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callcount

regexp.Regexp.ReplaceAllString

standard library

The 401st most-called standard-library method by production calls. Called 2,526 times across 450 modules; 2,128 of those run outside tests and generated code.

0% in production calls vs 2026-W37 (2,124 → 2,128)

All of regexp → Docs on pkg.go.dev ↗

prod calls
2,128
non-test, non-generated
all calls
2,526
total callsites
modules
450
distinct callers
in loop
17%
of prod calls
in tests
16%
398 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.

estimate

Experimental

Estimated relative cost

Roughly 0.05× the estimated relative cost of fmt.Sprintf . Benchmarked at 614.9 ns/op × 2,128 production calls, normalized so fmt.Sprintf = 1.0.

This is not dollars and not a verdict. Per-op time depends heavily on inputs (argument sizes, contention, patterns), the benchmark ran on a single machine (darwin/arm64 (Apple Silicon), go1.26.0), and static call counts are not runtime frequency. How this is estimated →

who calls this

Notable callers

Production calls into Regexp.ReplaceAllString from notable Go projects. Open one on the map to see what else it hammers.

where it's called

Callsites in the wild

12 representative callsites of 2,526, prioritizing in-loop and non-test usage. We link to source, never display it.

Regexp.ReplaceAllString · 12 of 2,526 callsites

top callers

The modules that reach for it

The modules that call Regexp.ReplaceAllString most in this snapshot.

  • github.com/infiniflow/ragflow1556%
  • github.com/cockroachdb/cockroach773%
  • github.com/fish2018/pansou703%
  • github.com/kubernetes/kubernetes582%
  • github.com/Tencent/WeKnora562%

siblings

More from regexp

The other most-called members in this package. See all →