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Add troubleshooting about unmarshaling

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Márk Sági-Kazár 2020-12-17 22:13:27 +01:00 committed by GitHub
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@ -829,6 +829,7 @@ y.SetDefault("ContentDir", "foobar")
When working with multiple vipers, it is up to the user to keep track of the
different vipers.
## Q & A
### Why is it called “Viper”?
@ -853,3 +854,9 @@ There has been several attempts to implement case sensitivity, but unfortunately
You can vote for case sensitivity by filling out this feedback form: https://forms.gle/R6faU74qPRPAzchZ9
## Troubleshooting
### Unmarshaling doesn't work
The most common reason for this issue is improper use of struct tags (eg. `yaml` or `json`). Viper uses [github.com/mitchellh/mapstructure](https://github.com/mitchellh/mapstructure) under the hood for unmarshaling values which uses `mapstructure` tags by default. Please refer to the library's documentation for using other struct tags.