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Is this really that common a term in computer programming? I can’t say I see it used with any regularity. Maybe it’s a common term in some specific programming

Is this really that common a term in computer programming? I can’t say I see it used with any regularity. Maybe it’s a common term in some specific programming subcultures? Apparently it’s a deprecated Java class, https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Observable.html https://docs.oracle.com/en/java/javase/11/docs/api/java.base... and something in RxJS (which I had never heard of before doing a web search just now) https://www.learnrxjs.io/concepts/rxjs-primer.html https://www.learnrxjs.io/concepts/rxjs-primer.html The term “observable” used as a noun in a programming context seems to me very clunky and vague. YMMV. I am much more familiar with the term “observable” in physics. https://en.wikipedia.org/wiki/Observable https://en.wikipedia.org/wiki/Observable

Procrastes 7y ago
The Java class and many other occurrences grew out of the name of the Observer/Observable design pattern[1] in the "Gang of Four" "Design Patterns" book.[2] 1. https://en.wikipedia.org/wiki/Observer_pattern https://en.wikipedia.org/wiki/Observer_pattern 2. https://en.wikipedia.org/wiki/Design_Patterns https://en.wikipedia.org/wiki/Design_Patterns
- jacobolus 7y ago
  The Go4 call this a “Subject” rather than an “Observable”. As far as I can tell the only occurrence of the word “observable” in the Go4 book is: > Other user interface toolkits that employ this [Observer] pattern are InterViews [LVC89], the Andrew Toolkit [P+88], and Unidraw [VL90]. InterViews defines Observer and Observable (for subjects) classes explicitly. Andrew calls them "view" and "data object," respectively. Unidraw splits graphical editor objects into View (for observers) and Subject parts.
isbvhodnvemrwvn 7y ago
RxJS is just one of several implementations of ReactiveX, it goes well beyond JS: http://reactivex.io/ http://reactivex.io/
blntechie 7y ago
I work primarily in .NET and Angular and it’s a well known term in both of those. Especially confusing with RxJS observable as they are related to JavaScript too.
Can_Not 7y ago
It's a concept in larval.
deleted 7y ago
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Procrastes 7y ago

The Java class and many other occurrences grew out of the name of the Observer/Observable design pattern[1] in the "Gang of Four" "Design Patterns" book.[2] 1. https://en.wikipedia.org/wiki/Observer_pattern https://en.wikipedia.org/wiki/Observer_pattern 2. https://en.wikipedia.org/wiki/Design_Patterns https://en.wikipedia.org/wiki/Design_Patterns

jacobolus 7y ago
The Go4 call this a “Subject” rather than an “Observable”. As far as I can tell the only occurrence of the word “observable” in the Go4 book is: > Other user interface toolkits that employ this [Observer] pattern are InterViews [LVC89], the Andrew Toolkit [P+88], and Unidraw [VL90]. InterViews defines Observer and Observable (for subjects) classes explicitly. Andrew calls them "view" and "data object," respectively. Unidraw splits graphical editor objects into View (for observers) and Subject parts.

isbvhodnvemrwvn 7y ago

RxJS is just one of several implementations of ReactiveX, it goes well beyond JS: http://reactivex.io/ http://reactivex.io/

blntechie 7y ago

I work primarily in .NET and Angular and it’s a well known term in both of those. Especially confusing with RxJS observable as they are related to JavaScript too.

Can_Not 7y ago

It's a concept in larval.

deleted 7y ago

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