E0063

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E0063#

Warning name: syntax_lint

Syntax lint warning.

This warning category is used for valid code patterns that the compiler accepts but discourages. For example, wrapping a supplied optional argument in Some is unnecessary:

///|
pub fn consume(value? : Int) -> Unit {
  ignore(value)
}

///|
pub fn demo() -> Unit {
  consume(value?=Some(42))
}

Suggestion#

Pass the value directly when supplying the optional argument:

///|
pub fn consume(value? : Int) -> Unit {
  ignore(value)
}

///|
pub fn demo() -> Unit {
  consume(value=42)
}

Other syntax lint diagnostics may report different anti-patterns and provide a suggestion specific to the code being checked.

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