env is a simple package to retrieve environment variables with default values and convert them to the desired type

To install: go get github.com/lsmoura/env

There are two sets of functions.

The first of functions return the environment value and a possible error. They always take two parameters: a string with the environment variable name and another value with the default value if the environment variable is not present.

• Bool(string, bool) (bool, error)
• Int(string, int) (int, error)
• Int64(string, int64) (int64, error)
• Str(string, string) (string, error)

The second set of functions takes a pointer to the variable where you want the value to be stored as a third parameter and only returns an error object.

• BoolValue(string, bool, *bool) error
• IntValue(string, int, *int) error
• Int64Value(string, int64, *int64) error
• StrValue(string, string, *string) error

Booleans can understand many different values. These values all result int "true": "1", "t", "T", "true", "TRUE", "True", "YES", "yes", "Yes", "Y", "y", "on", "ON", "On" while all of these result in "false": "0", "f", "F", "false", "FALSE", "False", "NO", "no", "No", "N", "n", "off", "OFF", "Off".

If the value is empty, the default value will be used, and if it's not any of those cases, an error will be returned.

This package was written by Sergio Moura

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