Associative "array" using Assign, IsDeclared and Eval.

[guinness]

Never really had a need for IsDeclared or such-like, but came up with the following idea below. Anyone else have other ideas for usage?

#include <Constants.au3>

#cs
    Idea for appending $ to the variable name in Assign by Yashied.
    Topic: http://www.autoitscript.com/forum/topic/122192-arraysort-and-eliminate-duplicates/#entry849187
#ce

Example()

Func Example()
    AssocAdd('ExampleString', 'This is a sample string')
    AssocAdd('This is a random string with a number', 100)

    MsgBox($MB_SYSTEMMODAL, '', AssocGet('ExampleString'))
    MsgBox($MB_SYSTEMMODAL, '', AssocGet('This is a random string with a number'))
    MsgBox($MB_SYSTEMMODAL, '', AssocGet('String doesn''t exist'))
EndFunc   ;==>Example

Func AssocAdd($sStringName, $vValue)
    Local Const $iGlobalVar = 2 ; Create in Global scope, as Local scope will be destroyed once returned from the function.
    Return Assign($sStringName & '$', $vValue, $iGlobalVar) = 1 ; Assign the string name with the desired value.
EndFunc   ;==>AssocAdd

Func AssocGet($sStringName)
    If IsDeclared($sStringName & '$') = 0 Then Return SetError(1, 0, '') ; If the string name doesn't exist the return a blank string
    Return Eval($sStringName & '$') ; Return the value of the string name.
EndFunc   ;==>AssocGet

[czardas]

I use IsDeclared() when I create a variable in AutoMathEdit script. Much of the language has been rewritten, but it's not ready for release. It's very useful to have IsDeclared() for syntax checking. You can take a look at my to write this, but he code is a bit of a mess. At this stage the simple maths script language has not been fixed, but I have totally turned the error checking routines upsidedown. There are currently about 50 functions, about half of which need documenting. It will be a while before I can get round to this, but I'm nearly there.

Too many life distractions unfortunately. I spent more time on the IDE. It's a very basic IDE.

Edited February 21, 2013 by czardas

[jchd]

The funny and possibly fragile effect is that you can use at least a large subset of Unicode codepoints in variable's name --including whitespaces--, but you're unable to use those variables names directly then!

AssocAdd('This is a random 㱤㲻㳉㳌㱍 string with a number', 100)
MsgBox($MB_SYSTEMMODAL, '', AssocGet('This is a random 㱤㲻㳉㳌㱍 string with a number'))

OTOH is that behavior defined somewhere or is it working by "chance"?

[kylomas]

guinness,

Using assign/eval for checkboxes

#include <GUIConstantsEx.au3>

#AutoIt3Wrapper_Add_Constants=n

local $msg

local $gui010 = guicreate('Checkbox Controls Using Dynamic Variables for the Control ID')

for $1 = 1 to 15
    guictrlcreatelabel('CheckBox #' & stringformat('%02i',$1),10, $1 * 25,90,20)
    assign('checkbox' & $1,GUICtrlCreateCheckbox('',95, $1 * 25,20,15))
Next

guisetstate()

while 1

    $msg = guigetmsg()

    switch $msg
        case $gui_event_close
            Exit
        case eval('checkbox' & 1) to eval('checkbox' & 15)
            for $1 = 1 to 15
                if guictrlread(eval('checkbox' & $1)) = $gui_checked then
                    ConsoleWrite('Checkbox #' & stringformat('%02i',$1) & ' checked' & @LF)
                else
                    ConsoleWrite('Checkbox #' & stringformat('%02i',$1) & ' unchecked' & @LF)
                endif
            next
    EndSwitch

wend

Using eval for filenames and assign/is declared to determine uniqueness

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#include <array.au3>

local $fl_name1 = @scriptdir & '\f11.txt'    ; test file #1
local $fl_name2 = @scriptdir & '\f12.txt'    ; test file #2
local $hlf, $ix = 100000                     ; number of lines for test files

; generate two test files (format = 'random uppercase alpha' and '=' and 'random number between 0 and 9' and '0'
; file #1 does not contain any values starting with 'z' therefore resulting string will only have value starting with 'z'

for $i = 1 to 2
    consolewrite(eval('fl_name' & $i) & @lf)
    $hfl = fileopen(eval('fl_name' & $i),2)
    if $hfl = -1 then msgbox(0,'ERROR','Error opening file = ' & eval('fl_name' & $i))
    for $k = 0 to $ix
        if $i = 1 then
            filewrite($hfl,chr(random(65,89,1)) & '=' & chr(random(48,57,1)) & '0' & @CRLF)
        Else
            filewrite($hfl,chr(random(65,90,1)) & '=' & chr(random(48,57,1)) & '0' & @CRLF)
        endif
    Next
    fileclose($hfl)
    $hfl = 0
next

local $st = timerinit()
local $sDiff = _FindUniqueInFile2(fileread($fl_name1),fileread($fl_name2))
consolewrite('time to run func = ' & round(timerdiff($st)/1000,2) & @lf)

$aDiff = stringsplit($sDiff,'|',2)
_arraydisplay($aDiff,ubound($aDiff))

func _FindUniqueInFile2($str1,$str2)

    local $afile1 = stringsplit($str1,@crlf,3)
    local $afile2 = stringsplit($str2,@crlf,3)
    local $out_str

    for $i = 0 to ubound($afile1) - 1
        assign('s' & $afile1[$i],1)
    Next
    for $i = 0 to ubound($afile2) - 1
        if isdeclared('s' & $afile2[$i]) then
        else
            $out_str &= stringleft($afile2[$i],1) & '=' & stringright($afile2[$i],2) & '|'
        endif
    Next
    $out_str = stringtrimright($out_str,1)
    return $out_str

endfunc

Array search using assign/eval (authored by spiff59)

Local $array[14]=  [1, 3, 1, 0, 1, "0","2","2","3", 0, "1", "", "Arf!", "Arf!"]

For $x = 0 to UBound($array) - 1 ; count 'em up
    $y = "__" & $array[$x]
    If IsString($array[$x]) Then $y &= "_s"
    If IsDeclared($y) Then
        Assign($y, Eval($y) + 1)
        $array[$x] = Chr(0)
    Else
      Assign($y, 1)
    EndIf
Next

For $x = 0 to UBound($array) - 1 ; display results
    If $array[$x] == Chr(0) Then ContinueLoop
    If IsString($array[$x]) Then
        $suffix = "_s"
        $desc = "str"
    Else
        $suffix = ""
        $desc = "num"
    EndIf
    ConsoleWrite("Value: " & $array[$x] & " (" & $desc & ")    first found in element: " & $x & "       occurs: " & Eval("__" & $array[$x] & $suffix) & @CRLF)
Next

Generate unique random numbers (yes, I know, enforcing uniqueness mitigates randomness) using assign / is declared to determine uniqueness

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;
; generate unique random numbers
;

#include <array.au3> ; used for _arraydisplay

; error table - this is just my preferred method for developement, use switch...case on @error if you prefer

local     $errtbl[6]
        $errtbl[1] = ' Minimum value not numeric'
        $errtbl[2] = ' Maximum value not numeric'
        $errtbl[3] = ' Number of unique values to gen not numeric'
        $errtbl[4] = ' Number of unique random values to generate cannot be greater than the range of available numbers'
        $errtbl[5] = ' Random function failed'

;------------------------------------------------------------------------------------
; example scripts
;------------------------------------------------------------------------------------

; generate 1000 floating point random numbers between .1 and .2 - no debugging info
local $rnum = _GenUniqueNumbers(.1,.2,1000,false)
if @error then
    ConsoleWrite('! ERROR = ' & $errtbl[@error] & @LF)
else
    _arraydisplay($rnum)
endif

; generate 10 integers between -5 and 5 - show timings and accept/reject messages
local $rnum = _GenUniqueNumbers(-5,5,11,-1,'all')
if @error then
    ConsoleWrite('! ERROR = ' & $errtbl[@error] & @LF)
else
    _arraydisplay($rnum)
endif

; generate 10 integers between -9 and 0 - generate range error
local $rnum = _GenUniqueNumbers(-9,0,11)
if @error then
    ConsoleWrite('! ERROR = ' & $errtbl[@error] & @LF)
else
    _arraydisplay($rnum)
endif

; generate 1000 integers between 1 and 3000
local $rnum = _GenUniqueNumbers(1,3000,1000)
if @error then
    ConsoleWrite('! ERROR = ' & $errtbl[@error] & @LF)
else
    _arraydisplay($rnum)
endif

; generate 1001 integers between 0 and 1000 - show timing - this example demonstrates worst possible scenario in terms of overhead
local $rnum = _GenUniqueNumbers(0,1000,1001,default,'time')
if @error then
    ConsoleWrite('! ERROR = ' & $errtbl[@error] & @LF)
else
    _arraydisplay($rnum)
endif

; generate 100000 integers between 1 and 100000 - show timing - just fucking around to see how long it takes
local $rnum = _GenUniqueNumbers(1,100000,100000,default,'time')
if @error then
    ConsoleWrite('! ERROR = ' & $errtbl[@error] & @LF)
else
    _arraydisplay($rnum)
endif

;=========================================================================================================================================================
;
; Description:        : Generate unique random numbers
; Parameter(s):        : $min   - minimum random number
;                    : $max   - maximum random number
;                    : $num   - #of unique values to generate
;                    : $int   - true  = generate integers
;                               false = generate floating point numbers
;                               if this is true then $num cannot be greater than $max-$min (cannot generate more unique values than all possible candidates)
;                    : $debug - 'time' = issue timings to console
;                               'all'  = issue timings and number accept/reject messages to console
; Requirement:        : none
; Return Value(s):    : @error = 1 - minimum value not numeric
;                               2 - maximum value not numeric
;                               3 - number of unique values to gen not numeric
;                               4 - number to generate is greater than the range of available numbers (only set if $int = true)
; User CallTip:        : none
; Author(s):        : kylomas
; Note(s):            :
;
;===========================================================================================================================================================
func _GenUniqueNumbers($min, $max, $num, $int = true, $debug = '')

    if $debug = 'time' or $debug = 'all' then local $st = timerinit()

    if not IsNumber($min)              then return seterror(1)
    if not IsNumber($max)              then return seterror(2)
    if not IsNumber($num)           then return seterror(3)

    if $int= -1 or $int = default then $int = true

    if $int and (($max-$min)+1 < $num)    then return seterror(4)

    local $a1[$num], $tnum

    for $1 = 0 to $num - 1
        $tnum = random($min, $max, $int)
        if $tnum = 0 and @error = 1 then seterror(5)
        while IsDeclared('s' & $tnum)
            if $debug = 'all' then ConsoleWrite('!> rejecting ' & $tnum & @LF)
            $tnum = random($min, $max, $int)
            if $tnum = 0 and @error = 1 then seterror(5)
        wend
        if $debug = 'all' then ConsoleWrite('-> accepting ' & $tnum & @LF)
        assign('s' & $tnum,'')
        $a1[$1] = $tnum
    Next

    if $debug = 'time' or $debug = 'all' then consolewrite('+> Time to gen ' & $num & ' numbers = ' & round(timerdiff($st)/1000,4) & @lf)

    return $a1

endfunc

And of course no list is complete without a card shuffling routine. Again, is declared / assign combo is used to enforce singularity.

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#include <array.au3>
#include <string.au3>

local $old_deck, $new_deck = shuffle(), $cnt=0, $tcnt=0

for $1 = 1 to 1000
    local $st = timerinit()
    $new_deck = shuffle()
    for $2 = 0 to ubound($old_deck) - 1
        if $old_deck[$2] = $new_deck[$2] then $cnt += 1
    next
    _DBG_ConOut('Time to shuffle',round(timerdiff($st)/1000,4),50,'.','red')
    _DBG_ConOut('  Cards not moved',$cnt,50,'.','red')
    $old_deck = $new_deck
    $tcnt += $cnt
    $cnt = 0
next

_DBG_ConOut('Total Cards not moved in ' & $1-1 & ' shuffles',$tcnt,50,'.','red')

func shuffle()

    local $deck[52],$card
    $card = random(1,52,1)

    for $1 = 0 to 51

        while isdeclared('s' & $card)
                $card = random(1,52,1)
        WEnd
        assign('s' & $card,'')
        $deck[$1] = $card

    Next

    return $deck

endfunc

; #FUNCTION# ===========================================================================================================
; Name ................:    _DBG_ConOut
; Description .........:    output formatted output to the console
; Syntax ..............:    _DBG_ConOut($String1, $string2='', $Col1_Width=50, $Fill_Char=' ', $Color='Black)
; Parameters ..........:    $String1         - 1ST string to appear in console output
;                             $String2         - 2ND string to appear in console output
;                           $Col1_Width        - 1ST string column width.  This will be left filled with
;                                              $Fill_Char if > than $String1 length
;                            $Fill_Char        - one, or more chars to use to left pad between $String1 and $Sting2
;                            $Color            - Console output color.  Valid colors are black, red, blue, green and yellow
;
; Example..............;    con_out('Time to run',round(timerdiff($st)/1000,3),20,'.','red') output to the console
;                            Time to run..........0.003 (in red)
;
; ======================================================================================================================

func _DBG_ConOut($String1,$String2='',$Col1_Width=50,$Fill_Char=' ',$Color='Black')
    switch stringlower($Color)
        case 'black'
            $Color = ' '
        case 'blue'
            $Color = '>'
        case 'yellow'
            $Color = '-'
        case 'red'
            $Color = '!'
        case 'green'
            $Color = '+'
        case Else
            $Color = ' '
    EndSwitch
    consolewrite($Color & ' ' & $String1 & _stringrepeat($Fill_Char,$Col1_Width - stringlen($String1)) & $String2 & @lf)
endfunc

kylomas

edit: corrected title in checkbox example

Edited February 21, 2013 by kylomas

[guinness]

Thanks kylomas, certainly some interesting ideas there.

[kylomas]

guinness, et al,

The idea of an "associative" array surfaces every once and a while. Why not just use the dictionary object? Just curious.

kylomas

[guinness]

I do, but was just interested in looking at alternative methods.