Searching array question

Question

HiI'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 valueBut 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 Answer

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 · Answer

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;

}

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