use serde_json::{json, Value};
use super::{logic, Data, Expression};
pub fn compute(args: &[Expression], data: &Data) -> Value {
let a = args
.get(0)
.map(|arg| arg.compute(data))
.unwrap_or(json!(null));
let b = args
.get(1)
.map(|arg| arg.compute(data))
.unwrap_or(json!(null));
Value::Bool(!logic::is_strict_equal(&a, &b))
}