New posts in Function Construction

How can I plot this spirally surface?

How do I construct a Pattern with Alternatives and PatternSequence without getting Pattern::patvar messages?

How to check the validity of an option value

How to save the caching produced in processing

Multiple output cells, suppressed by semicolon

Why a function returns two different values if copied into a Notebook or imported with Get from a Wolfram Mathematica Package?

How to generate this structure of a list without `While` and the like?

For loop works at top-level but not in a function

Sets and sums of different elements

How to define a function whose parameter have a list with default-value