Questions tagged [extension-methods]
Methods that extend a given type, adding functionality to any instance of that type, even if the type in question is defined in a separate assembly. For example, a "Disemvowel" extension method could be written to add disemvoweling functionality to any "String" object.
178 questions
6
votes
3
answers
451
views
`repeat_and_join` function for strings and chars in rust
Background
I'm trying to write a helper function for constructing repeating strings with a separator.
...
- 183
4
votes
2
answers
213
views
Swift String-extension 'countOccurrencesOfChar'
Loosely inspired by Ruby's String.count-method I wrote a similar Swift-method myself as an extension to the String-class. Then I had the idea to use a second parameter with which you can control if ...
- 5,044
4
votes
1
answer
144
views
Turn List<Either<A, B>> into Either<A, List<B>>
I'm trying to integrate Arrow-kt's Either into an application that needs to parse and validate filter input. This input is a comma separated list of criteria. ...
- 44.7k
1
vote
1
answer
135
views
Take meal orders from breakfast, lunch and dinner menus
I have an exercise requires me to write a service to management menu.
The requirement like this:
Food menu includes: breakfast menu, lunch menu, dinner menu. The three menu haves list menu item( name, ...
- 11
3
votes
2
answers
2k
views
Extension methods to modify an async Task's type from Task<IEnumerable<T>> to Task<List<T>>
I've written a lot of (await SomeTask).AsList(); in my project, and it's kind of annoying to keep wrapping it.
To fix this I've written a little extension method on ...
- 133
3
votes
1
answer
991
views
UIImage downscale and compression
getFinalImageData(:UIImage) takes a UIImage and downscales its size dimensions (to 400 ...
- 133
6
votes
4
answers
1k
views
Naming a method that gets the next enum value or starts from the beginning if the given value is the last
I'm struggling to find a proper name for a specific method (in code named NameOfExtension), and would also like some feedback about its implementation.
I am ...
- 163
2
votes
5
answers
485
views
Substring extension method with a method of removal
I consistently have code where I need to pull individual chunks of substrings out of a larger string; while I won't get into details, it's easy to replicate in a proof of concept:
...
- 929
0
votes
2
answers
779
views
Extension method to get the Sunday date from current date based on weekOffset
I want to write an extension method for getting Sunday Date based on weekOffset and current date. For example if weekOffset value is 1 that means next week sunday date and if weekOffset is 2 that ...
- 1
3
votes
1
answer
558
views
Extending method chaining IEnumerable with Add..If
I'm trying to write an extension (method chaining) for playing around a bit.
What I made work is an extension to add an item to the list (what is pretty easy):
...
- 682
1
vote
2
answers
129
views
Use proxy for jQuery-like DOM extensions
I have cleared all my scripting from the use of JQuery, but sometimes I miss a few handy extensions. Now I'm playing with the idea to "extend" ...
- 587
4
votes
3
answers
214
views
DistinctCount extension method
Here I go again. I have been finding a fairly common pattern in business logic code. And that pattern looks like this: ...
- 14.6k
1
vote
1
answer
2k
views
Pass class property as parameter to extension method
I have the following class structure:
MyAttribute.cs
...
- 192
2
votes
1
answer
1k
views
Programmatically getting the GUID of an application
Intrigued by the events chronicled here (also here and here), I saw the inherent utility in having a program-specific GUID available. The SO answers that were correct seemed a bit tightly-coupled and ...
- 14.6k
2
votes
0
answers
369
views
Extension method: Task<T>.CoalesceAwait
There has been ongoing concern about the question of awaiting a task that could possibly be null, as when using null-coalescing operators. Consider the following:
...
- 243