6f4d89045a
Doesnt require storing the result of the function in a dedicated global variable with a dedicated getter function
25 lines
348 B
Go
25 lines
348 B
Go
// License: GPLv3 Copyright: 2023, Kovid Goyal, <kovid at kovidgoyal.net>
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package utils
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import (
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"fmt"
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"testing"
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)
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var _ = fmt.Print
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func TestOnce(t *testing.T) {
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num := 0
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var G = (&Once[string]{Run: func() string {
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num++
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return fmt.Sprintf("%d", num)
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}}).Get
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G()
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G()
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G()
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if num != 1 {
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t.Fatalf("num unexpectedly: %d", num)
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}
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}
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