reflect.Type.NumOut
standard libraryThe 1996th most-called standard-library method by production calls. Called 349 times across 89 modules; 318 of those run outside tests and generated code.
No change in production calls since 2026-W39.
- prod calls
- 318
- non-test, non-generated
- all calls
- 349
- total callsites
- modules
- 89
- distinct callers
- in loop
- 14%
- of prod calls
- in tests
- 9%
- 31 calls
- resolved
- 0%
- to a known target
resolution mix
How each call resolves
How each call was attributed. Only resolved kinds, where the target function is known, count toward the ranking. Interface dispatch and unresolved receivers are reported separately and never guessed. Read the taxonomy →
- Interface method100%Called through an interface. The runtime target may differ.
who calls this
Notable callers
Production calls into Type.NumOut from notable Go projects. Open one on the map to see what else it hammers.
- Uber Go 46 14%
- Kubernetes 30 9%
- Hugo 22 7%
- Kyverno 4 1%
- Cilium 2 <1%
where it's called
Callsites in the wild
12 representative callsites of 349, prioritizing in-loop and non-test usage. We link to source, never display it.
-
entgo.io/ent @v0.14.6
schema/field/type.go:232
in loop -
AdaLogics/go-fuzz-headers @v0.0.0-20240806141605-e8a1dd7889d6
in loop -
ent/ent @v0.14.6
in loop -
expr-lang/expr @v1.17.8
in loop - in loop
-
google/gofuzz @v1.2.0
in loop -
google/gvisor @v0.0.0-20260927234935-6485c3fbdfe2
in loop -
jinzhu/copier @v0.4.0
in loop - in loop
-
onsi/ginkgo/v2 @v2.33.0
in loop -
revel/revel @v1.1.0
in loop -
stretchr/testify @v1.12.1
in loop
top callers
The modules that reach for it
The modules that call Type.NumOut most in this snapshot.
- github.com/gohugoio/hugo226%
- go.uber.org/yarpc195%
- github.com/godbus/dbus/v5175%
- go.uber.org/cadence154%
- github.com/kubernetes/kubernetes144%
siblings
More from reflect
The other most-called members in this package. See all →