life | definite Conway 's Game of Life implementation | Game Engine library
kandi X-RAY | life Summary
kandi X-RAY | life Summary
The definite Conway’s Game of Life implementation in your browser. Features an infinite field & Hashlife. All modern browsers are supported. I don’t test IE, but it might work starting at version 9 or 10. The whole thing is written in Javascript, using the canvas tag.
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Top functions reviewed by kandi - BETA
- Init UI element
- Initialize a new linestyle .
- Parse rr string
- Load macros from text .
- Parses a comment string from a comment string
- setup pattern
- Represents a dead time .
- show a pattern
- Main execution loop
- Attempts to load the meta data from the google pixel data .
life Key Features
life Examples and Code Snippets
Community Discussions
Trending Discussions on life
QUESTION
Apparently throwError(error)
is now deprecated. The IntelliSense of VS Code suggests throwError(() => new Error('error')
. new Error(...)
accepts only strings. What's the correct way to replace it without breaking my HttpErrorHandlerService
?
ANSWER
Answered 2021-Aug-04 at 19:08Instead of this:
QUESTION
I have an odd problem, where I am struggling to understand the nature of "static context" in Java, despite the numerous SO questions regarding the topic.
TL;DR:
I have a design flaw, where ...
This works:
...ANSWER
Answered 2022-Jan-26 at 17:11One way to solve the issue is by parameterizing the ParentDTO Class with its own children.
QUESTION
(Note! This question particularly covers the state of C++14, before the introduction of inline variables in C++17)
TLDR; Question- What constitutes odr-use of a constexpr variable used in the definition of an inline function, such that multiple definitions of the function violates [basic.def.odr]/6?
(... likely [basic.def.odr]/3; but could this silently introduce UB in a program as soon as, say, the address of such a constexpr variable is taken in the context of the inline function's definition?)
TLDR example: does a program where doMath()
defined as follows:
ANSWER
Answered 2021-Sep-08 at 16:34In the OP's example with std::max
, an ODR violation does indeed occur, and the program is ill-formed NDR. To avoid this issue, you might consider one of the following fixes:
- give the
doMath
function internal linkage, or - move the declaration of
kTwo
insidedoMath
A variable that is used by an expression is considered to be odr-used unless there is a certain kind of simple proof that the reference to the variable can be replaced by the compile-time constant value of the variable without changing the result of the expression. If such a simple proof exists, then the standard requires the compiler perform such a replacement; consequently the variable is not odr-used (in particular, it does not require a definition, and the issue described by the OP would be avoided because none of the translation units in which doMath
is defined would actually reference a definition of kTwo
). If the expression is too complicated, however, then all bets are off. The compiler might still replace the variable with its value, in which case the program may work as you expect; or the program may exhibit bugs or crash. That's the reality with IFNDR programs.
The case where the variable is immediately passed by reference to a function, with the reference binding directly, is one common case where the variable is used in a way that is too complicated and the compiler is not required to determine whether or not it may be replaced by its compile-time constant value. This is because doing so would necessarily require inspecting the definition of the function (such as std::max
in this example).
You can "help" the compiler by writing int(kTwo)
and using that as the argument to std::max
as opposed to kTwo
itself; this prevents an odr-use since the lvalue-to-rvalue conversion is now immediately applied prior to calling the function. I don't think this is a great solution (I recommend one of the two solutions that I previously mentioned) but it has its uses (GoogleTest uses this in order to avoid introducing odr-uses in statements like EXPECT_EQ(2, kTwo)
).
If you want to know more about how to understand the precise definition of odr-use, involving "potential results of an expression e...", that would be best addressed with a separate question.
QUESTION
I am trying to add Simplebar scrollbar to the MUI Material Autocomplete component, instead of the default browser one. All works but doing that I've lost the ability to navigate the options list with the keyboard.
There is this snippet from the MUI docs
ListboxComponent If you provide a custom ListboxComponent prop, you need to make sure that the intended scroll container has the role attribute set to listbox. This ensures the correct behavior of the scroll, for example when using the keyboard to navigate.
But I have no idea how to do that.
The following code is from the MUI docs, first autocomplete example with custom ListboxComponenet and shortened movie list. (https://mui.com/components/autocomplete/)
...ANSWER
Answered 2021-Dec-30 at 20:06The problem is actually very complicated. Looking at its implementation, doesn't pass either the React
ref
or the role
prop to the correct element. The correct element I believe is .scrollbar-content
, which is very deeply nested and basically untouchable.
ETA: In case you thought of getting cheesy with document.querySelectorAll
setAttribute
shenanigans, that will not work. The ref
also needs to point at the correct element, and I don't think that's codeable on the workspace side.
The cleanest solution I can think of is to use Yarn 3 (👍) and patch simplebar-react
yourself, passing the needed props to .scrollbar-content
. Then you do:
QUESTION
Please consider the following program:
...ANSWER
Answered 2021-Dec-28 at 13:16Implicit implementations tend to be more common and more convenient for usage. They are less verbose and any usage of the concrete type will have the implementations of the members exposed. Implicit implementations don't include the name of the interface being implemented before the member name, so the compiler infers this. The members will be exposed as public and will be accessible when the object is cast as the concrete type.
Visit this link for more details https://www.pluralsight.com/guides/distinguish-explicit-and-implicit-interface-implementation-csharp
QUESTION
I figured out how to process a list of heterogeneous types constrained by a single class:
...ANSWER
Answered 2021-Dec-16 at 21:52With enough language features, it's possible to make a constraint that combines constraints:
QUESTION
Basic.life/8 tells us that we can use the storage occupied by an object to create a new one after its lifetime has ended and use its original name to refer to it unless:
- the type of the original object is not const-qualified, and, if a class type, does not contain any non-static data member whose type is const-qualified or a reference type, and [...]
emphasis mine
But, just below that we can see a note saying that:
- If these conditions are not met, a pointer to the new object can be obtained from a pointer that represents the address of its storage by calling
std::launder
This explains the purposes of std::launder
. We can have a class type that has const
members and use placement-new to create a new object there with different internal values.
What surprises me is the first part of the first quote. It clearly indicates that if the storage is const
(not necessarily contains const
members, but the whole object is declared as const
), we cannot use it to refer to a new object as is, but it may imply that std::launder
may fix it.
But how would we create such object? The simplest example fails:
...ANSWER
Answered 2021-Sep-21 at 23:24A const object can have non const pointers to its location.
QUESTION
I have a list of possible choices: [[1], [2, 4], [4], [5, 6, 2], [5, 3]]
.
I want to list all combinations, taking maximum one element from each sublist, without repeating elements.
So [1, 2, 4, 5, 3]
is a valid option. But [1, 4, 4, 5, 3]
is not. I allow not making a choice in any sublist, so [1,4, None,5,3]
is valid, as in [1, None, None, None, None]
, and [None, None, None, None, None]
.
I can't simply enumerate all combinations then filter out the ones I don't want, since for a large list of possible choices, it would quickly become computationally infeasible (I'm looking at 25^25 maximum combinations in my project).
edit: I would also apply some additional criteria to the results, such as filtering to have no more than a threshold of None
choices, or sorting the resultant list of combinations in order of combinations with fewest None
choices.
edit: with details of the real-life case: I'd like to apply it to a list of 25 sublists, each of which can have 1-25 elements. Realisitically, each sublist will have max 15 elements, with 2-4 on average.
So the easy solution of list(itertools.product(*choices))
then filtering is out.
I may also wish to add other filter conditions to the list of combinations, so ideally I can filter these upfront.
I've tried building a tree recursively, where e.g. root node has the full list of choices, child node makes the first choice [1], and has an updated list of choices where '1' is removed from all list[1:] choices.
Struggling to implement the recursion though.
Can you help me with any other approaches?
...ANSWER
Answered 2021-Sep-14 at 21:00Don't turn the result into a list. product
is a generator. Use that to your advantage. filter
is a generator too. You only hold one combination in memory this way. Sometimes a single output of product
will be discarded internally without you seeing it, but it won't take up any extra space.
QUESTION
Can we render a Blazor component as an independent DOM fragment, or somehow else consume it as a standard Web Component within a vanilla HTML/JS page?
This might be a naive question from the Blazor architectural standpoints. I am not a Blazor expert by far, but I think it can be a useful technique for incremental "brownfield" modernization of legacy web applications. I'm surprised this doesn't appear to be officially supported.
To illustrate, consider this simple web component example, which renders a custom element :
ANSWER
Answered 2021-Aug-23 at 15:45MS has addressed this limitation, but the solution requires .Net 6.
https://github.com/aspnet/AspLabs/tree/main/src/BlazorCustomElements
This was done by the man himself, Steve Sanderson.
QUESTION
Suppose you have an OTP process whose completion you want to synchronously wait on (where "completion" may be a normal exit or a crash, stop, etc.).
Suppose further that for business reasons, you can't spawn this process with Task.async/1
or related Task
utilities—it has to be a "normal" process not dependent on Task.await/2
.
Is there a better way to do this than simply intermittently polling Process.alive?/1
? This strikes me as the sort of thing there's probably an established pattern for, but for the life of me I can't find it.
ANSWER
Answered 2021-Jul-15 at 16:39It looks like Process.monitor/1
might be what you're looking for? Example from the docs:
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