Manipulation

0|fill:0:10     // Returns [0,0,0,0,0,0,0,0,0,0]
"x"|fill:2:5    // Returns [null,null,"x","x","x","x","x"]
true|fill:1:3   // Returns [null,true,true,true]

"value"|fill_keys:["a","b","c"]    // Returns {"a":"value","b":"value","c":"value"}
0|fill_keys:["x","y"]                // Returns {"x":0,"y":0}

""|first_notempty:"default"          // Returns "default"
"value"|first_notempty:"default"     // Returns "value"

null|first_notnull:"default"         // Returns "default"
"value"|first_notnull:"default"      // Returns "value"

{"name":"John"}|get:"name":"unknown"     // Returns "John"
{}|get:"name":"unknown"                  // Returns "unknown"

{"name":"John"}|has:"name"     // Returns true
{"name":"John"}|has:"age"      // Returns false

{}|set:"name":"John"                     // Returns {"name":"John"}
{"age":30}|set:"name":"John"            // Returns {"age":30,"name":"John"}

{}|set_conditional:"status":"active":true      // Returns {"status":"active"}
{}|set_conditional:"status":"active":false     // Returns {}

{}|set_ifnotempty:"name":""           // Returns {}
{}|set_ifnotempty:"name":"John"       // Returns {"name":"John"}

{}|set_ifnotnull:"name":null          // Returns {}
{}|set_ifnotnull:"name":"John"        // Returns {"name":"John"}

2|transform:$$+3                        // Returns 5
[{value:2},{value:5}]|transform:$$.value*2  // Returns [4,10]

{"name":"John","age":30}|unset:"age"   // Returns {"name":"John"}
{"name":"John"}|unset:"address"        // Returns {"name":"John"}