mirror of https://github.com/sbt/sbt.git
22 lines
635 B
Markdown
22 lines
635 B
Markdown
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### Fixes with compatibility implications
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- Deprecate old operators.
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### Deprecate old operators
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The no-longer-documented operators `<<=`, `<+=`, and `<++=` are deprecated,
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and will be removed in sbt 1.0.
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For `<<=`, the suggested migration would be to use either `:=` or `~=` operators.
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The RHS of `<<=` takes an `Initialize[_]` expression, which can be converted to `:=` style
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by wrapping the expression in parenthesis, and calling `.value` at the end.
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For example:
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key := (key.dependsOn(compile in Test)).value
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For `<+=` and `<++=`, use `+= { x.value }` and `++= { x.value }`.
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[@eed3si9n]: https://github.com/eed3si9n
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