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Clarify semantics of SpEL's between operator

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See gh-32140
This commit is contained in:
Sam Brannen
2024-02-01 14:49:12 +01:00
parent d4401cc69a
commit a82108ec73
2 changed files with 11 additions and 13 deletions
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12
framework-docs/modules/ROOT/pages/core/expressions/language-ref/operators.adoc
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@@ -162,15 +162,13 @@ Kotlin::
----
======
[NOTE]
[CAUTION]
====
The left operand to the `between` operator must be a single value, and the right operand
must be a 2-element list which defines the range.
The syntax for the `between` operator is `<input> between {<range_begin>, <range_end>}`,
which is effectively a shortcut for `<input> >= <range_begin> && <input> \<= <range_end>}`.
The `between` operator returns `true` if the left operand is _between_ the two elements
in the range, inclusive (using a comparison algorithm based on `java.lang.Comparable`).
In addition, the first element in the range must be less than or equal to the second
element in the range.
Consequently, `1 between {1, 5}` evaluates to `true`, while `1 between {5, 1}` evaluates
to `false`.
====
CAUTION: Be careful with primitive types, as they are immediately boxed up to their