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[Solved] KCL Equation question

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lindy Asks: KCL Equation question
Hi I was wondering why the i_A is negative in the answer in the photo, it was the only one that ended up not being right when I did the KCL on my own, what would have been my mistake as to why I ended up with a positive instead?
enter image description here

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Unreplied Posts

[Solved] How to display time from JSON in HorizontalPicker Flutter?

Smile Asks: How to display time from JSON in HorizontalPicker Flutter?
enter image description here

I would like to create a scrollable horizontal picker exactly like the picture shown above to display the time stored in JSON. However, I faced the error of ‘Invalid double 12:00PM’.

Below is my code:

Code:
Widget build(BuildContext context) {
    return new Scaffold(
        body: Container(
          margin: EdgeInsets.all(0.0),
          width: double.infinity,
          height: 120,
          child: HorizontalPicker(
              minValue: double.parse(data.schedule.delivery[0].time.toString()),
              maxValue:  double.parse(data.schedule.delivery[data.schedule.delivery.length].time.toString()),
              divisions: data.schedule.delivery.length,
              showCursor: false,
              backgroundColor: Colors.white,
              activeItemTextColor: Colors.black,
              passiveItemsTextColor: Colors.grey,
              onChanged: (double value) {
                setState(() {
                  holder = value.toString();
                });
              }
          ),
        ),
        );
  }

Above is JSON data enter image description here

Below is the error displayed: enter image description here

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[Solved] ES9 javascript update array of objects from other array of objects

Joe Asks: ES9 javascript update array of objects from other array of objects
I have an array containing carriers details:

Code:
const carrier=[
                {"carrier_code":"ups","items":0,"printable":0},
                {"carrier_code":"dhl","items":0,"printable":0},
                {"carrier_code":"tnt","items":0,"printable":0}
              ];

Then another array containing orders:

Code:
const orders = [
                  {"order_id":"00101","carrier_code":"dhl","printable":0},
                  {"order_id":"00101","carrier_code":"ups","printable":1},
                  {"order_id":"00101","carrier_code":"dhl","printable":1},
                  {"order_id":"00101","carrier_code":"dhl","printable":1},
                  {"order_id":"00101","carrier_code":"ups","printable":1},
                  {"order_id":"00101","carrier_code":"ups","printable":0},
                  {"order_id":"00101","carrier_code":"ups","printable":1},
                  {"order_id":"00101","carrier_code":"ups","printable":1}
               ];

I want to update items and printable values in carrier in a way to have

Code:
carrier=[
            {"carrier_code":"ups","items":5,"printable":4},
            {"carrier_code":"dhl","items":3,"printable":2},
            {"carrier_code":"tnt","items":0,"printable":0}
        ];

I’ve been able to achieve a similar result using map/filter/reduce, but for a situation with one object and one array.

While for this situation I can only think to a nested forEach :

Code:
carriers.forEach(c =>
{
    orders.forEach(o =>
      {
          c.items+=o.carrier_code==c.carrier_code?1:0;
          c.printable+=o.carrier_code==c.carrier_code&&o.printable==1?1:0;
      }
    )
});
  
console.log(carriers)

But perhaps this is an ES6 solution

I was wondering that ES9 could offer a “better” solution,

Can somebody suggest an easier or more elegant way to achieve the same result?

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[Solved] I’m getting error in Guessing game in python

Rohith Mani varma Asks: I’m getting error in Guessing game in python
I tried to write a guessing game in python.. I wrote everything correct but still it’s not showing even if I guess correct number

{
“lightbox_close”: “Close”,
“lightbox_next”: “Next”,
“lightbox_previous”: “Previous”,
“lightbox_error”: “The requested content cannot be loaded. Please try again later.”,
“lightbox_start_slideshow”: “Start slideshow”,
“lightbox_stop_slideshow”: “Stop slideshow”,
“lightbox_full_screen”: “Full screen”,
“lightbox_thumbnails”: “Thumbnails”,
“lightbox_download”: “Download”,
“lightbox_share”: “Share”,
“lightbox_zoom”: “Zoom”,
“lightbox_new_window”: “New window”,
“lightbox_toggle_sidebar”: “Toggle sidebar”
}

1

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[Solved] viewing the elements of a set by set.toArray()

Tolg Aglo Asks: viewing the elements of a set by set.toArray()
beginner to java here,

Is there a way to view the elements of a set by doing something like set.toArray() ? (i being an integer)

Ten-tools.com may not be responsible for the answers or solutions given to any question asked by the users. All Answers or responses are user generated answers and we do not have proof of its validity or correctness. Please vote for the answer that helped you in order to help others find out which is the most helpful answer. Questions labeled as solved may be solved or may not be solved depending on the type of question and the date posted for some posts may be scheduled to be deleted periodically. Do not hesitate to share your response here to help other visitors like you. Thank you, Ten-tools.

 

 


 

[Solved] Input and declaration statements within or outside function

Sandhya Asks: Input and declaration statements within or outside function
I’ve recently started learning how to code in python. I wanted to know if there is a norm or specific rule for the position of statements while using functions.

eg:

Code:
def example(x):
    y = 7
    print("Default value is", y)
    print("Value entered is", x)


a = int(input("Enter a value: "))
example(a)

Would it be better to move the input statement inside the function? Will this pose any problems in more complex programs?

Ten-tools.com may not be responsible for the answers or solutions given to any question asked by the users. All Answers or responses are user generated answers and we do not have proof of its validity or correctness. Please vote for the answer that helped you in order to help others find out which is the most helpful answer. Questions labeled as solved may be solved or may not be solved depending on the type of question and the date posted for some posts may be scheduled to be deleted periodically. Do not hesitate to share your response here to help other visitors like you. Thank you, Ten-tools.

 

 


 

[Solved] What can and can’t do after pointer-casting to a smaller type in C

Eric Asks: What can and can’t do after pointer-casting to a smaller type in C
Say I have a bigger type.

Code:
uint32_t big = 0x01234567;

Then what can I do for (char*)&big, the pointer interpreted as a char type after casting?

  1. Is that an undefined behavior to shift the address of (char*)&big to (char*&big)+1, (char*&big)+2, etc.?
  2. Is that an undefined behavior to both shift and edit (char*)&big+1? Like the example below. I think this example should be an undefined behavior because after casting to (char*), we then have limited our eyesight to a char-type pointer, and we ought not access, even change the value outside this scope.

Code:
uint32_t big = 0x01234567;
*((char*)&big + 1) = 0xff;
printf("%02xnnn", *((char*)&big+1));
printf("%02xnnn", big);

(This pass my Visual C++ compiler. By the way, I want to ask a forked question on that why in this example the first printf gives ffffffff? Shouldn’t it be ff?)

  1. I have seen a code like this. And this is what I usually do when I need to achieve similar task. Is this UB or not? Why or why not?

Code:
uint8_t catcher[8] = { 0 };
uint64_t big = 0x1234567812345678;
memcpy(catcher, (uint8_t*)&big, sizeof(uint64_t));

Ten-tools.com may not be responsible for the answers or solutions given to any question asked by the users. All Answers or responses are user generated answers and we do not have proof of its validity or correctness. Please vote for the answer that helped you in order to help others find out which is the most helpful answer. Questions labeled as solved may be solved or may not be solved depending on the type of question and the date posted for some posts may be scheduled to be deleted periodically. Do not hesitate to share your response here to help other visitors like you. Thank you, Ten-tools.

 

 


 

[Solved] Closest element in binary tree can be on right subtree too

Shiny Asks: Closest element in binary tree can be on right subtree too
Hello all I’ve seen several questions related to closest element in a binary tree given a target value. There was an approach that results in an answer in O(h). But there are chances that the closest element may be greater than the current element also which is not being addressed.( Since I do not have the required number of reputations, I could not comment) kindly look into this and if I’m wrong please let me know. Consider an Inorder traversal [2,7,8] If target is 6 then the answer should be 8 right. But the answer is returned 2 as per the O(h) algorithm. Reference: How to find the closest element to a given key value in a binary search tree?

Ten-tools.com may not be responsible for the answers or solutions given to any question asked by the users. All Answers or responses are user generated answers and we do not have proof of its validity or correctness. Please vote for the answer that helped you in order to help others find out which is the most helpful answer. Questions labeled as solved may be solved or may not be solved depending on the type of question and the date posted for some posts may be scheduled to be deleted periodically. Do not hesitate to share your response here to help other visitors like you. Thank you, Ten-tools.

 

 


 

[Solved] Sum count different in scala and SQL

abhishek gaikwad Asks: Sum count different in scala and SQL
Scala sum and SQL query sum giving different count. The sum for SQL query is showing very high has compared to scala query output. Any reason why it will be different

Code:
%scala
import org.apache.spark.sql.functions._
val df = spark.sql( "select * from view_error_log")
val grpdf = df.groupby("id","error_description","table", "log_date").agg(sum("totalRows").alias("totalRows"))

%sql
Select id,error_description,table,log_date,sum(totalRows) as TotalRows from
view_error_log group by id,error_description,table,log_date

Ten-tools.com may not be responsible for the answers or solutions given to any question asked by the users. All Answers or responses are user generated answers and we do not have proof of its validity or correctness. Please vote for the answer that helped you in order to help others find out which is the most helpful answer. Questions labeled as solved may be solved or may not be solved depending on the type of question and the date posted for some posts may be scheduled to be deleted periodically. Do not hesitate to share your response here to help other visitors like you. Thank you, Ten-tools.

 

 


 

[Solved] Switch statement within a do…while loop(values stacking)

Dexter1403 Asks: Switch statement within a do…while loop(values stacking)
I am a student and just 4 weeks into programming and I hope I can get help here huehue. So I am making a program where you can translate decimal numbers into octal and binary and vice versa. The program continues to ask the user to choose until they choose letter d to exit the program. The program seems to run fine at first but when I tried to use again the same letter and input values, the output seems to stack from the output from the last time, not overwriting I guess(sorry if my terminologies or grammar is wrong, I am not that good in english)What do I need to change? I can’t figur it out huhuhu.

Code:
#include<stdio.h>
#include<math.h>

int main(){
    int  c, k, r=0, e=0, dec=0, o=0, place=1;
    long n;
    char choice, new, d;
    
  
   do{ 
    printf("Choices:na. Decimal to binary and octalnb. Octal to decimal and binarynd. Exit.nn");
    printf("enter your choice:t");
    printf("n");
    
    scanf(" %c", &choice);
    
    switch(choice){
            
        case 'A':
        case 'a':
            printf("Conversion: Decimal to binary and octal.n");
            printf("Enter number:n");
            scanf("%ld", &n);
            printf("%ld is ", n);
           
                for (c =28; c >= 0; c--){
                k = n >> c;

                    if (k & 1)
                        printf("1");
                    else
                        printf("0");
                        }
            printf(" in Binary Form. n");
                
            printf("%ld is ", n);
            
            while (n != 0)
                    {
                        o=o+(n%8)*place;
                        n=n/8;
                        place=place*10;
                    }
            printf("%ld in Octal Form.nn", o);
        break;
            
        case 'b':
        case 'B':
            printf("Conversion: Octal to decimal and binary.n");
            printf("Enter number:n");
            scanf("%ld", &n);
            printf("%ld is ", n);
               
                for (c =28; c >= 0; c--)
                    {
                    k = n >> c;

                        if (k & 1)
                        printf("1");
                        else
                        printf("0");
                    }
            printf(" in Binary Form.n", n, k);
                
            printf("%ld is ", n);
                while(n!=0)
                    {
                        r=n%10;
                        dec=dec+r*(pow (8, e));
                        n=n/10;
                        e++;
                    }
            printf("%ld in Decimal Form.n", dec);
        
        default:
            printf("Exit.nn");
        break;
      
         
    }
    
   }while(choice == 'a'|| choice =='A'|| choice == 'b'|| choice =='B');
    
    return 0;
}

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[Solved] Search and replacing a string on specific file extensions with the folder name

Amir Ghorbani Asks: Search and replacing a string on specific file extensions with the folder name
I want to find a string (“AAA”) in an specific file extension (“*.txt”) inside a directory tree (../MyParentFolder), and replace it with the subfolder name (MySubfolder). I know a similar question is asked here but I cannot make the jump to replacing with the subfolder name.

Ten-tools.com may not be responsible for the answers or solutions given to any question asked by the users. All Answers or responses are user generated answers and we do not have proof of its validity or correctness. Please vote for the answer that helped you in order to help others find out which is the most helpful answer. Questions labeled as solved may be solved or may not be solved depending on the type of question and the date posted for some posts may be scheduled to be deleted periodically. Do not hesitate to share your response here to help other visitors like you. Thank you, Ten-tools.

 

 


 

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