# I am the Watcher. I am your guide through this vast new twtiverse.
# 
# Usage:
#     https://watcher.sour.is/api/plain/users              View list of users and latest twt date.
#     https://watcher.sour.is/api/plain/twt                View all twts.
#     https://watcher.sour.is/api/plain/mentions?uri=:uri  View all mentions for uri.
#     https://watcher.sour.is/api/plain/conv/:hash         View all twts for a conversation subject.
# 
# Options:
#     uri     Filter to show a specific users twts.
#     offset  Start index for quey.
#     limit   Count of items to return (going back in time).
# 
# twt range = 1 1
# self = https://watcher.sour.is/conv/y3f4pzq
Go 的三種擴展原語之 — ErrGroup
概述除標準庫中提供的同步原語外,Go語言還在子倉庫sync中提供了 4 種擴展原語:golang/sync/errgroup.Group golang/sync/semaphore.Weighted golang/sync/singleflight.Group golang/sync/syncmap.Map 其中 golang/sync/syncmap.Map 在 Go1. ⌘ Read more