19 lines
361 B
Nim
19 lines
361 B
Nim
discard """
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output: "my awesome concat"
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"""
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var
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calls = 0
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proc `&&`(s: varargs[string]): string =
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result = s[0]
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for i in 1..len(s)-1: result.add s[i]
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inc calls
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template optConc{ `&&` * a }(a: string): expr = &&a
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let space = " "
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echo "my" && (space & "awe" && "some " ) && "concat"
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# check that it's been optimized properly:
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doAssert calls == 1
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