Searching array question

[Guest]

Hi

I'm using the following to search for the index of a nested array within the array 'folders', that contains an object whose id matches a certain value.  The objects being searched are at position 0 of each nested array.

function find(id):int

{ 

    for (var i:int = 0; i < folders.length; i++)

    {       

        if(folders[0].id == id) return i;

    }

}

find("my_value");

...gives me the error: function does not return a value

But if I get rid of the :int...

function find(id)

...it works.

It's definitely an integer returning, as I'm able to use it mathemtaically later.

Why does this happen?

Thanks

[Ned Murphy · Accepted solution]

Since the return of the i value is conditional it is possible the function will fail to return a value.  You should probably rearrange things so that the return happens outside of the loop, where in the case of no value matching you return a -1 or some other value that could not be related to an array index.

[esdebon]

if  a function return a value then the function ever need return a value with condition or not

function find(id):int

{ 

var idx:int=-1;

    for (var i:int = 0; i < folders.length; i++)

    {       

        if(folders[0].id == id) idx=i;

    }

     return idx;

}

[Guest]

Thank you guys - these answers both helped!

[Ned Murphy]

You're welcome