How to get current date and time in Perl?
How to get current date and time in Perl?
Perl – Date and Time 1 Current Date and Time. Let’s start with localtime () function, which returns values for the current date and time if given no arguments. 2 GMT Time. The function gmtime () works just like localtime () function but the returned values are localized for the standard Greenwich time zone. 3 Format Date and Time.
How to convert a given number of seconds into date and time?
You can convert a given number of seconds into date and time string as follows − You can use the POSIX function strftime () to format date and time with the help of the following table. Please note that the specifiers marked with an asterisk (*) are locale-dependent.
What is the maximum length of a year in Perl?
This is stored as an integer, meaning that the upper and lower bounds are based on your Perl’s integer size ($Config{ivsize}). The limit on 32-bit systems is around 2^29 days, which gets you to year (+/-)1,469,903. On a 64-bit system you get 2^62 days, (+/-)12,626,367,463,883,278 (12.626 quadrillion).
How can I calculate the total time passed in a string?
Both times are in the HH:MM:SS format. I could simply split the time strings on the colons, and then perform the maths on each set of digits, which is relatively straightforward: and so on for the minutes and hours, and then get calculate the total time passed by converting each result to seconds and adding them up.
How do I apply a regular expression in Perl?
The basic method for applying a regular expression is to use the pattern binding operators =~ and !~. In Perl there are multiple libraries available for handling date and time such as Date::Parse and Time::Piece; both of these libraries come with lots of flexible functions to handle the more complex requirement.
How to extract the date from a CSV file in Perl?
In Perl generally, we have to read CSV (Comma Separated Values) files to extract the required data. Sometimes there are dates in the file name like sample 2014-02-12T11:10:10.csv or there could be a column in a file that has a date in it. These dates can be of any pattern like YYYY-MM-DDThh:mm:ss or dd/mm/yyyy hh.mm.ss.
Is the CPAN library Perl’s biggest strength?
In any case, the CPAN library is one of Perl’s biggest strengths, and it is foolish to restrict oneself to only the core modules. – Borodin Dec 4 ’16 at 11:30
