SOLID is a mnemonic acronym for five design principles intended to make software designs more understandable, flexible, and maintainable. The principles are a subset of many principles promoted by American software engineer and instructor Robert C. Martin, first introduced in his 2000 paper Design Principles and Design Patterns.
The SOLID concepts are:
- The Single-responsibility principle: "There should never be more than one reason for a class to change."[5] In other words, every class should have only one responsibility.
- The Open–closed principle: "Software entities ... should be open for extension, but closed for modification."
- The Liskov substitution principle: "Functions that use pointers or references to base classes must be able to use objects of derived classes without knowing it."
- The Interface segregation principle: "Many client-specific interfaces are better than one general-purpose interface."
- The Dependency inversion principle: "Depend upon abstractions, [not] concretions."
- The SOLID acronym was introduced later, around 2004, by Michael Feathers.
Although the SOLID principles apply to any object-oriented design, they can also form a core philosophy for methodologies such as agile development or adaptive software development.
Technical details:
• 50% pre-shrunk cotton, 50% polyester
• Fabric weight: 8.0 oz/yd² (271.25 g/m²)
• Air-jet spun yarn with a soft feel and reduced pilling
• Double-lined hood with matching drawcord
• Quarter-turned body to avoid crease down the middle
• 1 × 1 athletic rib-knit cuffs and waistband with spandex
• Front pouch pocket
• Double-needle stitched collar, shoulders, armholes, cuffs, and hem
• Blank product sourced from Honduras, Mexico, or Nicaragua
Size guide
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2XL |
3XL |
| Length (inches) |
27 |
28 |
29 |
30 |
31 |
32 |
| Width (inches) |
20 |
22 |
24 |
26 |
28 |
30 |
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S |
M |
L |
XL |
2XL |
3XL |
| Length (cm) |
69 |
71 |
74 |
76 |
79 |
81 |
| Width (cm) |
51 |
56 |
61 |
66 |
71 |
76 |
