can't infer the type of instance variable '@expires_in' of Cache::Store(String, String) #38
Description
reproduce:
require "./src/cache"
CACHE_STORE = if true
Cache::MemoryStore(String, String)
else
Cache::NullStore(String, String)
end
MARKDOWN_CACHE = CACHE_STORE.new(expires_in: 1.minutes)
MARKDOWN_CACHE.fetch("foo") { "foo" }Get error like following:
Showing last frame. Use --error-trace for full trace.
In src/cache/store.cr:35:40
35 | def fetch(key : K, *, expires_in = @expires_in, &)
^----------
Error: can't infer the type of instance variable '@expires_in' of Cache::Store(String, String)
Could you add a type annotation like this
struct Cache::Store(String, String)
@expires_in : Type
end
replacing `Type` with the expected type of `@expires_in`?
Thanks