It is a data structure containing a pattern describing the format of a monetary expression. The pattern contains four fields, which are represented by an array of four char elements called field:
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It is designed to contain four format specifiers (fields) with values defined in the enum type moneypunct::part.
Each field shall expand in the same order as it appears in the array into some part of a monetary expression. The possible values of each field element is one of the following member enum labels:
| value | expands to | notes |
|---|---|---|
| none | Nothing | Cannot be the first specifier. |
| space | White space (at least one, may expand to more) | Cannot be the first or last specifier. |
| symbol | Currency symbol, as returned by moneypunct::curr_symbol | |
| sign | Sign (either moneypunct::pos_sign or moneypunct::neg_sign) If longer than one character, at least the first character is printed in that position | |
| value | Absolute monetary value |
Each specifier can only appear once in the pattern.
Notice that the type of the elements in the field array is char and not moneypunct::part. This was done in the design of the library for efficiency purposes, but field is designed to hold four moneypunct::part values.
See also
| moneypunct::part | Part of pattern (public member type) |