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- python - How to convert list to string - Stack Overflow
Agree with @Bogdan This answer creates a string in which the list elements are joined together with no whitespace or comma in between You can use ', ' join(list1) to join the elements of the list with comma and whitespace or ' ' join(to) to join with only white space –
- How to cast List lt;Object gt; to List lt;MyClass gt; - Stack Overflow
With Java 8 Streams: Sometimes brute force casting is fine: List<MyClass> mythings = (List<MyClass>) (Object) objects
- What is the syntax to insert one list into another list in python?
List slicing is quite flexible as it allows to replace a range of entries in a list with a range of
- Get a list from Pandas DataFrame column headers
Create a list of keys columns - object method to_list() and the Pythonic way: my_dataframe keys() to_list() list(my_dataframe keys()) Basic iteration on a DataFrame returns column labels: [column for column in my_dataframe] Do not convert a DataFrame into a list, just to get the column labels
- What is the difference between List. of and Arrays. asList?
Let summarize the differences between List of and Arrays asList List of can be best used when data set is less and unchanged, while Arrays asList can be used best in case of large and dynamic data set
- TypeError: list indices must be integers or slices, not str
1 A list is used as if it were a dictionary 1 1 Index a list as if it was a dictionary This case commonly occurs when a json object is converted into a Python object but there's a dictionary nested inside a list It is especially annoying (and easy to overlook) if the list has a single dictionary inside it
- pandas dataframe index: to_list () vs tolist () - Stack Overflow
tolist() is a method of NumPy arrays that returns a list representation of the array to_list() is a method of Pandas dataframes that returns a list representation of the dataframe Although both methods return the same output, their differences lie in their origins and compatibility *to_list()* is Pandas-specific
- Array versus List lt;T gt;: When to use which? - Stack Overflow
Using e g List<Point> list, it would be necessary to instead say Point temp=list[3]; temp x+=q; list[3]=temp; It would be helpful if List<T> had a method Update<TP>(int index, ActionByRefRef<T,TP> proc, ref TP params) and compilers could turn list[3] x+=q; into {list Update(3, (ref int value, ref int param)=>value+=param, ref q); but no
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