Ending up with list of objects in data analysis with OOP
There is something fundamental I don't understand about object-oriented programming:
Consider a simple example on different persons: You would create a class "person" and generate different instances of it with different age and height etc.
Now I want to get the mean age or height of all instances.
I would summarize the instances of the class in a list and then loop through the list.
This works, but what would be the advantage over having an array? The array seems more efficient to me.
I don't do OOP and think of vectors and arrays (tables) all the time.
I can imagine a list of objects can help to handle complexity better as programs get more complicated, but then I'm also worried about the performance of looping through lists of objects.
I'm surprised to find very little about this on the web. I think I was using the wrong search terms.
list oop
asked Nov 24 '18 at 14:27
NicolasBourbakiNicolasBourbaki
1058
add a comment |
There is something fundamental I don't understand about object-oriented programming:
Consider a simple example on different persons: You would create a class "person" and generate different instances of it with different age and height etc.
Now I want to get the mean age or height of all instances.
I would summarize the instances of the class in a list and then loop through the list.
This works, but what would be the advantage over having an array? The array seems more efficient to me.
I don't do OOP and think of vectors and arrays (tables) all the time.
I can imagine a list of objects can help to handle complexity better as programs get more complicated, but then I'm also worried about the performance of looping through lists of objects.
I'm surprised to find very little about this on the web. I think I was using the wrong search terms.
list oop
asked Nov 24 '18 at 14:27
NicolasBourbakiNicolasBourbaki
1058
having an array of "what" ?
– Islam El-Rougy
Nov 24 '18 at 14:29
May I ask the coding language you are using?
– progmatico
Nov 24 '18 at 18:17
add a comment |
There is something fundamental I don't understand about object-oriented programming:
Consider a simple example on different persons: You would create a class "person" and generate different instances of it with different age and height etc.
Now I want to get the mean age or height of all instances.
I would summarize the instances of the class in a list and then loop through the list.
This works, but what would be the advantage over having an array? The array seems more efficient to me.
I don't do OOP and think of vectors and arrays (tables) all the time.
I can imagine a list of objects can help to handle complexity better as programs get more complicated, but then I'm also worried about the performance of looping through lists of objects.
I'm surprised to find very little about this on the web. I think I was using the wrong search terms.
list oop
asked Nov 24 '18 at 14:27
NicolasBourbakiNicolasBourbaki
1058
There is something fundamental I don't understand about object-oriented programming:
Consider a simple example on different persons: You would create a class "person" and generate different instances of it with different age and height etc.
Now I want to get the mean age or height of all instances.
I would summarize the instances of the class in a list and then loop through the list.
This works, but what would be the advantage over having an array? The array seems more efficient to me.
I don't do OOP and think of vectors and arrays (tables) all the time.
I can imagine a list of objects can help to handle complexity better as programs get more complicated, but then I'm also worried about the performance of looping through lists of objects.
I'm surprised to find very little about this on the web. I think I was using the wrong search terms.
list oop
list oop
asked Nov 24 '18 at 14:27
NicolasBourbakiNicolasBourbaki
1058
asked Nov 24 '18 at 14:27
NicolasBourbakiNicolasBourbaki
1058
asked Nov 24 '18 at 14:27
NicolasBourbakiNicolasBourbaki
1058
asked Nov 24 '18 at 14:27
NicolasBourbakiNicolasBourbaki
1058
asked Nov 24 '18 at 14:27
NicolasBourbakiNicolasBourbaki
1058
1058
having an array of "what" ?
– Islam El-Rougy
Nov 24 '18 at 14:29
May I ask the coding language you are using?
– progmatico
Nov 24 '18 at 18:17
add a comment |
having an array of "what" ?
– Islam El-Rougy
Nov 24 '18 at 14:29
May I ask the coding language you are using?
– progmatico
Nov 24 '18 at 18:17
having an array of "what" ?
– Islam El-Rougy
Nov 24 '18 at 14:29
having an array of "what" ?
– Islam El-Rougy
Nov 24 '18 at 14:29
May I ask the coding language you are using?
– progmatico
Nov 24 '18 at 18:17
May I ask the coding language you are using?
– progmatico
Nov 24 '18 at 18:17
add a comment |
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having an array of "what" ?
– Islam El-Rougy
Nov 24 '18 at 14:29
May I ask the coding language you are using?
– progmatico
Nov 24 '18 at 18:17