tagged [list]
Casting IEnumerable<T> to List<T>
Casting IEnumerable to List I was wondering if it is possible to cast an `IEnumerable` to a `List`. Is there any way to do it other than copying out each item into a list?
- Modified
- 25 Nov at 20:56
How do I get the number of elements in a list (length of a list) in Python?
How do I get the number of elements in a list (length of a list) in Python? How do I get the number of elements in the list `items`?
Create a dictionary with comprehension
Create a dictionary with comprehension Can I use list comprehension syntax to create a dictionary? For example, by iterating over pairs of keys and values:
- Modified
- 9 Apr at 07:41
How to convert a column of DataTable to a List
How to convert a column of DataTable to a List I have a DataTable with multiple columns. I want to get a `List` out of first column of DataTable. How can I do that?
Is there a concurrent List in Java's JDK?
Is there a concurrent List in Java's JDK? How can I create a concurrent List instance, where I can access elements by index? Does the JDK have any classes or factory methods I can use?
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- 15 Feb at 22:55
Convert list of objects to string in one line
Convert list of objects to string in one line I have a list of objects that implement `ToString()`. I need to convert the whole list to one string in one line. How can I do that?
Bool list check if every item in list is false
Bool list check if every item in list is false I have a `List` with lots of values. What is the most efficient way to check if every single item in the list equals `false`?
Merge two List<object> into one List in Linq
Merge two List into one List in Linq I have two lists. `BeamElevations` and `FloorElevations`. How can I merge these into `Elevations` list and order them based on their Elevation using Linq?
What is better, adjacency lists or adjacency matrices for graph problems in C++?
What is better, adjacency lists or adjacency matrices for graph problems in C++? What is better, adjacency lists or adjacency matrix, for graph problems in C++? What are the advantages and disadvantag...
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- 16 Jan at 12:50
Get Max value from List<myType>
Get Max value from List I have List `List`, my type contains `Age` and `RandomID` Now I want to find the maximum age from this list. What is the simplest and most efficient way?
C# List<string> to string with delimiter
C# List to string with delimiter Is there a function in C# to quickly convert some collection to string and separate values with delimiter? For example: `List names` --> `string names_together = "John...
Convert a list to a string in C#
Convert a list to a string in C# How do I convert a list to a string in C#? When I execute `toString` on a List object, I get: > System.Collections.Generic.List`1[System.String]
Python for-in loop preceded by a variable
Python for-in loop preceded by a variable I saw some code like: What does this mean, and how does it work?
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- 13 Jul at 17:48
How do I check in python if an element of a list is empty?
How do I check in python if an element of a list is empty? I have a list like How do I check if l[i] is empty? and dont't work.
Storing 2 columns into a List
Storing 2 columns into a List How can I store data from 2 columns (from a database) in a List Any help is appreciated
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- 12 Dec at 16:55
How to convert List<T> to HashSet<T> in C#?
How to convert List to HashSet in C#? I have a List that has duplicates of objects. To solve that, I need to convert the List into a HashSet (in C#). Does anyone know how?
Efficiency of List<T>.IndexOf() versus List<T>.FindIndex()
Efficiency of List.IndexOf() versus List.FindIndex() Which one of the methods - `List.IndexOf()`- `List.FindIndex()` is more efficient in terms of processing time? The type of `T` in this instance is ...
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- 11 Jul at 01:8
Check of two list have colliding element?
Check of two list have colliding element? Is there a way to check if one list collides with another? ex:
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- 10 Sep at 06:54
java - iterating a linked list
java - iterating a linked list if I use a for-each loop on a linked list in java, is it guaranteed that I will iterate on the elements in the order in which they appear in the list?
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- 22 Jan at 11:44
Is the order of elements in a JSON list preserved?
Is the order of elements in a JSON list preserved? I've noticed the order of elements in a JSON object not being the original order. What about the elements of JSON lists? Is their order maintained?
- Modified
- 24 Jan at 13:23
Sort a list of objects in Flutter (Dart) by property value
Sort a list of objects in Flutter (Dart) by property value How to sort a list of objects by the alphabetical order of one of its properties (Not the name but the actual value the property holds)?
How to check if element in groovy array/hash/collection/list?
How to check if element in groovy array/hash/collection/list? How do I figure out if an array contains an element? I thought there might be something like `[1, 2, 3].includes(1)` which would evaluate ...