If this sounds familiar to you, it’s because this method works very similarly to error-diffusion. Instead of letting adjacent pixels compensate for the error, we’re letting each successive candidate compensate for the combined error of all previous candidates.
// Async — when source or transforms may be asynchronous
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（二）从海关取得的海关进口增值税专用缴款书上列明的增值税税额；
paper card, often the same dimensions as a modern credit card, but with punched