Interface FormatSpecifierObject

Alignment used for format, as set by choosing one of the following:

'>' - Forces the field to be right-aligned within the available space. (Default behavior). '<' - Forces the field to be left-aligned within the available space. '^' - Forces the field to be centered within the available space. '=' - Like '>', but with any sign and symbol to the left of any padding.

The comma (,) option enables the use of a group separator, such as a comma for thousands.

fill can be any character. The presence of a fill character is signaled by the align character following it.

Depending on the type, the precision either indicates the number of digits that follow the decimal point (types 'f' and '%'), or the number of significant digits (types '' (none), 'e', 'g', 'r', 's' and 'p'). If the precision is not specified, it defaults to 6 for all types except '' (none), which defaults to 12. Precision is ignored for integer formats (types 'b', 'o', 'd', 'x', 'X' and 'c').

See precisionFixed and precisionRound for help picking an appropriate precision.

The sign can be:

'-' - nothing for positive and a minus sign for negative. (Default behavior.) '+' - a plus sign for positive and a minus sign for negative. '(' - nothing for positive and parentheses for negative. ' ' (space) - a space for positive and a minus sign for negative.

The symbol can be:

'$' - apply currency symbols per the locale definition. '#' - for binary, octal, or hexadecimal notation, prefix by 0b, 0o, or 0x, respectively. '' (none) - no symbol. (Default behavior.)

The '~' option trims insignificant trailing zeros across all format types. This is most commonly used in conjunction with types 'r', 'e', 's' and '%'.

The available type values are:

'e' - exponent notation. 'f' - fixed point notation. 'g' - either decimal or exponent notation, rounded to significant digits. 'r' - decimal notation, rounded to significant digits. 's' - decimal notation with an SI prefix, rounded to significant digits. '%' - multiply by 100, and then decimal notation with a percent sign. 'p' - multiply by 100, round to significant digits, and then decimal notation with a percent sign. 'b' - binary notation, rounded to integer. 'o' - octal notation, rounded to integer. 'd' - decimal notation, rounded to integer. 'x' - hexadecimal notation, using lower-case letters, rounded to integer. 'X' - hexadecimal notation, using upper-case letters, rounded to integer. 'c' - converts the integer to the corresponding unicode character before printing.

The type '' (none) is also supported as shorthand for '~g' (with a default precision of 12 instead of 6), and the type 'n' is shorthand for ',g'. For the 'g', 'n' and '' (none) types, decimal notation is used if the resulting string would have precision or fewer digits; otherwise, exponent notation is used.

The width defines the minimum field width; if not specified, then the width will be determined by the content.

The zero (0) option enables zero-padding; this implicitly sets fill to 0 and align to =.