sparky | Because life is too short for ugly sparklines | Canvas library
kandi X-RAY | sparky Summary
kandi X-RAY | sparky Summary
Sparklines are intense, simple, word-sized graphics. Sparky is a JavaScript library for drawing them dynamically in your web browser.
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QUESTION
I want to make a hash of hash using the structure of an array. Each array element should be a subkey of the preceding array element. For example using the following arrays:
...ANSWER
Answered 2021-Jan-02 at 23:48This is sounding like an XY problem to me - I'm very suspicious that you've 3 separate, numbered arrays.
But I'll answer on the off chance you're seeing a more general case - the trick to doing this sort of thing is using a hash reference to traverse and reset.
QUESTION
I have a simple Dog class that I am trying to store information about in a dictionary. With multiple instances of the class, Im seeing that the values of the dictionary get overwritten with subsequent instances. Any idea why this is happening? Ive also included another variable that doesnt seem to change. I assume this is some attribute that has to do with Python Dictionaries. Any idea how to fix? Working on Python 3.6. Thanks in advance.
...ANSWER
Answered 2020-Nov-19 at 17:07You have created a class attribute info, which you update during each instance creation (you don't create a new one).
As this class attribute isn't used at all, and since you want each instance to have its own, separate info, just create it in __init__:
QUESTION
I couldn't get certain JSON Value using TJSONObject, i get error of Access violation at address xxxxxxxxx.
I have a problem getting the desired value using it's key name from JSON File,
i'm currently using TRESTClient, TRESTRequest, TRESTResponse to get JSON data from the web, i used same JSON URL with Javascript and works fine, but in C++ Builder it doesn't, it simply showing me an error of Access violation at address xxxxxxxxx blablabla, that happens when i try get certain JSON value using it's name like for EX: "name": "sparky", but when i get full JSON File it succeeds without errors.
Code:
...ANSWER
Answered 2019-Apr-10 at 16:00The JSON you have shown is an ARRAY OF OBJECTS rather than a SINGLE OBJECT, like your code assumes it is. So TJSONObject::ParseJSONValue() would return a TJSONArray instead of a TJSONObject, and as such there is no way that your assertion in comments that the "JSONObject is valid" can be true since dynamic_cast would fail and return NULL, which your code is not checking for. You did not show the FULL error message, but if it says "read of address 00000000", that is a good indication that a NULL pointer is being accessed.
Also, TJSONObject::Get() is deprecated. To retrieve a value by name, use TJSONObject::GetValue() instead.
Also, TRESTResponse can parse the JSON for you, if you use the TRESTResponse::JSONValue property instead of the TRESTResponse::JSONText property.
Also, you are leaking the TJSONObject that you allocate, if your code is compiled using one of the non-ARC-based C++ compilers.
With that said, try this:
QUESTION
I am using Python/matplotlib to create a figure whereby it has three subplots, each returned from a different 'source' or class method.
For example, I have a script called 'plot_spectra.py' that contains the Spectra() class with method Plot().
So, calling Spectra('filename.ext').Plot() will return a tuple, as per the code below:
...ANSWER
Answered 2020-Mar-10 at 13:19One way to do this is:
QUESTION
import java.util.*;
public void readToolData(String fileName) throws FileNotFoundException
{
File dataFile = new File(fileName);
Scanner scanner = new Scanner(dataFile);
scanner.useDelimiter(",");
while( scanner.hasNext() )
{
String toolName = scanner.next();
String itemCode = scanner.next();
int timesBorrowed = scanner.nextInt();
boolean onLoan = scanner.nextBoolean();
int cost = scanner.nextInt();
int weight = scanner.nextInt();
storeTool(new Tool(toolName, itemCode, timesBorrowed, onLoan, cost, weight));
}
scanner.close();
}
ANSWER
Answered 2020-Feb-20 at 19:00The issue here is that your lines are not ending with a comma and there are newlines.
This is what your program is interpreting the first two lines of your input as:
QUESTION
Edit: This is not the right way to use interfaces in Go. The purpose of this question is for me to understand how empty interfaces work in Go.
If all types in Go implement interface{} (empty interface), why can't I access the name field in the Cat and Dog structs? How can I get access to the name field of each struct through the function sayHi()?
ANSWER
Answered 2020-Jan-29 at 23:12An interface{} is a method set, not a field set. A type implements an interface if it's methods include the methods of that interface. Since empty interface doesn't have any methods, all types implement it.
If you need to access a field, you have to get the original type:
QUESTION
I have a data frame which I want to send it as the body of HTTP Post request, what's the best Sparky way to do it?
How can I control a number of HTTP requests?
If the number of records gets bigger is there any way to split sending data frame into multiple HTTP Post call?
let's say my data frame is like this:
...ANSWER
Answered 2018-May-02 at 18:38You can achieve this using foreachPartition method on a Dataframe. I am assuming here you want to make an Http Call for each row in the Dataframe in parallel. foreachPartition operates on each partition of the Dataframe in parallel. If you wanted to batch multiple rows together in a single HTTP post call that too is possible by changing the signature of the makeHttpCall method from Row to Iterator[Row]
QUESTION
I want the output of each of the 5 System.out.Print's to be stored in the sentence(x) variables. Additionally I want to take the last word of each sentence (excluding the punctuation) and set those into their respective variables.
...ANSWER
Answered 2019-Sep-11 at 20:49Not really sure the question, but instead of printing the sentence straight away store it as a variable then just print the variable. Then you are free to use the variables after.Think that might answer your question.
QUESTION
I'm developing an Apache Spark job to run and I plan to deploy it as one stage in an AWS Step Function. Unfortunately the particular way that I wish to deploy it isn't directly supported by Step Functions at this time; however, Step Functions has an API for a generic Task that I can make use of. Essentially, once the task is started, it needs to periodically make a call to sendTaskHeartbeat and then on completion it needs to call sendTaskSuccess.
My Spark job is written in Scala, and I'm wondering what the best approach for running something on a timer is within the context of an Apache Spark job. I see from other answers that I could make use of java.util.concurrent or perhaps java.util.Timer, but I'm not sure how the threading would work specifically in a Spark context. Since Spark is already doing a lot to distribute my code across each node I'm not sure if there are some hidden considerations I need to be weary of (i.e. I don't really want more than one instance of my timer, I want to make sure it stops when the sparky parts of my code complete, etc.
Is it safe to use a regular Timer in a Spark job? If I did something like this:
ANSWER
Answered 2019-Jul-17 at 06:16I believe your implement is sufficient. The timer task will only run in the driver node. (as long as you do not include them in the RDD transformation) Only thing need to be careful is error handling. Make sure the timer task getting terminated when the transformation throws an error. otherwise your job could stuck because of timer thread is still alive.
QUESTION
Can haskell correctly model models? I'm have very little experience with Haskell. I have never seen a common imperative oop based programming language that can use models.
For those uninitiated, a model is basically a collection of types. It is a category where the objects are types. A Natural transform is then used to model a model.
Quite simply:
...ANSWER
Answered 2019-Jul-02 at 02:24The first thing you should understand is that Haskell doesn't have objects or inheritance or overrides or anything of that nature. Since you've largely defined your problem in terms of those concepts, the short answer is: no, Haskell doesn't let you define a template for an object inheritance graph and then rubber-stamp that out a few times, because Haskell doesn't even have inheritance.
However, if I take a very stretched interpretation of your question by throwing out all of the OOP concepts, I get to: does Haskell have a way to define a uniform interface (as in, a collection of functions; not an OOP interface) that can be used polymorphically with certain fixed sets of data types? And the answer to that is yes, with type families.
Here is an example of how to use type families, inspired by your animal/food D code:
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