diff options
Diffstat (limited to 'system/doc/reference_manual/expressions.xml')
| -rw-r--r-- | system/doc/reference_manual/expressions.xml | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/system/doc/reference_manual/expressions.xml b/system/doc/reference_manual/expressions.xml index 668a51d6bc..893398b71b 100644 --- a/system/doc/reference_manual/expressions.xml +++ b/system/doc/reference_manual/expressions.xml @@ -568,10 +568,14 @@ Expr1 <input>op</input> Expr2</pre> <p>The arguments can be of different data types. The following order is defined:</p> <pre> -number < atom < reference < fun < port < pid < tuple < list < bit string</pre> +number < atom < reference < fun < port < pid < tuple < map < nil < list < bit string</pre> <p>Lists are compared element by element. Tuples are ordered by size, two tuples with the same size are compared element by element.</p> + <p>Maps are ordered by size, two maps with the same size are compared by keys in + ascending term order and then by values in key order. + In maps key order integers types are considered less than floats types. + </p> <p>When comparing an integer to a float, the term with the lesser precision is converted into the type of the other term, unless the operator is one of <c>=:=</c> or <c>=/=</c>. A float is more precise than @@ -591,7 +595,11 @@ true 2> <input>1=:=1.0.</input> false 3> <input>1 > a.</input> -false</pre> +false +4> <input>#{c => 3} > #{a => 1, b => 2}.</input> +false +4> <input>#{a => 1, b => 2} == #{a => 1.0, b => 2.0}.</input> +true</pre> </section> <section> |