Create a string from an array without looping

[joefiesta]

Stringsplit nicely creates an array (pseudo or real) from a string.

Is there a way to create a string from an array WITHOUT USING A LOOP? I believe the array would have to be an object (not a "pseudo" array).

Put more simply: Does Stringsplit have a converse?

I'm using Stringsplit to create an array from an .INI file entry. Then use the array's values in my script. And then store any changes back to the .INI file (not that the .INI part has anything to do with this question).

[Guest]

No, there is no StrJoin - but its very easy to write one - wishlist + discussion https://autohotkey.com/boards/viewtopic.php?t=25918

[BoBo]

Is there a way to create a string from an array WITHOUT USING A LOOP? I believe the array would have to be an object (not a "pseudo" array).

Well, if the number of elements in your array is static/known, no big deal ...

Code: Select all

array := StrSplit("bla blu blo bli", " ")
MsgBox % string := array[3] "`n" array[1] "`n" array[2] "`n" array[4]

Loop-phobics favourite (but annoying) thing!

Beware. Loops ahead!

Spoiler

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#SingleInstance, Force

F10::
	var := ""
	Loop, 4																; let's ignore that there's a loop involved!
	   var .= If (A_Index = 1) ? Chr(A_Index+96) : "|" Chr(A_Index+96)  ; creating a string
	MsgBox % var                                                        ; showing the created string
	array := StrSplit(var,"|")											; 'array'ing the created string
	Return

F11::MsgBox % StrJoin("array",array.Length(),"*")						; call to show all elements of the "array"-array

StrJoin(oName,oLen,delm) {												; Pah. Using loops in functions is all fake news! TRUST ME!!
   Loop % oLen															; MLGA (making loops great again)
      string .= If (A_Index = 1) ? %oName%[A_Index] : delm . %oName%[A_Index] ; joining the arrays elements 
   Return string														; returning ...
   }

[joefiesta]

@Bobo oooh, is that ugly.... But, thanks, and, no my array varies. I think that's the point. I'm no loopaphobe... just thought it would be much more than it works out to be.

it's so easy, I don't even think it would be worth having a command. I just learned FOR, so the loop is not ugly and probably as fast as any builtin command.

Code: Select all

  for kk,value in myarray                   ; loop, getting each KKth item, storing in VALUE
         mystring .= "," . value
 mystring := substr(mystring,2)
       

[MaxAstro]

For loops are easily my favorite loop since I found out about them. Another dead simple for loop that is really handy when dealing with arrays:

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for index, value in haystack
	if (value = needle)
		return index
return 0

Spent a while wondering why AutoStar has no native Object.Contains() function until I realized writing one is literally three lines of code.