Nasal Loops: Difference between revisions

for(var i=0; i < 3; i = i+1) {

# loop body

# loop body

The differences are that there is no do{}while(); construct, and there is a foreach, which takes a local variable name as its first argument and a vector as its second:

In other words, even though foreach or forindex look like function calls, they work differently.

The hash/vector index expression is an lvalue that can be assigned as well as inspected:

To walk through all elements of a hash, for a foreach loop on the keys of they hash. Then you call pull up the values of the hash using the key.  Example:

myhash= {first: 1000, second: 250, third: 25.2 };

There is also a "forindex", which is like foreach except that it assigns the index of each element, instead of the value, to the loop variable.

var c=0;

while( c<5 )

   print( c+=1 );