io/fs.FileMode.IsDir
standard libraryThe 2821st most-called standard-library method by production calls. Called 297 times across 133 modules; 218 of those run outside tests and generated code.
0% in production calls vs 2026-W39 (217 → 218)
- prod calls
- 218
- non-test, non-generated
- all calls
- 297
- total callsites
- modules
- 133
- distinct callers
- in loop
- 20%
- of prod calls
- in tests
- 27%
- 79 calls
- resolved
- 100%
- 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 →
- Concrete method100%A method on a value whose type is known exactly.
who calls this
Notable callers
Production calls into FileMode.IsDir from notable Go projects. Open one on the map to see what else it hammers.
- Kubernetes 15 7%
- containerd 11 5%
- Docker 9 4%
- Go (golang.org/x) 6 3%
- CockroachDB 3 1%
where it's called
Callsites in the wild
12 representative callsites of 297, prioritizing in-loop and non-test usage. We link to source, never display it.
-
cilium/cilium @v1.20.2
in loop - in loop
-
go-gitea/gitea @v1.27.3
in loop -
gitea.dev @v1.27.3
modules/util/path.go:141
in loop - in loop
- in loop
-
IBM-Cloud/bluemix-go @v0.0.0-20260916083538-6e91b9f8f36f
in loop - in loop
-
google/gvisor @v0.0.0-20260927234935-6485c3fbdfe2
in loop - in loop
-
jetify-com/devbox @v0.0.0-20260925174812-ed729044dcda
in loop -
k3s-io/k3s @v1.0.1
in loop
top callers
The modules that reach for it
The modules that call FileMode.IsDir most in this snapshot.
- github.com/sourcegraph/sourcegraph-public-snapshot155%
- github.com/tetratelabs/wazero114%
- github.com/restic/restic103%
- github.com/containerd/continuity83%
- github.com/kopia/kopia83%
siblings
More from io/fs
The other most-called members in this package. See all →