# 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/77lgz7q
Go struct tag 能否設置默認值?**
struct tag 默認值 1. 需求背景有時候 gopher 在 marshal 一個 struct 到 json 的時候,想要 struct 某些屬性在沒有值的情況下有默認值,但是按照現在 marshar 的作用下不會給 struct 的屬性賦默認值,所以爲了解決這個特殊需求,我們應該按照以下方案來解決。2. 解決方案 利用反射,因爲通過反射,我們可以拿到 tag 屬性,進而對默認字段做 ⌘ Read more