(Ruby) Generate ULID

See more ULID/UUID Examples

Generate a ULID using a specified timestamp or the current system date timestamp.

Important: Chilkat's ULID functionality was introduced in v9.5.0.94.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

dt = Chilkat::CkDateTime.new()

# Set dt to the current system date/time.
dt.SetFromCurrentSystemTime()

# Generate a ULID for the current UTC date/time.
# (i.e. the current UTC UNIX-time)
utc = true
ulid = dt.ulidGenerate(utc)
print ulid + "\n";

# example result: 01GRGCH4J88RECEN4D4VK4F629

# Generate a ULID using the local timezone's current time.
utc = false
ulid = dt.ulidGenerate(utc)
print ulid + "\n";

# example result: 01GRH14AA82EY9A7S99YYF2QDY

# -----------------------------------------------
# To generate a ULID using a specific UNIX timestamp

# For example, the Unix timestamp for Sun, 05 Feb 2023 14:57:46 GMT
# is 1675609066

# For more information about the Epoch Unix Timestamp, see Epoch Unix Timestamp

# To generate a ULID from a specified date/time, set the CkDateTime and then generate the ULID.
dt2 = Chilkat::CkDateTime.new()
utc = true
dt2.SetFromUnixTime(utc,1675609066)
ulid = dt2.ulidGenerate(utc)
print ulid + "\n";

# example result: 01GRH1AJGG3P5K04DJHN3QJCX3