Add optional types to func_specializations(f[, tt])

Also add `method_specializations(m)::Vector`

Author: NHDaly

Project.toml

@@ -1,7 +1,7 @@
 name = "LookingGlass"
 uuid = "1fcbbee2-b350-4a01-aad8-439064dba09e"
 authors = ["Nathan Daly"]
-version = "0.3.0"
+version = "0.3.1"
 
 [deps]
 InteractiveUtils = "b77e0a4c-d291-57a0-90e8-8db25a27a240"

src/LookingGlass.jl

@@ -31,7 +31,7 @@ macro quot(e) QuoteNode(e) end
 # ---------------------------------------------------------------------------
 
 """
-    func_specializations(f) -> Dict(MethodInstance => Method)
+    func_specializations(f[, tt]) -> Dict(MethodInstance => Method)
 
 Return all the specializations (MethodInstances) of each method of the given function (or
 callable object), if there are any.
@@ -57,10 +57,17 @@ function func_specializations end
 func_specializations(f) =
     Dict(mi => m
         for m in methods(f).ms
-        for mi in _iterate_method_specializations(m)
+        for mi in _method_specializations(m)
     )
+func_specializations(f, tt) =
+    Dict(mi => m
+        for m in methods(f, tt).ms
+        for mi in _method_specializations(m)
+    )
+
+method_specializations(m) = collect(_method_specializations(m))
 
-function _iterate_method_specializations(m)
+function _method_specializations(m::Method)
     s = m.specializations
     if VERSION > v"1.5-"
         return (s[i] for i in 1:length(s) if isassigned(s, i))