Donatello | Pure-CSS drawing library for the browser
kandi X-RAY | Donatello Summary
kandi X-RAY | Donatello Summary
Pure-CSS drawing library for the browser.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of Donatello
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Donatello Examples and Code Snippets
Community Discussions
Trending Discussions on Donatello
QUESTION
I am trying to paginate a table while grouping the rows by a column.
I want to retrieve all correlated rows in the top ten unique groups.
ex. I have a column with countries. I want to select all rows related to the first ten unique countries. I am currently using GROUP BY, ORDER BY, and LIMIT to try to do it.
My current workaround is to grab the ten country names with one select statement, then run a second query to get all rows with those values, but there has to be a better way...
edit 1: example data and request
edit 2: reformatted data as a create table and insert statement to allow for easy reproduction as per suggestion in comment.
ANSWER
Answered 2020-Sep-18 at 07:17You could create a temporary table with a selection (e.g. first 2 in alphabet) and left self join it.
QUESTION
I am stuck with a problem:
I have a table with many rows and columns like this (just more rows and columns):
Pizza consumption:
df =
...ANSWER
Answered 2020-Jul-27 at 19:16Just use pd.DataFrame.groupby.sum
without the parameter axis=0
(row-wise):
QUESTION
question part
...ANSWER
Answered 2020-Jun-28 at 17:45You are creating another newScore
variable in the loop because var
and let
both create a new variable. So the original never gets updated. Change var newScore = newScore + a[i].value;
to newScore = newScore + a[i].value;
or use shorthand increment newScore += a[i].value;
QUESTION
So let's say we have three lists.
...ANSWER
Answered 2020-Jun-24 at 05:28You can use double sapply
:
QUESTION
I'm creating Rest API with Django Rest Framework for my clients and I'm confused while creating a structure of it. I want a structure like this with DRF Serializers
:
ANSWER
Answered 2020-Jan-28 at 05:29Try returning a list in your serializer:
QUESTION
I am trying to build a basic single-page web shop (images of the products, onclick = "addtocart()"
and a button "Buy" onclick="buyprem()"
.
On buy, the JSON is sent to my Java Application via a Websocket.
After buying, I want to reset the JSON
representing the order. But whenever I do this, the default JSON
is sent.
ANSWER
Answered 2019-Sep-14 at 17:22better to do:
QUESTION
This is my current situation:
...ANSWER
Answered 2018-Aug-17 at 19:16i do not know the rationale for using id property over value, but if that is what you want to do, all you need to do is to update your js to read id property instead of value property.
https://codepen.io/anon/pen/XBvYoL
HTML:
QUESTION
How can I make checkbox and radio inputs disabled per fieldset and then sequentially enabled after certain inputs are selected?
For example: Initially, all fieldsets but the first one are disabled. After user selects input in the first fieldset, second one is enabled. And so on and so forth.
Related to that, how can I display the calculated value only after radio input in the second fieldset is checked?
...ANSWER
Answered 2018-Aug-17 at 04:13Create an onchange event listener on fieldset and trigger a function that would enable the next fieldset. Check out the working snippet
QUESTION
Given an arbitrary JSON input:
...ANSWER
Answered 2018-May-31 at 06:24If $paths contains an array of explicit jq paths (such as [ ["turtles", 0, "name"], ["cast"]])
, the simplest approach would be to
use the following filter:
QUESTION
Following the "PIPE WITH STRINGS" section of this tutorial: http://www.jonathanbeard.io/tutorials/CtoJava
I want to modify the StreamTest code so that I can save the data to a variable and pass it to another class.
I tried doing that (See Below) but when I run java -cp . StreamTest from the tutorial I get this:
Main method not found in class StreamTest, please define the main method as: public static void main(String[] args)
Which makes sense I guess, but I am kind of stuck on how to approach this now.
The main idea is that I want to be able to get the data from the c code, put it in the variable pass (I guess through the StreamTest code), and then pass that variable to my mainLaptop class
...ANSWER
Answered 2018-Jun-01 at 04:07You've got it all wrong ... you are running
java -cp
So this is trying to run your application, hence the error, that it cant find a Main method because Java looks for a Main method when trying to run an application...
If you want to save the data just pass the data into the command like so
java -cp . class "the string you want"
And then in the main method you have the "String args[]" read it from that :)
EDITED
@Jas Buddy what are you doing ??? how can you have two main Method ....? scrap StreamTest use only mainLaptop ....
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