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--- cookbooks:5.5.x:transformations [2021/04/27 07:38] – created miconda
+++ cookbooks:5.5.x:transformations [2021/11/17 16:26] – [{urialias.decode}] miconda
@@ Line 852: / Line 852: @@
 </code>
+===== Value Transformations  =====
+Exported by **pv** module.
+==== {val.json} ====
+If value is $null, return empty string; if value is string, then it is escaped for use as json value (without surrounding quotes.
+<code c>
+$var(x) = '"name" <sip:name@a.com>';
+$(var(x){val.json}) => \"name\" <sip:name@a.com>
+</code>
+==== {val.n0} ====
+Return integer 0 for values that are $null.
+<code c>
+$sht(a=>x) = $null;
+$(sht(a=>x){val.n0}) => 0
+</code>