Hi Eduard and all,

I am trying to pass an integer by reference, but I can't get it right. Could any one help me on this? What I tried works fine for arrays, but not for integers only.

in chuck, references *cannot* be made to primitive types (int, float, dur, time), only to objects. in function calling, primitives are always passed by value, and non-primitives are always passed by reference (like in Java), regardless of the usage of @. However, the compiler should have caught the fact that a function has been declared to take an 'int @' as argument - this is a bug, which has been fixed now and will be included in 1.2.0.4. Additionally, arrays are always considered objects, including arrays of primitives. as for achieving pass-by-reference for primitive types, one way is to wrap them in an object and pass the object: //---------------------------------------- // slightly modified // (@ have been removed from func args) //----------------------------------------- // define class to wrap int class TheInt { int value; } // instantiate it TheInt ti; // set any initial values 5 => ti.value; // call modify value ModifyValue( ti, 10 ); // check again <<< ti.value >>>; fun void PrintArray( int array[] ) { for( 0 => int i ; i < 10; i++ ) <<<"a[",i,"] = ", array[i]>>>; } fun int IsInArray(int array[], int num, int length ) { if( length > array.cap() ) array.cap() => length; if( !length ) return 0; // array is still empty for( 0 => int i; i < length; i++ ) { if( num == array[i] ) { <<>>; return 1; // num found in array } } <<< num, " not found in array" >>>; return 0; // not found } fun void ModifyValue( TheInt val, int newValue ) { <<< "val is: " , val.value >>>; newValue => val.value; <<< "val is: " , val.value >>>; } fun void ModifyArray( int array[] ) { for(0=>int i; i < array.cap(); i++) array[i]*5 => array[i]; }