# formatWithSimplePattern

Format according to a simple (but limited) formatting pattern.

Each letter in the pattern corresponds to one particular part of a timestamp. Repeating a letter sets the minimum length of that particular part. For instance, where `h:m:s`

would produce `1:2:3`

, `hh:mm:ss`

would produce `01:02:02`

. All parts are padded with 0s and right-aligned, except `f`

(fraction of a second) which is left-aligned. This allows simple usage in the most common cases. For example: `mm:hh:ss.fff`

displays the time up to the millisecond, while `mm:hh:ss.ffffff`

shows microseconds. One more special case is `Y`

, which is a 4-digit number, except when specified only once or twice, in which case it is treated like a two-digit number. I.e. `YYYYYY`

produces `002024`

while `YY`

produces `24`

(omitting the century).

Supported letters are:

`Y`

– the year (4 digits or 2 digits as mentioned above)`M`

– the month of the year (1 to 12)`D`

– the day of the month (1 to 31)`h`

– the hour of the day (0 to 23)`m`

– the minute of the hour (0 to 59)`s`

– the second of the minute (0 to 59)`f`

– the fraction of the second (think of this as the fractional part of a number between 0 and 1)