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Check that function exists


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#1 ·  Posted

Hey guys,

I know that you can check to see whether a variable has been declared by using the function IsDeclared. Is there a similar function that can tell me whether a function exists?

Thanks.


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#2 ·  Posted

Unless I am missing what you're asking, SciTe should tell you if it detects a missing function when you try to Run/Compile. Otherwise, I would think you could check with CTRL + F5 (SyntaxCheck Prod).


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#3 ·  Posted

Alt + L also shows the UDF's on the active sheet...helpful to keep from scrolling up and down.


IEbyXPATH-Grab IE DOM objects by XPATH IEscriptRecord-Makings of an IE script recorder ExcelFromXML-Create Excel docs without excel installed GetAllWindowControls-Output all control data on a given window.

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#4 ·  Posted

IsDeclared should ideally be used when it's a last resort, though I've never used myself (did back a couple of years ago but that was bad!) Though I can't understand if you would like to know whether or not you've written a function, could you explain?


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_AdapterConnections()_AlwaysRun()_AppMon()_AppMonEx()_BinaryBin()_CheckMsgBox()_CmdLineRaw()_ContextMenu()_ConvertLHWebColor()/_ConvertSHWebColor()_DesktopDimensions()_DisplayPassword()_DotNet_Load()/_DotNet_Unload()_Fibonacci()_FileCompare()_FileCompareContents()_FileNameByHandle()_FilePrefix/SRE()_FindInFile()_GetBackgroundColor()/_SetBackgroundColor()_GetConrolID()_GetCtrlClass()_GetDirectoryFormat()_GetDriveMediaType()_GetFilename()/_GetFilenameExt()_GetHardwareID()_GetIP()_GetIP_Country()_GetOSLanguage()_GetSavedSource()_GetStringSize()_GetSystemPaths()_GetURLImage()_GIFImage()_GoogleWeather()_GUICtrlCreateGroup()_GUICtrlListBox_CreateArray()_GUICtrlListView_CreateArray()_GUICtrlListView_SaveCSV()_GUICtrlListView_SaveHTML()_GUICtrlListView_SaveTxt()_GUICtrlListView_SaveXML()_GUICtrlMenu_Recent()_GUICtrlMenu_SetItemImage()_GUICtrlTreeView_CreateArray()_GUIDisable()_GUIImageList_SetIconFromHandle()_GUIRegisterMsg()_GUISetIcon()_Icon_Clear()/_Icon_Set()_IdleTime()_InetGet()_InetGetGUI()_InetGetProgress()_IPDetails()_IsFileOlder()_IsGUID()_IsHex()_IsPalindrome()_IsRegKey()_IsStringRegExp()_IsSystemDrive()_IsUPX()_IsValidType()_IsWebColor()_Language()_Log()_MicrosoftInternetConnectivity()_MSDNDataType()_PathFull/GetRelative/Split()_PathSplitEx()_PrintFromArray()_ProgressSetMarquee()_ReDim()_RockPaperScissors()/_RockPaperScissorsLizardSpock()_ScrollingCredits_SelfDelete()_SelfRename()_SelfUpdate()_SendTo()_ShellAll()_ShellFile()_ShellFolder()_SingletonHWID()_SingletonPID()_Startup()_StringCompact()_StringIsValid()_StringRegExpMetaCharacters()_StringReplaceWholeWord()_StringStripChars()_Temperature()_TrialPeriod()_UKToUSDate()/_USToUKDate()_WinAPI_Create_CTL_CODE()_WinAPI_CreateGUID()_WMIDateStringToDate()/_DateToWMIDateString()Au3 script parsingAutoIt SearchAutoIt3 PortableAutoIt3WrapperToPragmaAutoItWinGetTitle()/AutoItWinSetTitle()CodingDirToHTML5FileInstallrFileReadLastChars()GeoIP databaseGUI - Only Close ButtonGUI ExamplesGUICtrlDeleteImage()GUICtrlGetBkColor()GUICtrlGetStyle()GUIEventsGUIGetBkColor()Int_Parse() & Int_TryParse()IsISBN()LockFile()Mapping CtrlIDsParseHeadersToSciTE()PasswordValidPasteBinPosts Per DayPreExpandQueue()Resource UpdateResourcesExSciTE JumpSettings INISHELLHOOKShunting-YardSignature CreatorStack()Stopwatch()StringAddLF()/StringStripLF()StringEOLToCRLF()VSCROLLWM_COPYDATAMore Examples...

 

 

Updated: 02/04/2015

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#5 ·  Posted

$func = call("Function")
if @error then msgbox(1,"Failure","There is no such function")

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#6 ·  Posted (edited)

OfChange,

Looking at Call it states...

Both @error and @extended may contain values if the called function set them.

Edited by guinness

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_AdapterConnections()_AlwaysRun()_AppMon()_AppMonEx()_BinaryBin()_CheckMsgBox()_CmdLineRaw()_ContextMenu()_ConvertLHWebColor()/_ConvertSHWebColor()_DesktopDimensions()_DisplayPassword()_DotNet_Load()/_DotNet_Unload()_Fibonacci()_FileCompare()_FileCompareContents()_FileNameByHandle()_FilePrefix/SRE()_FindInFile()_GetBackgroundColor()/_SetBackgroundColor()_GetConrolID()_GetCtrlClass()_GetDirectoryFormat()_GetDriveMediaType()_GetFilename()/_GetFilenameExt()_GetHardwareID()_GetIP()_GetIP_Country()_GetOSLanguage()_GetSavedSource()_GetStringSize()_GetSystemPaths()_GetURLImage()_GIFImage()_GoogleWeather()_GUICtrlCreateGroup()_GUICtrlListBox_CreateArray()_GUICtrlListView_CreateArray()_GUICtrlListView_SaveCSV()_GUICtrlListView_SaveHTML()_GUICtrlListView_SaveTxt()_GUICtrlListView_SaveXML()_GUICtrlMenu_Recent()_GUICtrlMenu_SetItemImage()_GUICtrlTreeView_CreateArray()_GUIDisable()_GUIImageList_SetIconFromHandle()_GUIRegisterMsg()_GUISetIcon()_Icon_Clear()/_Icon_Set()_IdleTime()_InetGet()_InetGetGUI()_InetGetProgress()_IPDetails()_IsFileOlder()_IsGUID()_IsHex()_IsPalindrome()_IsRegKey()_IsStringRegExp()_IsSystemDrive()_IsUPX()_IsValidType()_IsWebColor()_Language()_Log()_MicrosoftInternetConnectivity()_MSDNDataType()_PathFull/GetRelative/Split()_PathSplitEx()_PrintFromArray()_ProgressSetMarquee()_ReDim()_RockPaperScissors()/_RockPaperScissorsLizardSpock()_ScrollingCredits_SelfDelete()_SelfRename()_SelfUpdate()_SendTo()_ShellAll()_ShellFile()_ShellFolder()_SingletonHWID()_SingletonPID()_Startup()_StringCompact()_StringIsValid()_StringRegExpMetaCharacters()_StringReplaceWholeWord()_StringStripChars()_Temperature()_TrialPeriod()_UKToUSDate()/_USToUKDate()_WinAPI_Create_CTL_CODE()_WinAPI_CreateGUID()_WMIDateStringToDate()/_DateToWMIDateString()Au3 script parsingAutoIt SearchAutoIt3 PortableAutoIt3WrapperToPragmaAutoItWinGetTitle()/AutoItWinSetTitle()CodingDirToHTML5FileInstallrFileReadLastChars()GeoIP databaseGUI - Only Close ButtonGUI ExamplesGUICtrlDeleteImage()GUICtrlGetBkColor()GUICtrlGetStyle()GUIEventsGUIGetBkColor()Int_Parse() & Int_TryParse()IsISBN()LockFile()Mapping CtrlIDsParseHeadersToSciTE()PasswordValidPasteBinPosts Per DayPreExpandQueue()Resource UpdateResourcesExSciTE JumpSettings INISHELLHOOKShunting-YardSignature CreatorStack()Stopwatch()StringAddLF()/StringStripLF()StringEOLToCRLF()VSCROLLWM_COPYDATAMore Examples...

 

 

Updated: 02/04/2015

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#7 ·  Posted

OfChange,

Looking at Call it states...

Hmm I guess I missed that. I apologize for the misleading post then

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#8 ·  Posted

The reason I am asking is because I am writing a script at the moment in which I am using an array to store the menu information (It helps a lot with customization in the way of languages and customization of hotkeys). I am placing the names of the functions that need to be called in this array, and then when I use GuiCtrlSetOnEvent, if the function named by the array element doesn't exist, it doesn't error.


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#9 ·  Posted

The reason I am asking is because I am writing a script at the moment in which I am using an array to store the menu information (It helps a lot with customization in the way of languages and customization of hotkeys). I am placing the names of the functions that need to be called in this array, and then when I use GuiCtrlSetOnEvent, if the function named by the array element doesn't exist, it doesn't error.

Then make sure you use the right function names inside the array from the beginning. :)

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#10 ·  Posted (edited)

Do you sometimes read the help file :)

It clearly states:

"Sets @error to 0xDEAD and @extended to 0xBEEF if the function does not exist or invalid number of parameters."

$var = "Test1"
Call($var)
$Er = @error
$Ex = @extended
ConsoleWrite("$Er: " & $Er & " (dec), " & Hex($Er, 4) & " (hex); $Ex: " & $Ex & " (dec), " & Hex($Ex, 4) & " (hex)" & @CRLF)

Call("Test2")
$Er = @error
$Ex = @extended
ConsoleWrite("$Er: " & $Er & " (dec), " & Hex($Er, 4) & " (hex); $Ex: " & $Ex & " (dec), " & Hex($Ex, 4) & " (hex)" & @CRLF)

Func Test2($param1)

EndFunc   ;==>Test2

Gives you

$Er: 57005 (dec), DEAD (hex); $Ex: 48879 (dec), BEEF (hex)
$Er: 57005 (dec), DEAD (hex); $Ex: 48879 (dec), BEEF (hex)
with Autoit 3.3.8.0

@Extended doesn't seem to work (always returns 0) but @error does. It returns @error and @extended as described.

Edited by water

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#11 ·  Posted

"Sets @error to 0xDEAD and @extended to 0xBEEF if the function does not exist or invalid number of parameters."

Dead and beef, really..? :)


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#12 ·  Posted

Very old convention.


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#13 ·  Posted

Check this: Hexspeak


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#14 ·  Posted

Aaaah.

Makes sense now. :)


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#15 ·  Posted

Then make sure you use the right function names inside the array from the beginning. ;)

Yes, that would help, but I would like to have error alerts in my program if it doesn't work.

Do you sometimes read the help file :)

It clearly states:

"Sets @error to 0xDEAD and @extended to 0xBEEF if the function does not exist or invalid number of parameters."

I always read the help file. But I am not using the call function, I am using GuiCtrlSetOnEvent, as mentioned earlier.


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#16 ·  Posted

As far as I am aware of, there's no function that checks to see if a function exists. Even if there were, you'd still have to recurse through your array of function names and check them individually, which kind of defeats the purpose of checking it in the first place because you can do it manually just as easily.


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 XP, and I'm not going to.
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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.

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#17 ·  Posted

Then you'd have to write a function to check to ensure your function to check functions is functioning. I believe that is one of the signs of the Apocalypse :)


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#18 ·  Posted

Recursion level has been exceeded - The earth will cease to exist to prevent noob overflow.

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 XP, and I'm not going to.
Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag Gude
How to ask questions the smart way!

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.

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 editor  -  GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.  -   Latin Square password generator

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#19 ·  Posted

I think the best way for you to go about this is to handle the error if it occurs.

Are you dynamically setting hotkeys via user input, where they enter the name of a function?

If this is the case, then I suggest you test the result of hotkeyset, as that will fail if the function does

not exist.


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#20 ·  Posted

Ok, thanks guys. It's not a requirement, just something I was hoping to get running. Oh well, I will survive :)


[spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][spoiler][center]I would give you a pot of gold, but since I can't be bothered with the ascii, here is a nice picture of a gold coin instead.O[/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/spoiler][/center]

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