The Decimals type contains different strategies for handling the number of decimals when formatting the number:

• Min Int shows at least a certain amount of decimal digits, adding trailing zeros if needed.
• Max Int shows up to a certain amount of decimal digits, discarding trailing zeros if needed.
• Exact Int shows an exact number of decimal digits, adding trailing zeros if needed.

This is the Locale type and constructor.

The base locale matches Elm's native String.fromFloat using unicode minus (U+2212) instead of an hyphen/dash.

Reads a JavaScript's Number.toLocaleString() return value to create the Locale according to the user's local settings. This is useful when combined with Elm's Flags, e.g.:

Elm.Main.init\({
  flags: {
    numberFormat: (Math.PI * -1000).toLocaleString()
  }
}\)

Then we use fromString to read this value from the flag (although it does not cover the case with zero decimal places). If it fails to parse the string to a Locale, it will return the base locale.

fromString "-3,141.593"
--> { base
--> | decimals = Exact 3
--> , thousandSeparator = "
--> , decimalSeparator = "."
--> , negativePrefix = "-"
--> }

Locale used in France, Canada, Finland and Sweden. It has 3 decimals digits, uses a thin space (U+202F) as thousand separator and a , as decimal separator. It uses a minus sign (not a hyphen) as a prefix for negative numbers, but no suffix or prefix for positive numbers.

Locale used in Spain, Italy and Norway. It has 3 decimals digits, uses a . as thousand separator and a , as decimal separator. It uses a minus sign (not a hyphen) as a prefix for negative numbers, but no suffix or prefix for positive numbers.

Locale used in the United States, Great Britain and Thailand. It has 2 decimals digits, uses a , as thousand separator and a . as decimal separator. It uses a minus sign (not a hyphen) as a prefix for negative numbers, no suffix or prefix for positive numbers.