batch-impl 0.5.5

A proc-macro library for batch generating trait impls with a powerful DSL
Documentation 
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error: batch-impl: 指令参数中逗号位置不合法（不允许前导/尾随/连续逗号）
 --> tests/ui/fill_bad_comma.rs:9:1
  |
9 | #[batch_impl(usize #fill(m,,n){0})]
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: this error originates in the attribute macro `batch_impl` (in Nightly builds, run with -Z macro-backtrace for more info)