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Apex EvalEx - Apex Expression Evaluator

Description 

EvalEx is an expression evaluator for Apex, that evaluates simple mathematical and boolean expressions.

After reading this article you will be able to explain the supported

  • Operators
  • Functions
  • Constants

Supported Operators

Mathematical Operators

Operator Description
+ Additive operator
- Subtraction operator
* Multiplication operator
/ Division operator
% Remainder operator (Modulo)
^ Power operator

Boolean Operators

Operator Description
= Equals
== Equals
!= Not equals
<> Not equals
< Less than
<= Less than or equal to
> Greater than
>= Greater than or equal to
&& Boolean and
|| Boolean or

 

Supported Functions

Function* Description
NOT(expression) Boolean negation, 1 (means true) if the expression is not zero
IF(condition,value_if_true,value_if_false) Returns one value if the condition evaluates to true or the other if it evaluates to false
RANDOM() Produces a random number between 0 and 1
MIN(e1,e2...) Returns the smallest of the given expressions
MAX(e1,e2...) Returns the biggest of the given expressions
ABS(expression) Returns the absolute (non-negative) value of the expression
ROUND(expression,precision) Rounds a value to a certain number of digits, uses the current rounding mode
FLOOR(expression) Rounds the value down to the nearest integer
CEILING(expression) Rounds the value up to the nearest integer
LOG(expression) Returns the natural logarithm (base e) of an expression
LOG10(expression) Returns the common logarithm (base 10) of an expression
SQRT(expression) Returns the square root of an expression
SIN(expression) Returns the trigonometric sine of an angle (in degrees)
COS(expression) Returns the trigonometric cosine of an angle (in degrees)
TAN(expression) Returns the trigonometric tangens of an angle (in degrees)
ASIN(expression) Returns the angle of asin (in degrees)
ACOS(expression) Returns the angle of acos (in degrees)
ATAN(expression) Returns the angle of atan (in degrees)
SINH(expression) Returns the hyperbolic sine of a value
COSH(expression) Returns the hyperbolic cosine of a value
TANH(expression) Returns the hyperbolic tangens of a value
RAD(expression) Converts an angle measured in degrees to an approximately equivalent angle measured in radians
DEG(expression) Converts an angle measured in radians to an approximately equivalent angle measured in degrees

 

Note: Function names are case insensitive

Supported Constants

Constant Description
PI The value of PI, exact to 100 digits
TRUE The value one
FALSE The value zero

 

Attention Users,

To learn more about Apex EvalEx click here