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dim
Format: dim( n1, n2, ... )
Arguments: (int) n1, n2 ,... Number of
elements in each dimension
Returns: [int] Array of zeros with the dimensions
specified by n1, n2, ...
Description: The dim primitive is used to
initialize an array of variables that will later be assigned
values using the Assign
operator. If only one argument is supplied, e.g., dim( n1
), a list of n1 zeros is created. If two arguments
are supplied, e.g., dim( n1, n2
), a matrix of n1 rows and n2 columns is created.
This pattern is continued for arrays of any number of dimensions.
Examples: var x=dim(10); = declares
x to be a list of 10 values
x[2]=12 = assigns 12 to the
3rd element in the array x
x=dim(10,5) = declares x to be
a 10 by 5 array
x[1][2]=9 = assigns 9 to the
3rd element of the 2nd list in the array x
The following procedure creates a list of n^2 for n = 0
to 9.
Proc:={
var x=dim(10);
for(var n=0; n<10; n++)
x[n]=n*n;
return x;
}
See Also: Assign, makelist
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