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Update 0_beacon-chain.md 

* Avoid abbreviations
* Use `branch` as a more suggestive variable name than `ret`
* Cleanup spacing after comma
* Avoid having two index variables (`index` and `idx`)—Does this break anything?
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Justin 2019-01-11 11:52:04 +00:00 committed by GitHub
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specs/core/0_beacon-chain.md
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@ -695,12 +695,12 @@ def get_deposit_root() -> bytes32:
@public @public
@constant @constant
def get_merkle_branch(index: uint256) -> bytes32[32]: # size is DEPOSIT_CONTRACT_TREE_DEPTH (symbolic const not supported) def get_merkle_branch(index: uint256) -> bytes32[32]: # size is DEPOSIT_CONTRACT_TREE_DEPTH (symbolic const not supported)
idx: uint256 = index + TWO_TO_POWER_OF_TREE_DEPTH index = index + TWO_TO_POWER_OF_TREE_DEPTH
ret: bytes32[32] # size is DEPOSIT_CONTRACT_TREE_DEPTH branch: bytes32[32] # size is DEPOSIT_CONTRACT_TREE_DEPTH
for i in range(DEPOSIT_CONTRACT_TREE_DEPTH): for i in range(DEPOSIT_CONTRACT_TREE_DEPTH):
ret[i] = self.deposit_tree[bitwise_xor(idx,1)] branch[i] = self.deposit_tree[bitwise_xor(index, 1)]
idx /= 2 index /= 2
return ret return branch
``` ```
## Beacon chain processing ## Beacon chain processing