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kandi X-RAY | readability Summary
kandi X-RAY | readability Summary
Golang版本是根据readabiliity for node.js以及readability for python所改写，并加入了些自己的，比如支持gzip等。.
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Top functions reviewed by kandi - BETA
- Grab the article
- httpGet sends a GET request to the given URL
- NewReadability returns a new TReadability object
- HashStr returns md5 hash of the node
- strLen returns the length of str .
readability Key Features
readability Examples and Code Snippets
Community Discussions
Trending Discussions on readability
QUESTION
I'm getting some very weird behavior from mixing tidyverse and data.table syntax.
For context, I often find myself using tidyverse syntax, and then adding a pipe back to data.table when I need speed vs. when I need code readability. I know Hadley's working on a new package that uses tidyverse syntax with data.table speed, but from what I see, it's still in it's nascent phases, so I haven't been using it.
Anyone care to explain what's going on here? This is very scary for me, as I've probably done these thousands of times without thinking.
...ANSWER
Answered 2021-Jun-15 at 06:35I came across the same problem on a few occasions, which led me to avoid mixing dplyr with data.table syntax, as I didn't take the time to find out the reason. So thanks for providing a MRE.
Looks like dplyr::arrange is interfering with data.table auto-indexing :
- index will be used when subsetting dataset with
==or%in%on a single variable- by default if index for a variable is not present on filtering, it is automatically created and used
- indexes are lost if you change the order of data
- you can check if you are using index with
options(datatable.verbose=TRUE)
If we explicitely set auto-indexing :
QUESTION
I have been facing a problem recently regarding JSONB data type in my Postgresql DB.
I have a rather complex structure of my column (let's say the table is called RATING and the column name FOOD_VALUE - making it up) which goes, for example, as follows:
...ANSWER
Answered 2021-Jun-15 at 06:29create type t_json_val as (path text[], val jsonb);
create or replace function jsonb_mset(a jsonb, variadic b t_json_val[])
returns jsonb
immutable
language plpgsql
as $$
-- Set multiple jsonb values at once
declare
bb t_json_val;
begin
foreach bb in array b loop
a := jsonb_set(a, bb.path, bb.val);
end loop;
return a;
end $$;
QUESTION
I'm not sure if the question was clear enough so I'll show the code and what's actually going on. Exerpts of the code's relevant parts are as follows:
...ANSWER
Answered 2021-Jun-14 at 20:25Nothing weird is going on with the posted code...
The easiest explanation is probably that UpdateValue() is being called after MyObject's Value is set.
I suggest you try setting some breakpoints in UpdateValue() and MyObject.Value to see which one is called last...
QUESTION
If have the following code which simulates a ball to Ball collision. My problem is, that the balls bounce against each other. I want to have the balls stick together like snow particles. Does anyone know how to do that?
...ANSWER
Answered 2021-Jun-11 at 12:47void resolveCollision(Particle& particle, Particle& otherParticle) {
float xVelocityDiff = particle.speed.x - otherParticle.speed.x;
float yVelocityDiff = particle.speed.y - otherParticle.speed.y;
float xDist = otherParticle.pos.x - particle.pos.x;
float yDist = otherParticle.pos.y - particle.pos.y;
// Prevent accidental overlap of particles
if (xVelocityDiff * xDist + yVelocityDiff * yDist >= 0) {
// Grab angle between the two colliding particles
float angle = -std::atan2(otherParticle.pos.y - particle.pos.y, otherParticle.pos.x - particle.pos.x);
// Store mass in var for better readability in collision equation
float m1 = particle.mass;
float m2 = otherParticle.mass;
// Velocity before equation
glm::vec3 u1 = rotateVel(particle.speed, angle);
glm::vec3 u2 = rotateVel(otherParticle.speed, angle);
// Velocity after 1d collision equation
glm::vec3 v1(u1.x * (m1 - m2) / (m1 + m2) + u2.x * 2 * m2 / (m1 + m2),
u1.y,
0.0);
glm::vec3 v2(u2.x * (m1 - m2) / (m1 + m2) + u1.x * 2 * m2 / (m1 + m2),
u2.y,
0.0);
// Final velocity after rotating axis back to original location
glm::vec3 vFinal1 = rotateVel(v1, -angle);
glm::vec3 vFinal2 = rotateVel(v2, -angle);
// Swap particle velocities for realistic bounce effect
particle.speed.x = vFinal1.x;
particle.speed.y = vFinal1.y;
otherParticle.speed.x = vFinal1.x;
otherParticle.speed.y = vFinal1.y;
}
}
QUESTION
In just starting to use JMeter I am trying to set variables of the form taskId_1, taskId_2, taskId_3 (defined in "User Defined Variables") and use them in HTTP Samples (REST requests). When I run postprocessors none of my JSON Extractors or Regular Expression Extractors save the values matched (and I tested the extracted regular expression using RegExp tester.)
The response sent from the GET request that I am parsing looks like (edited for readability):
...ANSWER
Answered 2021-Jun-10 at 18:00QUESTION
I recently made a pull request at my company and got feedback on some code that I had written and I wanted some other opinions on this.
We have an component called Icon that can take another component as a prop like so:
this simply renders the following:
...ANSWER
Answered 2021-Jun-10 at 09:45Arrow functions are anonymous and will be re-instantiated on every render.
If you create a named component, it will have a reference and will not be re-rendered by React unless and until required (through state update).
And also, as you mentioned, it provides better readability and an option for code splitting.
QUESTION
I have a
...ANSWER
Answered 2021-Jun-10 at 03:55You can define CatType as a wrapper class instead of a typedef, and define a converting constructor from int:
QUESTION
Description of the problem
I'm trying to display different tasks from my context. Every time I submit my form, I want a new Task to appear under the other, instead of that after form submission the old task just gets replaced by the new one. I'm sure it's a mediocre problem, but this is my first react project. Also, I'm using styled components so I'm leaving the css out of the code blocks for readability.
...Context
ANSWER
Answered 2021-Jun-10 at 01:03You just put a new task object into task array, that's why all old tasks will disappear. The solutions is you spread out the old tasks first, then add new task after that.
in submitHandler
replace task.setTasks([{ text, time, reminder }]);
with task.setTasks([...task.tasks, { text, time, reminder }]);
QUESTION
Why does Python not allow a comment after a line continuation "\" character, is it a technical or stylistic requirement?
According to the docs (2.1.5):
A line ending in a backslash cannot carry a comment.
and (2.1.3):
A comment signifies the end of the logical line unless the implicit line joining rules are invoked. Comments are ignored by the syntax.
PEP 8 does discourage inline comments so I can see how this may stylistically be "unpythonic." I could also see how the "\" could be ambiguous if it allowed comments (should the interpreter ignore all subsequent tokens or just comments?) but I think a distinction could easily be made.
Coming from Javascript and accustomed to the fluid interface style, I prefer writing chains like the following instead of reassignment:
...ANSWER
Answered 2021-Jun-09 at 21:48For the same reason you can't have whitespace after the backslash. It simplifies the parsing, as it can simply remove any backslash-newline pairs before doing any more parsing. If there were spaces or comments after the backslash, there's no backslash-newline sequence to remove.
QUESTION
I am having problem with select() call on an multi-socket app.
Here is how it is supposed to work.
Writer writes: [0010]HelloWorld on a socket, where the the first 4 character are always digits representing the payload size.
Reader should do the following:
- call
select()to verify if a given socket is readable, thenreadfirst 4 character, change char to digit to get size of buffer in number, and allocate a buffer of that size. - copy characters (after the first 4 characters) from the socket and paste to the buffer for further processing
read4 characters again, which should fail and upon failure to read any data, the app should clean exit the program.
Problem is in the 3rd select call. select followed by read iteration, every time we check select() for readability of socket and once that is verified, we proceed with the read. While the socket is valid and almost whole process works just fine, except for last point at step 3 before read is expected to fail, I call select() system call for last time, and it completely freezes the thread upon calling select .
I am not finding any sources online which can explain this weird phenomenon. To verify that the thread is not returning I have created a dummy object just before making the system call select() and logged it on destruction. Unformtunately, the distructor is never getting called.
Source code is propriotery, cannot be shared.
snippet:
...ANSWER
Answered 2021-May-25 at 00:12You are passing the wrong timeout parameter to your second call to select, which is therefore blocking.
From the documentation:
If both fields of the
timevalstructure are zero,then select()returns immediately. (This is useful for polling.)
If
timeoutis specified asNULL,select()blocks indefinitely waiting for a file descriptor to become ready.
So pass the address of a zeroed timeval struct, rather than 0, and you should be OK.
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