August 30, 2018

A CRON expression is a string composed of six fields (in some implementation seven), separated by a whites space, representing a time schedule. CRON expressions are used in various job schedulers (such as the Linux job scheduler, the Quartz scheduler, Azure scheduler for functions, etc.). Recently, I have written a C++ library for parsing such expressions and determining the next occurrence of the scheduled time. The library is called croncpp. It is written in C++17, is header-only, open-source and cross-platform, and can be found on GitHub.

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