enumerable | Enumerable module of the Ruby language
kandi X-RAY | enumerable Summary
kandi X-RAY | enumerable Summary
This project has as a goal the recreation of some of the methods provided by the Enumerable module. Project instructions are in The Odin Project.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of enumerable
enumerable Key Features
enumerable Examples and Code Snippets
Lines of Code : 31
License : No License
Copyfunction collectNonEnumProps(obj, keys) {
var nonEnumIdx = nonEnumerableProps.length;
var constructor = obj.constructor;
// 获取对象的原型
// 如果 obj 的 constructor 被重写
// 则 proto 变量为 Object.prototype
// 如果没有被重写
// function hasNonConfigurable (obj, k)
{
var prop = Object.getOwnPropertyDescriptor(obj, k);
if (!prop)
{
return false;
}
if (prop.value && typeof prop.value === 'object')
{
prop = prop.value;
}
function collectNonEnumProps(obj, keys) {
var nonEnumIdx = nonEnumerableProps.length;
var constructor = obj.constructor;
var proto = (_.isFunction(constructor) && constructor.prototype) || ObjProto;
// Constructor is a specia Community Discussions
Trending Discussions on enumerable
QUESTION
Hope someone can shine a light on this, really annoying.
I'm trying to find all the links in a MarkdownDocument using Markdig in Powershell 7.1.3
It's designed for .NET and it has a set of inherited classes that it uses to represent various types of markdown documents. I'm using a simple helper PS wrapper that helps using a generic method, but I don't think this is a cause.
Let me show you with a simple repro
...ANSWER
Answered 2022-Mar-15 at 22:57Markdig.Syntax.Inlines.LinkInline itself implements IEnumerable, which cause Format-List to enumerate it and report the properties of the enumerated elements, even when passed via -InputObject.
Specifically, it enumerates the instance's one child element, which is of type Markdig.Syntax.Inlines.LiteralInline, and its properties are being displayed.
To prevent this enumeration, i.e. to see the properties of the instance itself, you must wrap it in an aux. single-element array:
QUESTION
Sorry for this awkward example, but I want to keep it as to the point as possible
Lets say, I have parsed a json-file, which gives me the hierarchy below
...ANSWER
Answered 2022-Feb-23 at 08:26You can add brackets:
QUESTION
I'm attempting to scaffold the Identity pages for a new .NET 6.0 project (created from the ASP.NET Core MVC template). When I run the following command I get the error "path is empty" (I also included the build command output to show the project builds successfully).
...ANSWER
Answered 2022-Jan-20 at 15:49As mentioned by the comment on the question and on this site
https://github.com/dotnet/Scaffolding/issues/1713
Removing the nuget package Microsoft.AspNetCore.Identity from all projects in the relevant solution solves the problem.
In many cases (also in mine) its enough to reference the nuget package Microsoft.AspNetCore.Identity.EntityFrameworkCore
QUESTION
Recently I upgraded one of my projects to use .NET 6. Earlier I was using MoreLinq library to use DistinctBy() to apply it on the specific property.
Now as I upgraded TargetFramework to .NET 6, this change come up with inbuilt support to DistinctBy().
Now the compiler is confused about which DistinctBy() needs to select, I can't rely on System.Linq, because the removal of using MoreLinq will cause multiple other errors.
I know if we face ambiguity between the same methods then we can use using alias, but I am not sure how to use using alias for Linq extension methods.
Here is the error:
I am able to replicate the same issue in the below fiddle
...ANSWER
Answered 2021-Nov-10 at 17:46You can't alias an extension method, but you can call the extension like a normal method, using the full namespace. After all, extension methods are really just syntactic sugar. For example (using the same data you provided in your fiddle):
QUESTION
Using an existing .NET 5 MVC Web App, I attempted to upgrade to .NET 6, but encountered this error. I am also using IIS for Windows Authentication--now setup in .NET 6 as "profiles" under Properties -> Debug -> hyperlink (Open debug launch profiles UI). I also included the newer "Microsoft.AspNetCore.Authentication.Negotiate" Nuget package (and associated code) to handle the newer Windows Authentication library.
When the web app launches, I get the following error:
An unhandled exception occurred while processing the request.
InvalidOperationException: Cannot find compilation library location for package 'System.Security.Cryptography.Pkcs'
Microsoft.Extensions.DependencyModel.CompilationLibrary.ResolveReferencePaths(ICompilationAssemblyResolver resolver, List assemblies) Microsoft.Extensions.DependencyModel.CompilationLibrary.ResolveReferencePaths() Microsoft.AspNetCore.Mvc.ApplicationParts.AssemblyPartExtensions+<>c.b__0_0(CompilationLibrary library) System.Linq.Enumerable+SelectManySingleSelectorIterator.MoveNext()
...
Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)
This does NOT go away if I add the package listed: System.Security.Cryptography.Pkcs
...ANSWER
Answered 2022-Jan-05 at 21:36I needed to remove at least 1 Nuget package:
- Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation -- I removed this one second, but it started working after I did.
- Microsoft.Extensions.Hosting -- I removed this one first, but this alone did not fix it. I don't know if this "also" needed to be removed. I assume not, but I'm including, just in case. Removing it did not hurt anything.
Edit: As a WARNING, this will lose the abilities given by Razor.RuntimeCompilation. However, there appears to be a code incompatibility with, I believe, IIS and Razor in .NET 6.
QUESTION
I'm converting an object based on reflection like this.
...ANSWER
Answered 2022-Jan-01 at 18:01I can't think of a solution that's significantly different to yours, fundamentally it feels like it's a custom logic to determine whether a property value is "empty" or not.
Perhaps a pattern matched switch expression might make the code a little cleaner, however, for example:
QUESTION
The following code does not throw, even though the enumerated collection is modified during enumeration.
...ANSWER
Answered 2021-Nov-29 at 08:55By design.
Citing from the docs.
The returned enumerator does not extend the lifetime of any object pairs in the table, other than the current one. It does not return entries that have already been collected or that were added after the enumerator was retrieved. Additionally, it may not return all entries that were present when the enumerator was retrieved, for example, entries that were collected or removed after the enumerator was retrieved but before they were enumerated.
The object that is being pointed to by the enumerator's Current property will not get garbage collected and can be safely accessed. If a key further in the enumerable gets GCed or removed, the enumerator will simply not access that element.
As mentioned by canton7 in the comments, this is required for the ConditionalWeakTable to remain thread-safe - other threads might be removing elements during another thread's enumeration.
QUESTION
I would like to get ALL elements in enumerable whose property is the maximum :
...ANSWER
Answered 2021-Nov-06 at 18:51Using Max is a simple plain way of doing this:
QUESTION
I'm solving the problem
here is the solution i made first
...ANSWER
Answered 2021-Aug-29 at 12:41If you can live with doing that without a class, but a normal function instead, this should work:
QUESTION
I am brand new to Haskell and am working on a practice Collatz conjecture problem. The required output is the number of steps needed to get to 1 from a given integer. This is the first time I've had to use the Maybe type, which may be contributing to my confusion.
I have this working solution based on another solution I found to the same problem:
...ANSWER
Answered 2021-Aug-21 at 14:05If you just start learning Haskell, using . and $ needlessly present an additional cognitive load for you. What you have is simpler written as
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