34 lines
647 B
Go
34 lines
647 B
Go
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package main
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import "fmt"
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// ---------------------------------------------------------
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// EXERCISE: Refactor
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//
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// In the headerOf function, instead of using a switch,
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// use a map. Declare it at the package-level.
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//
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// RESTRICTION
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//
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// For panicking, use a deferred function and a named param.
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//
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// EXPECTED OUTPUT
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//
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// Please run the solution.
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//
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// ---------------------------------------------------------
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func main() {
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fmt.Println(headerOf("gif"))
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}
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func headerOf(format string) string {
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switch format {
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case "png":
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return "\x89PNG\r\n\x1a\n"
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case "jpg":
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return "\xff\xd8\xff"
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}
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panic("unknown format: " + format)
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}
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