String to array - GameCreators Forum

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theUsual

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Joined: 13th Jul 2015

Location: Norway

Posted: 20th Jul 2015 17:45 Edited at: 20th Jul 2015 17:56

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I've used the command GetStringToken() to extract a substring separated by a character. But what do I do if I want to split a word into a character array?

EDIT: Never mind. I found some functions called left(), right() & mid(), i think they'll do the job. Not easy to find though.

Daniel

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theUsual

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Joined: 13th Jul 2015

Location: Norway

Posted: 20th Jul 2015 18:14

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Working code:

+ Code Snippet

function strToArray(word$)
    //Getting word length
    length = len(word$)
	
    //Converting string to character array
    dim ar[length - 1] as string
    for i = 0 to length - 1
        ar[i] = mid(word$, i+1, 1)
    next i

endfunction ar

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okee

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Joined: 1st May 2014

Location: Ireland

Posted: 21st Jul 2015 00:34

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Also another way

+ Code Snippet

function strToArray(word$)

	ar as string[]
    
    for i = 0 to len(word$) - 1
        ar.insert(mid(word$, i+1, 1))
    next i

endfunction ar

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Ancient Lady

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Joined: 17th Mar 2004

Location: Anchorage, Alaska, USA

Posted: 25th Jul 2015 20:48

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A suggestion, this is an efficiency bit to avoid re-evaluting math expressions and such in the for loop.

theUsual's code:

+ Code Snippet

function strToArray(word$)
    //Getting word length
    length = len(word$) - 1
	
    //Converting string to character array
    dim ar[length] as string
    for i = 0 to length
        ar[i] = mid(word$, i+1, 1)
    next i

endfunction ar

okee's code:

+ Code Snippet

function strToArray(word$)

	ar as string[]
        wl = len(word$) - 1
    
    for i = 0 to wl
        ar.insert(mid(word$, i+1, 1))
    next i

endfunction ar

theUsual's code is actually probably the one that would execute faster. It predefines the array size and then just sets values.

okee's code requires a function call (ar.insert) each loop. That call has to resize the array each time in order to add the new element. Each resize operation does a memory allocation for the new size, copies the existing values from the old array, stores the new value and then (hopefully) clears the memory for the old array.

But, it is a bit more 'elegant'.

Cheers,
Ancient Lady

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