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immutable json expressions, structural equality and lenses in pony
let data = JObj
+ ("key", I64(1))
+ ("value", JObj
+ ("name", "jay")
+ ("version", "1.0.0")
+ ("release", true)
+ ("null", None)
+ ("dependencies", JArr + "json")
){
"key": 1,
"value": {
"name": "jay",
"version": "1.0.0",
"release": true,
"null": null,
"dependencies": ["json"]
}
}let array = JArr
+ "string"
+ I64(123)
+ F64(22.7)
+ true
+ None
+ (JObj + ("test", "value"))["string", 123, 22.7, true, null, {"test": "value"}]let lens = JLens("value")("version") / JLens(USize(2))
assert_eq(lens.json(data), "1.0.0")
assert_eq(lens.json(array), F64(22.7))