against $iApple in the function.

If $iOne is declared a Const in the function, nothing is allowed to change it, however you can still change the value of $iApple.

If $iOne is declared as a ByRef, whatever $iOne evaluates to is mirrored to $iApple inside and outside of the function.

And am I right to say that RTFM evaluates to "Read The Fucking Manual" ? If not sorry for cussing ;)

Edited by mechaflash213, 22 February 2012 - 10:32 PM.

“Hello, ladies, look at your man, now back to me, now back at your man, now back to me. Sadly, he isn’t me, but if he stopped using ladies scented body wash and switched to Old Spice, he could smell like he’s me. Look down, back up, where are you? You’re on a boat with the man your man could smell like. What’s in your hand, back at me. I have it, it’s an oyster with two tickets to that thing you love. Look again, the tickets are now diamonds. Anything is possible when your man smells like Old Spice and not a lady. I’m on a horse.”

#9 Melba23

Melba23

    I'm old - what's your excuse?

  • Moderators
  • 19,886 posts

Posted 22 February 2012 - 10:32 PM

mechaflash213,

You might find the Variables - using Global, Local and ByRef tutorial in the Wiki useful reading. :)

M23
StringSize - Automatically size controls to fit text                                                               ExtMsgBox - A user customisable replacement for MsgBox
Toast - Small GUIs which pop out of the Systray                                                                Marquee - Scrolling tickertape GUIs
Scrollbars - Automatically sized scrollbars with a single command                                   GUIFrame - Subdivide GUIs into many adjustable frames
GUIExtender - Extend and retract multiple sections within a GUI                                      NoFocusLines - Remove the dotted focus lines from buttons, sliders, radios and checkboxes
ChooseFileFolder - Single and multiple selections from specified path tree structure      Notify - Small notifications on the edge of the display
Date_Time_Convert - Easily convert date/time formats, including the language               GUIListViewEx - Insert, delete, move, drag, sort and edit ListView items

#10 Mechaflash

Mechaflash

    Sons of Anarchy

  • Active Members
  • PipPipPipPipPipPip
  • 1,377 posts

Posted 22 February 2012 - 10:38 PM

Melba23

Just to be clear, if you just assign a value to a variable before declaring it, it is defaulted to a Global type? Same with DIM ing a variable?
“Hello, ladies, look at your man, now back to me, now back at your man, now back to me. Sadly, he isn’t me, but if he stopped using ladies scented body wash and switched to Old Spice, he could smell like he’s me. Look down, back up, where are you? You’re on a boat with the man your man could smell like. What’s in your hand, back at me. I have it, it’s an oyster with two tickets to that thing you love. Look again, the tickets are now diamonds. Anything is possible when your man smells like Old Spice and not a lady. I’m on a horse.”

#11 Melba23

Melba23

    I'm old - what's your excuse?

  • Moderators
  • 19,886 posts

Posted 22 February 2012 - 10:43 PM

mechaflash213,

It is best not to use Dim as it forces AutoIt to determine the scope of the variable using its own simplistic logic - within a function = Local, elsewhere = Global. So merely declaring a variable does not set its scope to Global unless it is outside a function. It is much better coding practise to declare the scope explicitly yourself - then you can be sure that you have what you want. :)

M23
StringSize - Automatically size controls to fit text                                                               ExtMsgBox - A user customisable replacement for MsgBox
Toast - Small GUIs which pop out of the Systray                                                                Marquee - Scrolling tickertape GUIs
Scrollbars - Automatically sized scrollbars with a single command                                   GUIFrame - Subdivide GUIs into many adjustable frames
GUIExtender - Extend and retract multiple sections within a GUI                                      NoFocusLines - Remove the dotted focus lines from buttons, sliders, radios and checkboxes
ChooseFileFolder - Single and multiple selections from specified path tree structure      Notify - Small notifications on the edge of the display
Date_Time_Convert - Easily convert date/time formats, including the language               GUIListViewEx - Insert, delete, move, drag, sort and edit ListView items

#12 JohnQSmith

JohnQSmith

    Universalist

  • Active Members
  • PipPipPipPipPip
  • 262 posts

Posted 23 February 2012 - 03:18 PM

And am I right to say that RTFM evaluates to "Read The Fucking Manual" ?


That could be one interpretation, although I prefer "Read The Fantastic Manual".

Whenever someone says "pls" because it's shorter than "please", I say "no" because it's shorter than "yes".


#13 Jos

Jos

    oh joy ...

  • Developers
  • 22,534 posts

Posted 23 February 2012 - 04:14 PM

The F in RTFM could be many of which one is Fucking, but I always use one of these variations:Funny/Fancy/Fantastic ..... :)

Visit the SciTE4AutoIt3 Download page for the latest versions                                                                 Forum Rules
 
Live for the present,
Dream of the future,
Learn from the past.
  :)





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users