tagged [list]
Fastest way to check if a value exists in a list
Fastest way to check if a value exists in a list What is the fastest way to check if a value exists in a very large list?
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- 6 Jun at 04:40
c# When should I use List and when should I use arraylist?
c# When should I use List and when should I use arraylist? As the title says when should I use `List` and when should I use `ArrayList`? Thanks
finding the maximum length of lists in c#
finding the maximum length of lists in c# After I have created a list and added the contents to it, how can I find the length of the list?
How does one convert a HashMap to a List in Java?
How does one convert a HashMap to a List in Java? In Java, how does one get the values of a `HashMap` returned as a `List`?
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- 5 Mar at 13:45
How can I turn a string into a list in Python?
How can I turn a string into a list in Python? How can I turn a string (like `'hello'`) into a list (like `[h,e,l,l,o]`)?
How do I merge multiple lists into one list?
How do I merge multiple lists into one list? I have many lists: I want to merge those into a single list:
C# LINQ find duplicates in List
C# LINQ find duplicates in List Using LINQ, from a `List`, how can I retrieve a list that contains entries repeated more than once and their values?
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- 31 Aug at 11:1
Finding the index of an item in a list
Finding the index of an item in a list Given a list `["foo", "bar", "baz"]` and an item in the list `"bar"`, how do I get its index `1`?
Plain, linked and double linked lists: When and Why?
Plain, linked and double linked lists: When and Why? In what situations should I use each kind of list? What are the advantages of each one?
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- 11 Oct at 15:2
How do I check if a variable is an array in JavaScript?
How do I check if a variable is an array in JavaScript? How do I check if a variable is an array in JavaScript?
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- 10 Apr at 12:59
What's the fastest algorithm for sorting a linked list?
What's the fastest algorithm for sorting a linked list? I'm curious if O(n log n) is the best a linked list can do.
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- 2 Jun at 00:50
How to cast or convert List of objects to queue of objects
How to cast or convert List of objects to queue of objects How can one convert a list of objects to a queue thereby maintaining the same order?
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- 12 Jun at 19:20
Convert contents of DataGridView to List in C#
Convert contents of DataGridView to List in C# What is the best way to grab the contents of a DataGridView and place those values into a list in C#?
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- 27 Nov at 07:40
Get distinct items from a list
Get distinct items from a list I have a list of objects with three integer properties. How can I get the distinct values of first integer property from my list?
Add to integers in a list
Add to integers in a list I have a list of integers and I was wondering if it would be possible to add to individual integers in this list.
Print a list in reverse order with range()?
Print a list in reverse order with range()? How can you produce the following list with `range()` in Python?
Get list of threads
Get list of threads I want to list all running threads but not by using the `List` class. I want to dynamically observe running threads. How can I do that?
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- 19 Oct at 13:16
Remove the last N elements of a list
Remove the last N elements of a list Is there a a better way to remove the last N elements of a list.
Initializing a list to a known number of elements in Python
Initializing a list to a known number of elements in Python Right now I am using a list, and was expecting something like: Should I use array instead?
List to array conversion to use ravel() function
List to array conversion to use ravel() function I have a list in python and I want to convert it to an array to be able to use `ravel()` function.
How to remove an element from a list by index
How to remove an element from a list by index How do I remove an element from a list ? I found `list.remove()`, but this slowly scans the list for an item .
Cast IList to List
Cast IList to List I am trying to cast `IList` type to `List` type but I am getting error every time. `Model.subproduct` returns `IList`.
How do I find a list of Homebrew's installable packages?
How do I find a list of Homebrew's installable packages? Recently I installed [Brew](https://brew.sh/). How can I retrieve a list of available brew packages to install?
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- 4 Aug at 05:45
How to create a drop-down list?
How to create a drop-down list? How can I create a drop-down list? I've tried a ScrollView but it's not exactly what I need.
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- 13 Apr at 19:39
Python Array with String Indices
Python Array with String Indices Is it possible to use strings as indices in an array in python? For example:
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- 22 Sep at 02:14
Compute list difference
Compute list difference In Python, what is the best way to compute the difference between two lists? example
Convert List<string> to ArrayList
Convert List to ArrayList Who knows the easiest way to convert a `List` of strings to an `ArrayList`? I tried setting `(ArrayList)` before the code but this doesn't do anything.
How to get the first element of the List or Set?
How to get the first element of the List or Set? I'd like to know if I can get the first element of a list or set. Which method to use?
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- 12 Mar at 03:20
How do I find the duplicates in a list and create another list with them?
How do I find the duplicates in a list and create another list with them? How do I find the duplicates in a list of integers and create another list of the duplicates?
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- 17 Jul at 09:28
Can LINQ ForEach have if statement?
Can LINQ ForEach have if statement? Is it possible to add `if`-statement inside LINQ `ForEach` call?
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- 4 Jul at 03:34
Find a KeyValuePair inside a List
Find a KeyValuePair inside a List Suppose I have I know the string but I want to find its integer. How do I find the keyvaluepair inside this List?
C#: params keyword vs. list
C#: params keyword vs. list What are the pro/cons of using the params keyword vs. a List as input to some c# function? Mainly what are the considerations and other trade offs.
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- 22 Jan at 01:29
How to find all duplicate from a List<string>?
How to find all duplicate from a List? I have a `List` which has some words duplicated. I need to find all words which are duplicates. Any trick to get them all?
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- 23 Sep at 20:3
Calculating arithmetic mean (one type of average) in Python
Calculating arithmetic mean (one type of average) in Python Is there a built-in or standard library method in Python to calculate the arithmetic mean (one type of average) of a list of numbers?
How would I distinct my list of key/value pairs
How would I distinct my list of key/value pairs If I have a list `List>`ex. how can I distinc this list?
How do I create a list with numbers between two values?
How do I create a list with numbers between two values? How do I create an ascending list between two values? For example, a list between 11 and 16:
Check if list is empty in C#
Check if list is empty in C# I have a generic list object. I need to check if the list is empty. How do I check if a `List` is empty in C#?
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- 25 Aug at 19:38
List<T> or IList<T>
List or IList Can anyone explain to me why I would want to use IList over List in C#? [Why is it considered bad to expose List](https://stackoverflow.com/questions/387937)
Auto-initializing C# lists
Auto-initializing C# lists I am creating a new C# List (`List`). Is there a way, other than to do a loop over the list, to initialize all the starting values to 0?
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- 24 Sep at 14:12
How do I check if there are duplicates in a flat list?
How do I check if there are duplicates in a flat list? For example, given the list `['one', 'two', 'one']`, the algorithm should return `True`, whereas given `['one', 'two', 'three']` it should return...
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- 2 Apr at 11:29
PHP Get all subdirectories of a given directory
PHP Get all subdirectories of a given directory How can I get all sub-directories of a given directory without files, `.`(current directory) or `..`(parent directory) and then use each directory in a ...
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- 11 Jan at 09:56
Python set to list
Python set to list How can I convert a set to a list in Python? Using doesn't work. It gives me:
How can I convert comma separated string into a List<int>
How can I convert comma separated string into a List This doesn't work cause the split method returns a string[]
Fast/efficient way to get index of minimum value in List<T>?
Fast/efficient way to get index of minimum value in List? Is there any way to find minimum value index more efficient/faster than this?
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- 1 May at 17:41
What are the advantages of list initialization (using curly braces)?
What are the advantages of list initialization (using curly braces)?
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- 28 May at 06:47
How Big can a Python List Get?
How Big can a Python List Get? In Python, how big can a list get? I need a list of about 12000 elements. Will I still be able to run list methods such as sorting, etc?