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Lindy effect - Wikipedia
The Lindy effect is a theory that the future life expectancy of some non-perishable things like a technology or an idea is proportional to their current age, so that every additional period of survival implies a longer remaining life expectancy.[1] Where the Lindy effect applies, mortality rate decreases with time. In contrast, living creatures and mechanical things follow a bathtub curve where, after "childhood", the mortality rate increases with time. Because life expectancy is probabilistically derived, a thing may become extinct before its "expected" survival. In other words, one needs to gauge both the age and "health" of the thing to determine continued survival.
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3 days ago by nhaliday
oop - Functional programming vs Object Oriented programming - Stack Overflow
When you anticipate a different kind of software evolution:
- Object-oriented languages are good when you have a fixed set of operations on things, and as your code evolves, you primarily add new things. This can be accomplished by adding new classes which implement existing methods, and the existing classes are left alone.
- Functional languages are good when you have a fixed set of things, and as your code evolves, you primarily add new operations on existing things. This can be accomplished by adding new functions which compute with existing data types, and the existing functions are left alone.

When evolution goes the wrong way, you have problems:
- Adding a new operation to an object-oriented program may require editing many class definitions to add a new method.
- Adding a new kind of thing to a functional program may require editing many function definitions to add a new case.

This problem has been well known for many years; in 1998, Phil Wadler dubbed it the "expression problem". Although some researchers think that the expression problem can be addressed with such language features as mixins, a widely accepted solution has yet to hit the mainstream.

What are the typical problem definitions where functional programming is a better choice?

Functional languages excel at manipulating symbolic data in tree form. A favorite example is compilers, where source and intermediate languages change seldom (mostly the same things), but compiler writers are always adding new translations and code improvements or optimizations (new operations on things). Compilation and translation more generally are "killer apps" for functional languages.
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28 days ago by nhaliday
Pure CSS Arrows | wdrfree post
Curated Collection of free HTML and CSS arrow  source code examples: css arrow shape, triangle, line, buttons, animated
CSS Triangle Shapes
We can create simple triangular shapes with css using
css  arrows 
september 2018 by wkorfhage
Pure CSS Arrows | wdrfree post
I’ll be using these instead of SVG heretoforward:

css  arrows  from twitter_favs
september 2018 by furtive

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