I've been building up a similar list of topics that nearly every programmer will at some point be forced to learn against their will and which are not adequately covered in undergrad:
* Text file encodings, in particular Unicode, UTF-8, Mojibake
* Time: Time Zones, leap day / seconds, ISO-8601
* Locales, i18n, and local date/number formats
* IEEE 754 floats: NaN and inf, underflow, overflow, why 0.1 + 0.2 != 0.3, ±0, log1p
* Currencies, comma/dot formats, fixed-point decimal representations, and exchange rates
* Version strings, dependencies, semantic versioning, backwards compatibility
There's another list for web/REST developers, and one for data scientists, but this is the core set.
What'd I miss?
* Text file encodings, in particular Unicode, UTF-8, Mojibake
* Time: Time Zones, leap day / seconds, ISO-8601
* Locales, i18n, and local date/number formats
* IEEE 754 floats: NaN and inf, underflow, overflow, why 0.1 + 0.2 != 0.3, ±0, log1p
* Currencies, comma/dot formats, fixed-point decimal representations, and exchange rates
* Version strings, dependencies, semantic versioning, backwards compatibility
There's another list for web/REST developers, and one for data scientists, but this is the core set.
What'd I miss?