Release Notes

v0.1.0-beta.12

Date released: 27-08-2019

The following VIPs were implemented for Beta 12:

  • Support for relative imports (VIP #1367)
  • Restricted use of environment variables in private functions (VIP #1199)

Some of the bug and stability fixes:

  • @nonreentrant/@constant logical inconsistency (#1544)
  • Struct passthrough issue (#1551)
  • Private underflow issue (#1470)
  • Constancy check issue (#1480)
  • Prevent use of conflicting method IDs (#1530)
  • Missing arg check for private functions (#1579)
  • Zero padding issue (#1563)
  • vyper.cli rearchitecture of scripts (#1574)
  • AST end offsets and Solidity-compatible compressed sourcemap (#1580)

Special thanks to (@iamdefinitelyahuman) for lots of updates this release!

v0.1.0-beta.11

Date released: 23-07-2019

Beta 11 brings some performance and stability fixes.

  • Using calldata instead of memory parameters. (#1499)
  • Reducing of contract size, for large parameter functions. (#1486)
  • Improvements for Windows users (#1486) (#1488)
  • Array copy optimisation (#1487)
  • Fixing @nonreentrant decorator for return statements (#1532)
  • sha3 builtin function removed (#1328)
  • Disallow conflicting method IDs (#1530)
  • Additional convert() supported types (#1524) (#1500)
  • Equality operator for strings and bytes (#1507)
  • Change in compile_codes interface function (#1504)

Thanks to all the contributors!

v0.1.0-beta.10

Date released: 24-05-2019

  • Lots of linting and refactoring!
  • Bugfix with regards to using arrays as parameters to private functions (#1418). Please check your contracts, and upgrade to latest version, if you do use this.
  • Slight shrinking in init produced bytecode. (#1399)
  • Additional constancy protection in the for .. range expression. (#1397)
  • Improved bug report (#1394)
  • Fix returning of External Contract from functions (#1376)
  • Interface unit fix (#1303)
  • Not Equal (!=) optimisation (#1303) 1386
  • New assert <condition>, UNREACHABLE statement. (#711)

Special thanks to (Charles Cooper), for some excellent contributions this release.

v0.1.0-beta.9

Date released: 12-03-2019

  • Add support for list constants (#1211)
  • Add sha256 function (#1327)
  • Renamed create_with_code_of to create_forwarder_to (#1177)
  • @nonreentrant Decorator (#1204)
  • Add opcodes and opcodes_runtime flags to compiler (#1255)
  • Improved External contract call interfaces (#885)

Prior to v0.1.0-beta.9

Prior to this release, we managed our change log in a different fashion. Here is the old changelog:

  • 2019.04.05: Add stricter checking of unbalanced return statements. (#590)
  • 2019.03.04: create_with_code_of has been renamed to create_forwarder_to. (#1177)
  • 2019.02.14: Assigning a persistent contract address can only be done using the bar_contact = ERC20(<address>) syntax.
  • 2019.02.12: ERC20 interface has to be imported using from vyper.interfaces import ERC20 to use.
  • 2019.01.30: Byte array literals need to be annoted using b”“, strings are represented as “”.
  • 2018.12.12: Disallow use of None, disallow use of del, implemented clear() built-in function.
  • 2018.11.19: Change mapping syntax to use map(). (VIP564)
  • 2018.10.02: Change the convert style to use types instead of string. (VIP1026)
  • 2018.09.24: Add support for custom constants.
  • 2018.08.09: Add support for default parameters.
  • 2018.06.08: Tagged first beta.
  • 2018.05.23: Changed wei_value to be uint256.
  • 2018.04.03: Changed bytes declaration from ‘bytes <= n’ to ‘bytes[n]’.
  • 2018.03.27: Renaming signed256 to int256.
  • 2018.03.22: Add modifiable and static keywords for external contract calls.
  • 2018.03.20: Renaming __log__ to event.
  • 2018.02.22: Renaming num to int128, and num256 to uint256.
  • 2018.02.13: Ban functions with payable and constant decorators.
  • 2018.02.12: Division by num returns decimal type.
  • 2018.02.09: Standardize type conversions.
  • 2018.02.01: Functions cannot have the same name as globals.
  • 2018.01.27: Change getter from get_var to var.
  • 2018.01.11: Change version from 0.0.2 to 0.0.3
  • 2018.01.04: Types need to be specified on assignment (VIP545).
  • 2017.01.02 Change as_wei_value to use quotes for units.
  • 2017.12.25: Change name from Viper to Vyper.
  • 2017.12.22: Add continue for loops
  • 2017.11.29: @internal renamed to @private.
  • 2017.11.15: Functions require either @internal or @public decorators.
  • 2017.07.25: The def foo() -> num(const): ... syntax no longer works; you now need to do def foo() -> num: ... with a @constant decorator on the previous line.
  • 2017.07.25: Functions without a @payable decorator now fail when called with nonzero wei.
  • 2017.07.25: A function can only call functions that are declared above it (that is, A can call B only if B appears earlier in the code than A does). This was introduced