tact-lang/tact v1.6.5 on GitHub

Language features

Optimized Context().sender to use sender() function for better gas efficiency: PR #2427
[fix] Ternary operator with struct and null: PR #2432
[fix] Show an error message for assembly functions with the get attribute: PR #2484
[fix] The parser does not throw an internal compiler error if the error is reported after the end of the file: PR #2485
[fix] Always show an error when calling the dump() function with an argument of the unsupported StringBuilder type: PR #2491
[fix] The grammar now disallows the augmented assignment operators with whitespace between the operator and the equals sign: PR #2492
[fix] Generated code now short-circuits &&= and ||= operators: PR #2494
[fix] Get methods that return optional contract state now work correctly: PR #2512
[fix] Get methods that return contract state for empty contracts now work correctly: PR #2517
[fix] Skip checking if the slice has been parsed completely when parsing a message (Message.fromSlice()) with the last field of the type Slice as remaining: PR #2524
[fix] The wildcard symbol (_) cannot be used as an identifier in any context, including struct/message fields or contract names: PR #2519

Deprecated the SendPayGasSeparately constant in favor of SendPayFwdFeesSeparately: PR #2483
Time-related functions are now located in the std/internal/time.tact file: PR #2507
[fix] The Stoppable trait now uses throwUnless with exit code 133 instead of require with "Contract stopped" message: PR #2503

internalExternalReceiversOutsideMethodsMap has been reworked to ensure compatibility with explorers: PR #2398

Fixed description of the dump() function, which does not support values of StringBuilder type: PR #2463
Explicitly stated that structs cannot be empty, while message structs can: PR #2464
Fixed description of the contractAddressExt() function, which currently does not resolve constant values at compile-time and allows specifying arbitrary chain IDs: PR #2497
Fixed description of getOriginalFwdFee() and Context.readForwardFee() functions, where the latter calls the former at the end of its execution: PR #2521