Improve parsing performance and get_operations

examples/Project.toml

@@ -3,3 +3,4 @@ BenchmarkTools = "6e4b80f9-dd63-53aa-95a3-0cdb28fa8baf"
 MetagraphOptimization = "3e869610-d48d-4942-ba70-c1b702a33ca4"
 Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
 ProfileView = "c46f51b8-102a-5cf2-8d2c-8597cb0e0da7"
+Revise = "295af30f-e4ad-537b-8983-00126c2a3abe"

examples/import_bench.jl

@@ -16,12 +16,15 @@ function bench_txt(filepath::String, bench::Bool = true)
     println(name, ":")
     g = parse_abc(filepath)
     print(g)
-    println("  Graph size in memory: ", bytes_to_human_readable(Base.summarysize(g)))
+    #println("  Graph size in memory: ", bytes_to_human_readable(Base.summarysize(g)))
 
     if (bench)
         @btime parse_abc($filepath)
-        println()
     end
+
+    println("  Get Operations: ")
+    @time get_operations(g)
+    println()
 end
 
 function import_bench()