The biggest compromise appears to be in memory, though. While Apple doesn't include it in the main body of its press release, but when you go to preorder the device, it appears to only come with 8 GB of unified memory, without an option to upgrade. You do get the option of either 256 GB or 512 GB of storage, which only costs $100 more.
The type true_typ if bool_typ else false_typ is a conditional
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cumulative weight += weights[i]