Enlightened | An elegant , minimalist highlighting code editor for Android | Editor library
kandi X-RAY | Enlightened Summary
kandi X-RAY | Enlightened Summary
An elegant, minimalist highlighting code editor for Android. Enlightened gives you a rich editing experience for a number of programming languages. Soon, you will even be able to import your own custom language definitions and themes.
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QUESTION
I am trying to write a hierarchical configuration structure such that config files in the inner directories inherit from the config files in the outer directories. For example, in the following scenario
...ANSWER
Answered 2021-Jun-08 at 08:53Suppose we have the following files:
QUESTION
From my research, these were the only guarantees that I could find about these built-in integer data types:
charwill not be smaller than 8 bitsshortwill not be smaller than 16 bitsshortwill not be smaller thanchar
In practice, according to my experience, short is always double the size of char, but it does not appear that this is a guarantee made by the C language specification. It seems that a scenario such as a 16 bit char and a 16 bit short could still be valid.
This is more of a curiosity question, I realize that if you really need exact widths for your integer data types, you're better off using the stdint.h header.
UPDATE 5/6/2021: I do not believe this question is a duplicate of What platforms have something other than 8-bit char?. I am not asking about the specific size of a char, but rather the ratio between a char and a short, regardless of the actual size of either one. At least for me, many of these answers have enlightened me in a way that the "duplicate" question has not. I hope this also helps others that stumble upon it.
ANSWER
Answered 2021-May-06 at 15:12In theory, all of char, short, int could have the same size.
Very few implementations are doing that in practice (I cannot name any; I think in the previous century you might have found some)
QUESTION
Say if I want to sort a 2d array. (just reorder the rows, don't touch data within each row).
In following snippet: all 3 cases use the same Arrays.sort(T[] a, Comparator c) method signature. Case (a) works fine. However, just by adding a if condition to the second argument, the inference of T changes. I couldn't comprehend why.
ANSWER
Answered 2021-Apr-22 at 07:58Short answer: the compiler is not smart enough to infer through such complex expressions. It needs some help inferring the type:
QUESTION
Just like the title, why do we need to use ssms if visual studio (2019) already has sql server?
I am just starting to EXLPORE MORE about databases (.mdf) in c# (specifically for standalone desktop apps) and try to make them secure, as I am doing my searches I stumbled upon SSMS. I don't even know if SSMS is "necessary" since I can just create a service-based database and do the queries there. I have also deployed a desktop app to client machine with just service-based (.mdf) database (without ssms).
As you can see in this image, I'll just go to Server Explorer and then I can just do database stuff right? create tables, stored procedure, functions, etc.
I can also go to SQL Server Object Explorer to do some database stuff that ssms can do. Like logins, server roles etc.
Can someone please enlighten me about the importance of using ssms? or why do we even need it?
If I watch youtube tutorials about CRUD, most of them is using ssms, and I don't, I just add a service-based database and it just works.
Edit: Thank you for everyone who commented and even answered in my post, but I have found this helpful website that really enlightened me about the difference of ssms and vs(for sql).
Based on Grant Fritchey's Answer:
As to point four, are you developing code and databases? You may see better use in VS (source control being the biggie here). Are you managing servers and databases as well as developing code and databases? You may see better use in SSMS.
For now, I'm just going to stick with VS since it all fits my needs and I am still not managing servers like a system admin.
...ANSWER
Answered 2021-Jan-25 at 12:46Visual Studio and SSMS are separate products and have specific areas that they are good at. VS is more designed to make development easier. Yes you can definitely connect to SQL via VS but the functionalities that you can do are somewhat limited. SSMS provides a much better toolset if you will be doing some stuffs with SQL Server. This is actually something that will depend on the user, for me I use VS to do development stuffs and SSMS to do SQL stuffs. Just my 2 cents. Hope this answer could help.
QUESTION
I am writing an MPI application to speedup a math algorithm with ARM cored device. The device has a S922X CPU which integrates a quad-core ARM Cortex-A73 cpu and a two core Cortex-A53 CPU.
I am wondering, with tuning of the compiler, or selecting a different compiler, can I expect more speedup for my application?
I was playing with possible options of the mpic++ compiler like -O1, -O3, -Ofast, -ffast-math -march=native ... etc.
The final option was this: -Wall -Wextra -std=c++11 -Ofast
And the build application could run on both cores. However they have different instruction sets so I think the binary is not maximized yet for performance.
the capabilities of the two cores are describe in the datasheet
Cortex-A53 processor features
- Armv8 Architecture ARM, Thumb, and ThumbEE instruction set support
- Media Processing Engine (MPE) with NEON technology
Cortex-A73 processor features
- Armv8-A Architecture
- NEON advanced SIMD
- DSP & SIMD extensions
- VFPv4 floating point
- Supports Hardware virtualization
How can I use the powerful features of the A73 core to speedup more my application? What is the best approach?
By the way from my previous post I became enlightened I must use the BIG core if I want max performance:
...ANSWER
Answered 2021-Jan-08 at 14:31Your problem is twofold.
First, there are cores with varying instruction sets. Most MPI implementations provide an easy solution for that by allowing you to run jobs from more than one executable. You simply need to compile the code twice with core-specific optimisations in order to produce two executable files. Let's call them prog.big (optimised for the big cores) and prog.little (optimised for the LITTLE cores). Then, instead of launching 6 ranks from a generic executable with mpiexec -n 6 ./prog, you launch 4 ranks from prog.big and 2 ranks from prog.little:
QUESTION
I've been in game development for a while and since then this is the question that I couldn't find an answer to.
So, seriously how does this magic works on its very bases? For example, when I'm using Unreal Engine 4, I can simply call LineTraceByChannel, pick a start and end point, and then the engine will trace a line and return me the hit result. I can also visualize it. But my brain thinks like:
"Okay there is no such a thing as shooting a line segment, like a bullet, this is a simpler way to visualize it. There must be huge math behind it. How does it detect the intersecting actors? Does it check for every available geometry or only the ones that are in the radius of endpoint - start point? Then how does it detects that these actors are in that radius? How come it can be not 'that' much expensive?"
I would be really enlightened if someone can explain what the heck is behind the line tracing hit tests... Thank you for your time...
...ANSWER
Answered 2020-Dec-23 at 00:00Nice question. To dense to obtain a short answer of the kind "raycasting works just like this" and that's it. The big deal is how the raycasting and the collision point obtained is optimized and all the math and software tricks behind it for it to be that cheap. However, that's too deep and complex stuff to be explained in an answer I believe. That does not mean that I know the answer.
An approximate unoptimized approach can be to check with sphere-line intersection the entities of the scene. The ray is just a line, so two points. Then, once you got the entities interesected, you get the lowest z coordinate one (closest to the camera where the ray is thrown from), and for all the polygons of that entity, you check for the plane-line for all the planes of the 3d entity model. Again the big deal is how this is optimized to be so computationally cheap and be used for example in an Update()
The same question arises with collisions. In 2D it's not that easy but you can build yourself, for example, a simple collision system, to check if two polygons collide, just checking for example for all of the points of one of the polygons if any is inside the other. To optimize that regarding efficiency and/or precision convex hull and bounding volumes (box, sphere, capsule, cylinder, etc) obtention techniques are used. That goes out of control when you go to 3D.
As to explain even the stuff of the bounding volume techniques used for collision detection and optimization is too large and deep to be explained on an answer to explain collisions in game engines, something similar should be happening to explain how the raycast stuff works in detail I believe.
Anyhow I will be also glad to read any comments about how raycast works in-game engines in detail, maybe some explanation at a high level, beyond the simple model example I explained, which I don't know if it even used actually, its just a computational geometry approach to achieve the intersection point.
QUESTION
#include
int main()
{
int N, i, j, k, z, v, x, c;
printf("Determine the number of your words: \n");
scanf("%d", &N);
char dict[N][50];
char tmp[50];
for(i=0; i0))
{
v=0;
while(dict[k][v]!= '\0')
{
dict[k][v] = dict[k-1][v];
v= v+1;
}
k=k-1;
}
x=0;
while(dict[k][x]!= '\0')
{
dict[k][x]=tmp[x];
x=x+1;
}
}
for(c=0; cANSWER
Answered 2020-Dec-16 at 20:44Limited to stdio.h
If you are limited to using what is provided in stdio.h, then you simply have to write similar string handling functionality to what you would require from string.h. For sorting, unless you want to use a partitioning sort like quicksort or mergesort, you would be limited to a nested loop sort -- which are simpler to write -- but much much slower. (but for a 1000 or so strings, it doesn't matter, 100,000 - then there will be a perceivable difference)
To compare strings, you can write a simple strcmp() like function that requires no additional header, e.g.
QUESTION
In my CS class, my students just finished their first "clone your classic" contest. The PONG team went rapidly through the "Hey my paddle is frozen" issue with their two players on one keyboard version. I came across this problem 5 years ago and found Python bind - allow multiple keys to be pressed simultaniously that enlightened me (watch out ! The article uses python2.7). But I didn't realize then that the script only worked on windows machines.
On a linux system, the event triggers the callback, but the event.char then points to ' ' and not 'a' as one could expect. I tried googling the issue, but even on stackoverflow I couldn't find anything of interest.
Any hints? Next find the reproducible code sample:
...ANSWER
Answered 2020-Dec-16 at 15:04Just to close the subject, all the job has been done by Atlas435 : if you want to code a Pong with Tkinter, with two paddles listening independently to the keystrokes, follow this post Python bind - allow multiple keys to be pressed simultaniously but change e.char into e.keysym in the callbacks to get which key triggered the event Pressed or Released.
QUESTION
I have a ProcessingElement.sv module, and I would like to instantiate a configurable array of them, so I was thinking to create a generate block like so:
...ANSWER
Answered 2020-Nov-23 at 07:14What you can do is create a 2-D array of wires, and make conditional connections inside the generate loop. Here's what a complete example looks like:
QUESTION
I'm trying to find or figure out the algorithm for converting a signed 64-bit int (twos-complement, natch) to closest value IEEE double (64-bit), staying within bitwise operations.What I'm looking for is for the generic "C-like" pseudocode; I'm implementing a toy JVM on a platform that is not C and doesn't have a native int64 types, so I'm operating on 8 byte arrays (details of that are mercifully outside this scope) and that's the domain the data needs to stay in.
So: input is a big-endian string of 64 bits, signed twos-complement. Output is a big-endian string of 64 bits in IEEE double format that represents as near the original int64 value as possible. In between is some set of masks, shifts, etc! Algorithm absolutely does not need to be especially clever or optimized. I just want to be able to get to the result and ideally understand what the process is.
Having trouble tracking this down because I suspect it's an unusual need. This answer addresses a parallel question (I think) in x86 SSE, but I don't speak SSE and my attempts and translation leave me more confused than enlightened.
Would love someone to either point in the right direction for a recipe or ideally explain the bitwise math behind so I actually understand it. Thanks!
...ANSWER
Answered 2020-Nov-23 at 03:54Here's a simple (and wrong in several ways) implementation, including a test harness.
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