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22 lines
596 B
Markdown
22 lines
596 B
Markdown
8 months ago
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# Maps
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https://quii.gitbook.io/learn-go-with-tests/go-fundamentals/maps
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Build our own map
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## Gotcha
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A gotcha with maps is that they can be a nil value. A nil map behaves like an empty map when reading, but attempts to write to a nil map will cause a runtime panic. You can read more about maps here.
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Therefore, you should never initialize an empty map variable:
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var m map[string]string
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Instead, you can initialize an empty map like we were doing above, or use the make keyword to create a map for you:
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var dictionary = map[string]string{}
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// OR
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var dictionary = make(map[string]string)
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