Four sides of square: Difference between revisions
Content added Content deleted
(→Procedural: added another version showing interesting Python features) |
m (→Procedural: create separate section; improve comment) |
||
| Line 481: | Line 481: | ||
See Raku output. |
See Raku output. |
||
===Elaborate procedural=== |
|||
The following version illustrates several features of Python, such as default arguments, nested functions with lexical scoping, generators, and convenient syntax for creating sets and performing set operations such as intersection. |
The following version illustrates several features of Python, such as default arguments, nested functions with lexical scoping, generators, and convenient syntax for creating sets and performing set operations such as intersection. |
||
| Line 488: | Line 488: | ||
def is_at_border(row, col): |
def is_at_border(row, col): |
||
# `&` is set intersection: if the set {row, col} intersects the set |
# `&` is set intersection: if the set {row, col} intersects the set |
||
# {0, size-1}, then at least one of row, col is either 0 or size-1 |
# {0, size-1}, then at least one of (row, col) is either 0 or size-1 |
||
return {row, col} & {0, size-1} |
return {row, col} & {0, size-1} |
||