jsonata-rs 0.3.4

An (incomplete) implementation of JSONata in Rust
Documentation 
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{
    "expr": "(  $firstn := $substring(?, 0, ?);  $first5 := $firstn(?, 5);  $first5(\"Hello World\"))",
    "dataset": "dataset5",
    "bindings": {},
    "result": "Hello"
}