tharp | An inverse kinematics solver robots | Robotics library
kandi X-RAY | tharp Summary
kandi X-RAY | tharp Summary
Tharp is an inverse kinematics solver and robot manager designed to work with Johnny-Five. It makes the hard things easy. Check out this video highlighting Tharp's performance.
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QUESTION
I am trying to make a simple task manager app and I want to implement react memo in TaskRow (task item) but when I click the checkbox to finish the task, the component properties are the same and I cannot compare them and all tasks are re-rendered again, any suggestions? Thanks
Sand Box: https://codesandbox.io/s/interesting-tharp-ziwe3?file=/src/components/Tasks/Tasks.jsx
Tasks Component
...ANSWER
Answered 2020-Dec-12 at 23:33I'm afraid there are quite a lot of problems with the code you've shared, only some of them due to React.memo
. I'll start there and work through the ones I've spotted.
You've provided an equality testing function to memo
, but you are not using it to test anything. The default behaviour, which requires no testing function, will shallowly compare props between the previous and the next render. This means it will pick up on differences between primitive values (e.g. string, number, boolean) and references to objects (e.g. literals, arrays, functions), but it will not automatically deeply compare those objects.
Remember, memo
will only allow rerenders when the equality testing function returns false. You've provided no return value to the testing function, meaning it returns undefined
, which is falsy. I've provided a simple testing function for an object literal with primitive values which will do the job needed here. If you have more complex objects to pass in the future, I suggest using a comprehensive deep equality checker like the one provided by the lodash library, or, even better, do not pass objects at all if you can help it and instead try to stick to primitive values.
QUESTION
for some reason the program is crash every time there is a value in the devicesKeys array: "Checkbox defines an invalid contextType" and also "Uncaught TypeError: Cannot read property 'indexOf' of undefined"
note: In my tests I made sure that "devicesKeys" array is never in an undefined state. it seems like a react context problem, but I don't know how to solve it.
this is the code: https://codesandbox.io/s/youthful-tharp-bmdw4?file=/src/App.js
The original Docs: https://ant.design/components/checkbox/#components-checkbox-demo-check-all
...ANSWER
Answered 2020-Oct-01 at 03:56I am not sure why would you want to use CheckBoxGroup
, you can achieve it by using rowSelection
property on table:
QUESTION
I am new to ReactJS I want to read the excel file and show data in the react project. To accomplish this I can successfully read data from excel file. Now, the problem is I was unable to display data on the react project. I've search this issue and find that array values are not defined like that...
...Help me to display the data in the React project.
ANSWER
Answered 2020-Sep-17 at 15:20Ok, I've tried it and got that error in the console
Here's what you need to do
- Move the key to the Accordion, (the component being mapped)
- Make sure your excel sheet headers match the key names you're using below
The key needs to be the component right inside of the map.
Also, the name Sheet1 should be the name of your sheet
QUESTION
I am curious about when I should use Grid item
in order to take advantage of the Grid container
props such as justify
or alignItems
. I was under the impression that these attributes can be only applied to the Grid item
inside the Grid container
. However, it does not seem so from my example (see: "option two).
For example, let's consider this simple scenario: I want a way to display three Typography text, one next the other with some space in between.
Option one: https://codesandbox.io/s/naughty-tharp-0tof1
...ANSWER
Answered 2020-Aug-25 at 10:22Ciao, the Grid
css will be applied to all Grid's children (independently if children are Grid item
or Typography
).
To explain better what I'm saying lets inspect your codesandbox examples:
Option one:
Option two:
In both cases, the div father (MuiGrid-root
) will apllies his style to children.
QUESTION
I make a simple demo of counter where I have two button increment
and decrement
.demo is working fine . but now I want to test my component. my test case fail when I click on increment button
.I am using enzyme
and jest
.
here is my code https://codesandbox.io/s/quirky-tharp-ty92o?file=/src/App.test.js
test case fail
...ANSWER
Answered 2020-Jul-25 at 04:51You can't manipulate the internal state of a functional component, especially not with class-based this.setState
.
0
is the initial default state of the counter, so you should simply test that clicking the "+" button updates the UI to 1
.
QUESTION
I was wondering if anyone has had success linking against Tensorflow 2.3 DLL on Windows. I am trying to integrate some tensorflow functionality in a tiny VS2019 test project to see if I can use tensorflow C++ API at all.
- I managed to build tensorflow with MSVC 14.16.27023 and followed the instructions given in the official links:
- I built .dll and .lib using the following Bazel commands:
bazel build --config=opt //tensorflow:tensorflow.dll
bazel build --config=opt //tensorflow:tensorflow.lib
- VS2019 project properties:
- add relevant
Additional Include Directories
- add
Additional Library Directories
, which is onlypath-to-tensorflow-source\bazel-bin\tensorflow
, wherebazel-bin
directory is generated by the build system (ie Bazel) - in
Linker->Input->Additional Dependencies
add generatedtensorflow.lib
- add relevant
The source code is tiny and is comprised of a few lines I looked up in Joe Antognini's example:
...ANSWER
Answered 2020-Jul-17 at 14:55The folder containing dynamic library tensorflow_cc.dll and import library tensorflow_cc.dll.if.lib has also two files:
- tensorflow_filtered_def_file.def : contains import symbols
- tensorflow_cc.dll-2.params : has all built libraries
now if you have some unresolved symbols when building your app, all you have to do is to rebuild dynamic-library with updated tensorflow_filtered_def_file.def file. To this file you have to add missing symbols, for your sample code, it is:
QUESTION
I am facing an issue while passing the state to the child component, so basically I am getting customer info from child1(Home)
and saving in the parent state(App)
and it works fine.
And then I am passing the updated state(basketItems)
to child2(Basket)
. But when I click on the Basket button the basket page doesn't show any info in console.log(basketItems)
inside the basket page and the chrome browser(console) looks refreshed too.
Any suggestion why it is happening and how can I optimize to pass the data to child2(basket)
from main (APP).
update:2 i have tired to simulated the code issue in sand box with the link below, really appreciate for any advise about my code in codesandbox (to make it better) as this is the first time i have used it
Update:1 i have made a small clip on youtube just to understand the issue i am facing basketItems goes back to initial state
...ANSWER
Answered 2020-Jul-15 at 13:28Your function works fine, the reason your output in addbasketItem does not change is the when using setState it takes some time to apply the changes and if you use code below you can see the result.
QUESTION
My code
...ANSWER
Answered 2020-Jun-13 at 00:50You want to remove the last item from the array, and assign that to the state. My preference would be to use slice
QUESTION
I had a specific question about turning my data into two columns so I can make an edgelist. I've attached a screenshot of the data. There's up to V10, and each row represents artists that have worked on the same song. I wanted to create an edgelist with the artist names. For example, for rows that have person A, B, C, D, I wanted to create:
A B
A C
A D
B C
B D
C D
The code I used so far is:
reltest <- t(do.call(cbind, lapply(cleanartists[sapply(cleanartists, length) >= 2], combn, 2)))
But this gives me all possible combinations among the artist names, not just the ones that have existing relationships. This is what my data looks like:
...ANSWER
Answered 2020-Jun-11 at 19:36You can use apply
to apply your function to every row, and then only take the elements that are not NA
. And with the approach from here you can get rid of duplicates.
QUESTION
I have a problem with TypeScript generics. I wrote simple useMergeableState React hook that updates state by merge. I wanted not to be possible to add new keys, so newState parameter is Partial of T.
...ANSWER
Answered 2020-Feb-26 at 12:59Spotted the issue. It is located in Return
type, its different then what your really return. Consider what is there and what should be:
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