Populating Arrays With Data; Populating An Array With Arrayset; Populating An Array With Cfloop - MACROMEDIA COLDFUSION 5-DEVELOPING Develop Manual

Populating Arrays with Data

Populating Arrays with Data

Array elements can store any values, including queries, structures, and other arrays.
You can use a number of functions to populate an array with data, including
ArraySet
useful for adding data to an existing array.
In particular you should master the following basic techniques:

Populating an array with ArraySet

You can use the
multidimensional array, with some initial value such as an empty string or 0 (zero).
This can be useful if you need to create an array of a certain size, but do not need to
add data to it right away. One reason to do this is so that you can refer to all the array
indexes. If you refer to an array index that does not contain some value, such as an
empty string, you get an error.
The
ArraySet (arrayname, startrow, endrow, value)
This example initializes the array myarray, indexes 1 to 100, with an empty string.
ArraySet (myarray, 1, 100, "")

Populating an array with cfloop

A common and very efficient method for populating an array is by creating a looping
structure that adds data to an array based on some condition using
The following example uses a
populate a simple 1D array with the names of the months. A second
data in the array to the browser.
<cfset months=arraynew(1)>
<cfloop index="loopcount" from=1 to=12>
</cfloop>
<cfloop index="loopcount" from=1 to=12>
</cfloop>
,
ArrayAppend
Populating an array with
Populating an array with
Populating an array from a query
ArraySet
function has the following form:
ArraySet
<cfset months[loopcount]=MonthAsString(loopcount)>
<cfoutput>
#months[loopcount]#<br>
</cfoutput>
, , and
ArrayInsertAt
ArraySet
cfloop
function to populate a 1D, or one dimension of a
tag and the
cfloop
. These functions are
ArrayPrepend
function to
MonthAsString
121
.
cfloop
outputs
cfloop