ArrayFill question

[Gordon Gekko]

Hi guys,

This code

#define N_ARRAY 5
   int myArray[];

   ArrayResize(myArray,N_ARRAY);

   Print("Before: ",myArray[0],"/",myArray[N_ARRAY-1]);
   ArrayFill(myArray,0,WHOLE_ARRAY,7);
   Print("After: ",myArray[0],"/",myArray[N_ARRAY-1]);

 gives 0/0 in "After" line.

But this code

#define N_ARRAY 5
   int myArray[];

   ArrayResize(myArray,N_ARRAY);

   Print("Before: ",myArray[0],"/",myArray[N_ARRAY-1]);
   ArrayFill(myArray,0,ArraySize(myArray),7);
   Print("After: ",myArray[0],"/",myArray[N_ARRAY-1]);

gives 7/7.

"WHOLE_ARRAY" doesn't work.

ArraySize(myArray) does work.

Why?

Thanks

[William Roeder]

ggekko: Why?

WHOLE_ARRAY Used with array functions. Indicates that all array elements will be processed. Means the number of items remaining until the end of the array, i.e., the entire array will be processed -- Other constants - Named Constants - Standard Constants, Enumerations and Structures - MQL4 Reference This is a user's forum not Metaquotes. Can someone please advise where I send a Request for Support to Metaquotes. - MQL4 forum Get in touch with developers using Service Desk! - MQL5 forum Report it to the service desk. 'MQL5.community - User Memo' - an article about the algorithmic/automated trading in MetaTrader Report it to the Service Desk, not us users.

[Fernando Carreiro]

According to the documentation the, ArrayFill() function does not mention that you can use a count of 0 or WHOLE_ARRAY with that function. In other words, you have assumed it does, but it actually needs an explicit count. Only some array functions allow the use of a 0 count or WHOLE_ARRAY to mean the entire array, but ArrayFill() is not one of them.