onflow/cadence v0.23.0 on GitHub

💥 Breaking Changes

Remove PublicKey.isValid by @robert-e-davidson3 in #1273, #1454
The PublicKey constructor now validates the public key data and aborts the program if it is invalid.
The isValid field was removed.

⭐ Features

Add converter functions to produce path values from strings by @dsainati1 in #1437, #1211
Paths can now be constructed at run-time. The following path constructors were added:
```
fun PublicPath(identifier: string): PublicPath?
fun PrivatePath(identifier: string): PrivatePath?
fun StoragePath(identifier: string): StoragePath?
```
Each of these functions take an identifier and produce a path of the appropriate domain.
For example, to construct a public path from a string:
```
let pathID = "foo"
let path = PublicPath(identifier: pathID) // is /public/foo
```
For more information, see https://docs.onflow.org/cadence/language/accounts/#path-functions
Add RLP decoding utility methods by @ramtinms in #1397, #1456
Cadence now provides RLP decoding functions through the built-in contract RLP.
It provides the following functions for decoding strings and lists:
```
fun decodeString(_ input: [UInt8]): [UInt8]
fun decodeList(_ input: [UInt8]): [[UInt8]]
```
For more information, see https://docs.onflow.org/cadence/language/built-in-functions/#rlp
Add index to for loop by @dsainati1 in #1216, #1452
For-loops may now declare an indexing variable:
```
for index, element in array {
    // ...
}
```
Add BLS-specific crypto functions by @dsainati1 in #1236, #1250, #1430
PublicKey gained a new function to verify a proof-of-possession:
```
fun verifyPoP(_ proof: [UInt8]): Bool
```
Cadence now provides BLS-specific functions through the built-in contract BLS.
It provides the following functions:
```
fun aggregateSignatures(_ signatures: [[UInt8]]): [UInt8]?
fun aggregatePublicKeys(_ publicKeys: [PublicKey]): PublicKey?
```
For more information, see https://docs.onflow.org/cadence/language/crypto/#bls
Adding tracing by @ramtinms in #1179, #1448

🛠 Improvements

Refactor account storage to use atree ordered maps by @turbolent in #1248, #1404 #1391
This storage format change will allow adding a storage querying API in the future.
Expand interpreter tracing for composite, array and dictionary types by @ramtinms in #1450, #1468
Bump onflow/atree to v0.2.0 by @fxamacker in #1470
This updates Cadence to the latest version of atree.
Improve BLS API by @turbolent in #1417
Improve RLP API by @turbolent in #1423

🐞 Bug Fixes

Make error reporting in contract update validation deterministic by @turbolent in #1420, #1428

🙌 New Contributors

Thank you to our new contributor, @robert-e-davidson3!

Full Changelog: v0.21.3...v0.23.0