ex5_9

command

v0.0.0-...-94c99f4 Latest Latest Go to latest Published: Dec 23, 2019 License: Apache-2.0 Imports: 2 Imported by: 0

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Valid go.mod file

The Go module system was introduced in Go 1.11 and is the official dependency management solution for Go.
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Tagged version

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Stable version

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Write a function `expand(s string, f func(string) string) string` that replaces each substring `$foo` within `s` by the text returned by `f("foo")`.