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Provide example for SpEL's exponential power operator (^)

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This commit is contained in:
Sam Brannen
2024-01-28 15:46:00 +01:00
parent e34ad6bf5f
commit 24d6565cad
3 changed files with 46 additions and 24 deletions
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30
framework-docs/modules/ROOT/pages/core/expressions/language-ref/operators.adoc
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@@ -290,30 +290,33 @@ Java::
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
// Addition
int two = parser.parseExpression("1 + 1").getValue(Integer.class); // 2
int two = parser.parseExpression("1 + 1").getValue(int.class); // 2
// Subtraction
int four = parser.parseExpression("1 - -3").getValue(Integer.class); // 4
int four = parser.parseExpression("1 - -3").getValue(int.class); // 4
double d = parser.parseExpression("1000.00 - 1e4").getValue(Double.class); // -9000
double d = parser.parseExpression("1000.00 - 1e4").getValue(double.class); // -9000
// Multiplication
int six = parser.parseExpression("-2 * -3").getValue(Integer.class); // 6
int six = parser.parseExpression("-2 * -3").getValue(int.class); // 6
double twentyFour = parser.parseExpression("2.0 * 3e0 * 4").getValue(Double.class); // 24.0
double twentyFour = parser.parseExpression("2.0 * 3e0 * 4").getValue(double.class); // 24.0
// Division
int minusTwo = parser.parseExpression("6 / -3").getValue(Integer.class); // -2
int minusTwo = parser.parseExpression("6 / -3").getValue(int.class); // -2
double one = parser.parseExpression("8.0 / 4e0 / 2").getValue(Double.class); // 1.0
double one = parser.parseExpression("8.0 / 4e0 / 2").getValue(double.class); // 1.0
// Modulus
int three = parser.parseExpression("7 % 4").getValue(Integer.class); // 3
int three = parser.parseExpression("7 % 4").getValue(int.class); // 3
int one = parser.parseExpression("8 / 5 % 2").getValue(Integer.class); // 1
int one = parser.parseExpression("8 / 5 % 2").getValue(int.class); // 1
// Exponential power
int maxInt = parser.parseExpression("(2^31) - 1").getValue(int.class); // Integer.MAX_VALUE
// Operator precedence
int minusTwentyOne = parser.parseExpression("1+2-3*8").getValue(Integer.class); // -21
int minusTwentyOne = parser.parseExpression("1+2-3*8").getValue(int.class); // -21
----
Kotlin::
@@ -343,7 +346,12 @@ Kotlin::
val one = parser.parseExpression("8 / 5 % 2").getValue(Int::class.java) // 1
// Operator precedence
// -- Exponential power --
var maxInt = parser.parseExpression("(2^31) - 1").getValue(Int::class.java) // Integer.MAX_VALUE
// -- Operator precedence --
val minusTwentyOne = parser.parseExpression("1+2-3*8").getValue(Int::class.java) // -21
----
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