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Use of case and underscore

Identifiers used as feature names often consist of several words expressing what the feature does, e.g., a feature to parse an integer would use some combination of parse and integer in its name. The question is how to create such a composed name.

lowercase UPPERCASE camelCase PascalCase snake_case Snake_Pascal_Case SCREAMING_SNAKE_CASE kebab-case
examples parseinteger PARSEINTEGER parseInteger ParseInteger parse_integer Parse_Integer PARSE_INTEGER parse-integer
asstring ASSTRING asString AsString as_string As_String AS_STRING as-string
dataoutputstream DATAOUTPUTSTREAM dataOutputStream DataOutputStream data_output_stream Data_Output_Stream DATA_OUTPUT_STREAM data-output-stream
searchablelist SEARCHABLELIST searchableList SearchableList searchable_list Searchable_List SEARCHABLE_LIST searchable-list
Short ✅ Yes ✅ Yes ✅ Yes ✅ Yes ❌ No ❌ No ❌ No ❌ No
Easy to type ✅ Yes ✅ Yes (w/ caps lock) ✅ Yes ✅ Yes ✅/❌ Yes/No
name is easy
_ is harder (US/DE: ⇧+'-')
❌ No ❌ No ✅ Yes
Easy to read ❌ No ❌ No ✅ Yes ✅ Yes ✅✅ Yes ✅✅ Yes ❌ No ✅✅ Yes
Words separated ❌ No ❌ No ✅ Yes ✅ Yes ✅✅ clearly ✅✅ clearly ✅✅ clearly ✅✅ clearly
Quiet ✅ Yes ❌ No ✅ Yes ✅ Yes ✅ Yes ✅ Yes ❌ No ✅ Yes
Used in - - Java, Pascal Java, Pascal C++, C, Eiffel, Python Ada Java -
Suggestion for Fuzion ✅ type parameters ✅ features and value types ref types and their constructor features