Add str.casefold
xhochy opened this issue · comments
Uwe L. Korn commented
- ✔️ pandas function
- ✔️ Python function
- ❌ C++ STL function
- ✔️ no need for a regular expression library
- ❌ need for a Unicode database for capitalization
- ❌ cannot pre-compute output size as casefold letters could have a different byte-width
Pseudo-Code:
Inputs: -
builder = StringBuilder()
for row in rows:
builder.append(map_utf8_chararcters(utf8_casefold, row))