Nim/changelog.md

v2.x.x - yyyy-mm-dd

Changes affecting backward compatibility

• -d:nimPreviewFloatRoundtrip becomes the default. system.addFloat and system.$ now can produce string representations of floating point numbers that are minimal in size and possess round-trip and correct rounding guarantees (via the Dragonbox algorithm). Use -d:nimLegacySprintf to emulate old behaviors.

• The default parameter of tables.getOrDefault has been renamed to def to avoid conflicts with system.default, so named argument usage for this parameter like getOrDefault(..., default = ...) will have to be changed.

Standard library additions and changes

• std/math The ^ symbol now supports floating-point as exponent in addition to the Natural type.

Language changes

Compiler changes

Tool changes