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ERLANG STRFTIME

because formatting times should be easy, like ruby's strftime

strftime:f(now(), "Printed on %m/%d/%Y").    %=> "Printed on 11/19/2007"
strftime:f(now(), "at %I:%M%p").             %=> "at 08:37AM"
strftime:f(now(), "at %I:%M%p", universal).  %=> "at 02:37PM"
strftime:f(now(), "%D-%T.%N").               %=> "11/19/2007-08:38:02.445443"

strftime:f2 uses system local time

strftime:f3 allows you to specify 'local' or 'universal' as third argument.

strftime:f(now(), FormatString)

  • %a - The abbreviated weekday name ('Sun')
  • %A - The full weekday name ('Sunday')
  • %b - The abbreviated month name ('Jan')
  • %B - The full month name ('January')
  • %C - Century (20 in 2009)
  • %d - Day of the month (01..31)
  • %D - Date (%m/%d/%y)
  • %e - Day of the month, blank-padded ( 1..31)
  • %F - Equivalent to %Y-%m-%d (the ISO 8601 date format)
  • %h - Equivalent to %b
  • %H - Hour of the day, 24-hour clock (00..23)
  • %I - Hour of the day, 12-hour clock (01..12)
  • %k - hour, 24-hour clock, blank-padded ( 0..23)
  • %l - hour, 12-hour clock, blank-padded ( 0..12)
  • %L - Millisecond of the second (000..999)
  • %m - Month of the year (01..12)
  • %M - Minute of the hour (00..59)
  • %N - Fractional seconds digits
  • %p - Meridian indicator ('AM' or 'PM')
  • %P - Meridian indicator ('am' or 'pm')
  • %r - time, 12-hour (same as %I:%M:%S %p)
  • %R - time, 24-hour (%H:%M)
  • %s - Number of seconds since 1970-01-01 00:00:00 UTC.
  • %S - Second of the minute (00..60)
  • %T - time, 24-hour (%H:%M:%S)
  • %u - Day of the week as a decimal, Monday being 1. (1..7)
  • %v - VMS date (%e-%b-%Y)
  • %w - Day of the week (Sunday is 0, 0..6)
  • %y - Year without a century (00..99)
  • %Y - Year with century
  • %% - Literal '%' character