BoDi | A very small , embeddable IoC container
kandi X-RAY | BoDi Summary
kandi X-RAY | BoDi Summary
A very small, embeddable IoC container (for SpecFlow)
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QUESTION
I am trying to find a relatively generic way to type POST bodies and the responses I get back in conjunction with their API routes (in a nextjs app).
For this I want the compiler to force me to add a body
type and a return
type to all the API routes, which I achieved with the following interface:
ANSWER
Answered 2022-Apr-12 at 02:01See microsoft/TypeScript#48269 for an authoritative answer to this question.
Numeric keys have always been allowed for string index signatures, because non-symbol
keys in JavaScript are always coerced to strings first. So the "number
" keys should really be more like "numeric strings", but TypeScript allows you to think of them as numbers to support indexing into arrays with numbers.
Prior to TypeScript 2.9, keyof {[k: string]: any}
would have just been string
. But TypeScript 2.9 introduced support for number
and symbol
properties with keyof
. Part of this change is that keyof X
where X
has a string index signature now includes number
. So keyof {[k: string]: any}
is string | number
. This is working as intended.
But for mapped types like Record
, the compiler does not immediately augment the keys this way. Apparently it is important that Record
be properly contravariant in K
(according to the comment in ms/TS#48269 anyway).
But Record
is, after all, equivalent to {[k: string]: any}
, and therefore we have an inconsistency. TypeScript doesn't take consistency as its most important design goal; indeed, it is a non-goal of TypeScript to have a provably correct type system. Productivity is, in some sense, more important than correctness. If fixing an inconsistency would make TypeScript very annoying to use for a lot of people, then it's better to leave the inconsistency. And this is apparently one of those situations; according to the same comment, the inconsistency here can't be eliminated (presumably without destroying some oft-used part of the language, such as numeric keys for arrays), so it stays.
Oh well!
QUESTION
I'm trying to use Matter.Query.region
to see if the character in my game is grounded. But, when I try to run region
with a bounds object that I created (displayed with the dots shown in the game), it doesn't come up with any collisions even though it is clearly intersecting other bodies.
Code:
...ANSWER
Answered 2022-Mar-24 at 00:20The bounds object doesn't appear to be properly created. The purple p5 vertices you're rendering may be giving you a false sense of confidence, since those aren't necessarily related to what MJS sees.
It's actually a pretty simple fix, passing an array of vertices instead of individual arguments:
QUESTION
I've looked for an answer to this one, but I can't seem to find anything, so I'm asking here:
Do reference parameters decay into pointers where it is logically necessary?
Let me explain what I mean:
If I declare a function with a reference to an int as a parameter:
...ANSWER
Answered 2022-Mar-04 at 21:18The compiler can decide to implement references as pointers, or inlining or any other method it chooses to use. In terms of performance, it's irrelevant. The compiler can and will do whatever it wants to when it comes to optimization. The compiler can implement your reference as a pass-by-value if it wants to (and if it's valid to do so in the specific situation).
Caching the result won't help because the compiler will do that anyways.
If you want to explicitly tell the compiler that the value might change (because of another thread that has access to the same pointer), you need to use the keyword volatile (or std::atomic if you're not already using a std::mutex).
Edit: The keyword "volatile" is never required for multithreading. std::mutex is enough.
If you don't use the keyword volatile, the compiler will almost certainly cache the result for you (if appropriate).
There are, however, at least 2 actual differences in the rules between pointers and references.
- Taking the address (pointer) of a temporary value (rvalue) is undefined behavior in C++.
- References are immutable, sometimes need to be wrapped in std::ref.
Here I'll provide examples for both differences.
This code using references is valid:
QUESTION
I get the data when I use useEffect
instead of getStaticProps
. But in getStaticProps
it's showing that hooks can only be use in functional component.
ANSWER
Answered 2021-Sep-27 at 12:49At the moment, using RTK Query with Next is only possible in non-SSR-Scenarios. That will change with RTK version 1.7.
See https://github.com/reduxjs/redux-toolkit/pull/1277
You can use the rest of RTK as you want with Next.
QUESTION
I was following along a presentation of Ryan florence (creator of remix and ReactTraining.com). There he was demistifying useState hook, by making one of his own.
I followed along the procedure, and implemented this in a component.
ANSWER
Answered 2022-Feb-23 at 08:26I had to watch about 13 minutes into the video to spot the first difference between your code and that in the demo. The presenter said to immediately manually invoke the custom reRender
function to do the initial render. It's from here I noticed that you were rendering your app twice. MadeUseStateMyself
is rendered once in the custom reRender
function and is also exported and rendered again into the DOM in the index.js
file.
You've effectively two instances of your MadeUseStateMyself
component rendered as a React stomping on each other.
If you take your code and immediately invoke reRender
, and also completely remove the index.js
rendering code, while also wrapping MadeUseStateMyself
in a React.StrictMode
component, you'll see it has no issues rendering and updating.
MadeUseStateMyself
QUESTION
Suppose I have three functions foo
, bar
, baz
, all of which return nullable types.
ANSWER
Answered 2022-Feb-21 at 16:50val result = listOf(foo(), bar(), baz())
.reduce { acc, i ->
when {
acc == null || i == null -> null
else -> acc + i
}
}
QUESTION
I've been given a dll without libs. The dll comes with hpp and h files. I used dumpbin to create an exports.def file and lib to create a library.
I'm using the following CMakeLists.txt
...ANSWER
Answered 2022-Jan-31 at 03:07Assuming that you created the .lib
correctly, this is how you would set up something linkable:
QUESTION
ANSWER
Answered 2022-Jan-23 at 14:57After hours of exploring the internet i couldn't get the answer of my problem, but debugging the code i found the problem. Actually it was one extra trailing slash in URL which made it to misbehave. I was like this before.
The correct version will be.
EXTRA NOTE: All those who have not found the solution from here should move forward to this link and look for trailing slash if found in your current URL, for making successful proxy you need to eliminate that trailing slash at the end of URL.
QUESTION
I have the following test file in my code:
...ANSWER
Answered 2022-Jan-21 at 14:43For anyone facing the same issue as me, I found the solution by changing my dictionary declaration as below:
QUESTION
I've made a Select Query with multiple Tables using Joins. In the database, I have some data that have the same id but 1 or 2 columns have different values. When I run the query I get (for example) 2 objects that have the same data( for the first 3 columns) except a single column that has a different value. Now in the database, I have multiple of these, so I would get 10-20 objects and some of them are "duplicates" with the only difference being one of these columns. Is it possible to make a query that brings me this data without the "duplicates". So the columns that have the same value be the same but the column that the data is different be in an array (so have all 'different' data in the same place).
Example:
...ANSWER
Answered 2022-Jan-12 at 14:33You cannot do it in plain SQL as it will always return data in rows. What you probably want is to use some kind of ORM (for example https://sequelize.org/).
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