ColdFusion dynamic evaluation functions
The following table describes the functions
that perform dynamic evaluation and are useful in evaluating dynamic
expressions:
Function
|
Purpose
|
|---|
DE
|
Escapes any double-quotation marks in the
argument and wraps the result in double-quotation marks. The DE function
is particularly useful with the IIF function, to
prevent the function from evaluating a string to be output.
For
an example of using the DE function with the IIF function,
see Using the IIF function.
|
Evaluate
|
Takes one or more string expressions and
dynamically evaluates their contents as expressions from left to right.
(The results of an evaluation to the left can have meaning in an
expression to the right.) Returns the result of evaluating the rightmost
argument.
For more information on this function see About the Evaluate function.
|
IIf
|
Evaluates a Boolean condition expression.
Depending on whether this expression is True or False, dynamically
evaluates one of two string expressions and returns the result of
the evaluation. The IIF function is convenient
for incorporating a cfif tag in line in HTML.
For
an example of using this function, see Using the IIF function.
|
PrecisionEvaluate
|
Operates identically to the Evaluate function,
except that it can calculate arbitrary precision decimal arithmetic.
If one or more operands in an arithmetic expression are decimal
numbers, such as 12947834.986532, and are too long to be represented
exactly by a ColdFusion numeric data type, the function uses arbitrary-precision
arithmetic to calculate the result, and return the result as an
arbitrarily long string of numbers. For more information about this
function, see PrecisionEvaluate in
the CFML Reference.
|
SetVariable
|
Sets a variable identified by the first
argument to the value specified by the second argument. This function is
no longer required in well-formed ColdFusion pages; see SetVariable function considerations.
|
