User Guide

Using CFScript statements 135
myStruct=StructNew();
myStruct.productName="kumquat";
mystruct.quality="fine";
myStruct.quantity=25;
for (keyName in myStruct) {
WriteOutput("myStruct." & Keyname & " has the value: " &
myStruct[keyName] &"<br>");
}
Note: Unlike the
cfloop tag, CFScript for-in loops do not provide built-in support for looping over
queries and lists.
Using continue and break statements
The continue and break statements enable you to control the processing inside loops:
• The continue statement tells ColdFusion to skip to the beginning of the next loop iteration.
• The break statement exits the current loop or case statement.
Using continue
The continue statement ends the current loop iteration, skips any code following it in the loop,
and jumps to the beginning of the next loop iteration. For example, the following code loops
through an array and display’s each value that is not an empty string:
for ( loop=1; loop LE 10; loop = loop+1) {
if(a[loop] EQ "") continue;
WriteOutput(loop);
}
(To test this code snippet, you must first create an array, a, with 10 or more elements, some of
which are not empty strings.)
In general, the
continue statement is particularly useful if you loop over arrays or structures and
you want to skip processing for array elements or structure members with specific values, such as
the empty string.
Using break
The break statement exits the current loop or case statement. Processing continues at the next
CFScript statement. You end
case statement processing blocks with a break statement. You can
also use a test case with a
break statement to prevent infinite loops, as shown in the following
example. This script loops through an array and prints out the array indexes that contain the
value key. It uses a conditional test and a
break statement to make sure that the loop ends when
at the end of the array.
strings=ArrayNew(1);
ArraySet(strings, 1, 10, "lock");
strings[5]="key";
strings[9]="key";
indx=0;
for( ; ; ) {
indx=indx+1;
if(Find("key",strings[indx],1)) {
WriteOutput("Found a key at " & indx & ".<br>");