29 lines
513 B
Go
29 lines
513 B
Go
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// For more tutorials: https://blog.learngoprogramming.com
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//
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// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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package main
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import "fmt"
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func main() {
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fmt.Println(headerOf("gif"))
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}
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var headers = map[string]string{
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"png": "\x89PNG\r\n\x1a\n",
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"jpg": "\xff\xd8\xff",
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}
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func headerOf(format string) (header string) {
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defer func() {
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if header == "" {
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panic("unknown format: " + format)
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}
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}()
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return headers[format]
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}
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