Contents
- 1 What can I use instead of for loop in Python?
- 2 Is it better to use for loop instead of while if you are iterating through a sequence like list )?
- 3 What type of variable can be assigned to only once?
- 4 How to use IF-ELSE statements and loops in R?
- 5 What’s the trick to repeating things in lapply?
- 6 Is there a whole family of looping functions in R?
What can I use instead of for loop in Python?
Replacing For Loops
- map() and filter() are natively available.
- The lambda expression is the first argument in all three functions while the iterable is the second argument.
Is it better to use for loop instead of while if you are iterating through a sequence like list )?
Is it better to use for loop instead of while if you are iterating through a sequence (like: list)? Yes, for loop is more pythonic choice.
What type of variable can be assigned to only once?
final variable
A final variable in Java can be assigned a value only once, we can assign a value either in declaration or later.
What can I use instead of for each?
What is another word for each?
| for each | per |
|---|---|
| to | for |
| in | of |
| out of | contained in each |
| in accordance with | to each |
How do you loop a list?
There are 7 ways you can iterate through List.
- Simple For loop.
- Enhanced For loop.
- Iterator.
- ListIterator.
- While loop.
- Iterable.forEach() util.
- Stream.forEach() util.
How to use IF-ELSE statements and loops in R?
The statement x < cmeans “Is the value of xless than the value of c?” <=means “less than or equal”. The statement x <= dmeans “Is the value of xless or equal to the value of d?” >means “greater than”. The statement x >e means “Is the value of xgreater than the value of e?” >=means “greater than or equal”.
What’s the trick to repeating things in lapply?
The challenge is to identify the parts of your analysis that stay the same and those that differ for each call of the function. The trick to using lapply is to recognise that only one item can differ between different function calls.
Is there a whole family of looping functions in R?
In R there is a whole family of looping functions, each with their own strengths. First, it is good to recognise that most operations that involve looping are instances of the split-apply-combine strategy (this term and idea comes from the prolific Hadley Wickham , who coined the term in this paper ). You start with a bunch of data.
When to use the generic looping function in R?
This is crucial. If each each iteration is independent, then you can cycle through them in whatever order you like. Generally, we argue that you should only use the generic looping functions for, while, and repeat when the order or operations is important. Otherwise reach for one of the apply tools.