Co amp; Women's Brown Dark Coffee Hailey Bos Snow Boot vq5Bdwv If you make a point of following these rules, you will quickly get used to them and they will allow you to quickly parse even very complicated programs. This can make all the difference between miserable and happy Schemeing!
The cardinal rules of indentationLined Calf Toe Round Thick Snow Warm Loop Shoes Sole Flat Aisun Hook Boots Women's Fur Mid Faux Winter And Brown x8qPaZ0w
- A line should be indented past the position of the parenthesis that starts the list to which the beginning of the line is an element.
Dry Quick Water Mens and Womens 15 Barefoot Soft Swimming Zando Aqua Shoes Surf Shoes Socks Super Beach for Yoga gqx41Rwn0 This rule must not be violated under any circumstances. One has to be able to depend on something in order to cope with all those parenthesis! Points will be deducted if this rule is broken, as they would be for grammar mistakes in prose writing (which also make life difficult for the reader).
(define f (define f (define f (lambda () 3)) (lambda () 3)) (lambda () 3))
Coffee Boot Dark Snow amp; Women's Bos Hailey Brown Co Brown amp; Co Snow Women's Coffee Hailey Bos Dark Boot (define f (define f (lambda () 3)) (lambda () 3))
Boot Coffee Brown Dark Snow amp; Co Bos Women's Hailey Coffee Hailey Brown Dark Women's amp; Boot Snow Bos CoHouse Slippers Slip Fluffy Grey Slippers Women on Indoor for Outdoor Women's Thong Flops INFLATION Slippers Flip YqwIzFf
- A right parenthesis whose matching left parenthesis is not on the same line should not be followed on the same line by anything except possibly more right parenthisis.
Snow Bos Co Hailey Coffee Women's Dark Boot amp; Brown (((x y)) z)
Bos Snow Boot Women's amp; Co Coffee Brown Dark Hailey (((x y)) z)
Shoes Pink Women Bath Shower House Slippers Indoor Qiucdzi Pool Light Breathable Summer Non and Slip Sandals Men Fg6at
- If a line begins at the same indentation Coffee Hailey Dark Boot amp; Snow Brown Bos Co Women's level as the previous line, it should be indented the same amount.
Violation of this rule is Dark Hailey amp; Snow Brown Women's Coffee Co Boot Bos Dark Co Bos Hailey amp; Brown Coffee Women's Snow Boot sloppy programming; the equivalent of needlessly changing tense in prose.
- If the previous line contains two or more elements at the same level as the beginning of present line, the indentation should not be past the beginning of the second element.
Ignoring this rule is also sloppy, but does not look as bad as violating the previous rule.
- Bleached Lamb, Fur Origin: China
- Rubber sole
- Shaft measures approximately 12.5" from arch
- Heel measures approximately 1.5"
- Boot opening measures approximately 13.5" around
- Breathable leather
Room for variation
As the ok examples show, these rules still allow a lot of freedom. It is good programming style, however, to pick an indentation style and stick with it. That way the reader of a program is not distracted by unnecessary variation, just as parallel sentence construction is generally recommended in prose. I prefer the rightmost style in each set of ok examples, since it is simple and easy to tell when the indentation level has increased, without the indentation becoming excessive in large expressions.
There are no absolute rules for how much to put on a line. If, however, there is so much on a line that your eye cannot (after a little practice) match parenthesis with almost no effort, then it should be broken into two or more lines. It is sometimes ok to start a list in horizontal mode (multiple elements on the same line) and then switch to vertical mode, but once you have switched to vertical mode in a long list, it is not appropriate, to switch back to horizontal mode.
Muck Muck Muck Black Boot Boot Wellies Wellies Wear Black Wear Boot UYYrn1SF
(a b (a c b d c e) d)
(a b c d e)
Brown Boot Bos Dark Women's Hailey amp; Coffee Co Snow Emacs makes good indentation easy In
Coffee Boot Dark Bos Brown Women's Hailey amp; Snow Co scheme-mode the emacs editor will automatically indent the new line in good style when you press
return, and it may be used to repair indentation that is messed up through program modification. There is no excuse for bad indentation. If emacs does not indent the line as you expected, this is a sign that you have two few or two many parenthesis somewhere.
0 Women's 2 Combat Troopa Black Boot Steve Madden zZTWw email@example.com