(Ruby) Compute Difference Between Two DateTime Strings

Demonstrates how to compute the difference between two datetime strings.

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

require 'chilkat'

# Imagine we have these strings:

t1 = "2022-11-14 15:45:38"
t2 = "2022-11-16 17:23:41"

# How many minutes are between the two?

# First, we'd want load each date/time into a Chilkat CkDateTime object.
# In this case, there are no CkDateTime methods that accept the above format.
# However.. the CkDateTime's SetFromTimestamp will accept a date in the format "YYYY-MM-DDThh:mm:ssZ"

# First modify the above dates to the timestamp format.
sb1 = Chilkat::CkStringBuilder.new()
sb1.Append(t1)
count = sb1.Replace(" ","T")
sb1.Append("Z")

sb2 = Chilkat::CkStringBuilder.new()
sb2.Append(t2)
count = sb2.Replace(" ","T")
sb2.Append("Z")

# Load each into a CkDateTime
dt1 = Chilkat::CkDateTime.new()
dt1.SetFromTimestamp(sb1.getAsString())
# verify...
print dt1.getAsTimestamp(false) + "\n";

dt2 = Chilkat::CkDateTime.new()
dt2.SetFromTimestamp(sb2.getAsString())
# verify...
print dt2.getAsTimestamp(false) + "\n";

# Get the difference in seconds
diffSeconds = dt2.DiffSeconds(dt1)
print "Difference in seconds: " + diffSeconds.to_s() + "\n";
print "Difference in minutes: " + (diffSeconds / 60).to_s() + "\n";