ProType | A new kind of object oriented front-end JS framework | Model View Controller library
kandi X-RAY | ProType Summary
kandi X-RAY | ProType Summary
A new kind of object oriented front-end JS framework.
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QUESTION
my Javascript function is executing both if else blocks. I want to add checkbox value in array if it is checked and remove value if its unchecked.
The output is inside if and inside else. But i want to run either if or else block.
Edit: I am generating dynamic label tags using php. I just shown one label tag in this example for understanding. But value of each input tag is assgined from database and is wrapped in label tag.
...ANSWER
Answered 2021-May-22 at 14:00I just shown one label tag in this example for understanding
That was very unlucky, cause problem with your solution occurring only when there is more than 1 input element.
QUESTION
//function overloading
#include
using namespace std;
//declaration of function protype
int area(int);
int area(int, int);
float area(float);
int main()
{
cout << "calling the area() function for computiong the area of a square (side=5) - " << area(5) << "\n";
cout << "calling the area() function for computiong the area of a rectangle (length = 5, bredth = 10) - " << area(5, 10) << "\n";
cout << "calling the area() function for computiong the area of a cirlce (radius 5.5) - " << area(5.5) << "\n";
return 0;
}
int area(int side)
{
return (side * side);
}
int area(int length, int breadth)
{
return (length * breadth);
}
float area(float radius)
{
return (3.14 * radius * radius);
}
ANSWER
Answered 2021-Mar-31 at 06:36Type area(5.5f) to force the value to be a float.
The compiler does not know if it should cast your double value to an int or a float. Therefore, it is ambiguous.
QUESTION
I have this constructor for my class student.
...ANSWER
Answered 2020-Nov-30 at 15:46Because it is!
The type of a string literal, in C++, is const char[N] (where N is the length of the string including its null terminator). That decays to const char*, not char*.
In earlier versions of C++ (pre-2011), you were permitted to "forget" the const for compatibility with C, though doing so was deprecated (and attempting to "modify" the literal had undefined behaviour). Since then you must write it.
You've upgraded to a version of Visual Studio that enforces this rule, possibly only because its default C++ standard is C++11 or later.
It's a good thing; add the const.
If your course material uses char* here, it is out-of-date, and was always "wrong" in a sense.
even If I change my constructor protype to constant to pointer so it will give new error that I cannot initialize my non constant members with constant
You need to do the same thing to your member variables.
QUESTION
I currently have a String.protype called isColor, which is checking the color. But i dont want it to have an argument inside the function.
I want to archive something like this:
...ANSWER
Answered 2020-May-07 at 14:45Inside the method, compare the this (the instance) against whatever you're comparing it against:
QUESTION
I wonder how to subscribe to the changes of a JavaScript object e.g. like Redux does. I read through a lot of JS documentations but I couldn't find a non-deprecated way to handle this problem (Object.protype.watch() as well as Object.observe() are deprecated). Moreover I read a few Stackoverflow questions regarding this topic but they are all at least 5 years old. To visualize my problem I'll show an example.
This could be an object I want to watch for:
...ANSWER
Answered 2018-Apr-25 at 11:34Have you tried using Proxy from ECMA6? I think this is what you are looking for You only have to define a function as the set of the validator of the Proxy like this:
QUESTION
I can specify the proTypes of classes in a simple React component NewButton.
ANSWER
Answered 2020-Feb-07 at 05:59I think what you're looking for is something like this:
QUESTION
i have some fields in my database table, and i want to display title,description and keywords according to every page, Please let me know how i can display this. My database fields name are metatitle,metadesc,keyword
Here are my Controller code where i am displaying the property list...
...ANSWER
Answered 2020-Mar-16 at 11:15You can do the following way:
QUESTION
I needed some help to convert to tables and later to django's models, using Django's Admin interface, two entities (Item, Prototype) where:
- Item can be a standalone object or be part of one prototype only
- Prototype exists only if it contains at least an Item
- A Prototype can contain many different items.
The ER diagram should be this:
At the Django side I wished: from the PrototypeAdmin to include any Item(s) and from ItemAdmin to assign to one prototype like in the followings pictures:
I made some attempts designing different models but I'm not fully satisfied of my results (one try implies many NULLs, another gives an admin interface not very easy to use, from another one I can only add Items to protype..)
EDIT:
My first attempt was to design a Prototype table with two primary keys, but I discovered Django doesn't work well with them and also I don't have any widget inside ItemAdmin to assign the Item to a prototype:
ANSWER
Answered 2019-Jan-24 at 16:07Given your specs, ie:
Item can be a standalone object or be part of one prototype only Prototype exists only if it contains at least an Item A Prototype can contain many different items.
The nearest schema is your second one:
Items: (ItemID, itemName, prototype(FK))
Prototypes:(PrototypeID,prototypeName)
The other ones are not valid: the first one doesn't respect "A Prototype can contain many different items" and the third one doesn't respect "Item can be part of one prototype only".
The fact that 95% or more of item.prototype_id are null it not an issue in any way.
QUESTION
I protype with moleculer and just wondering on an architecural issue. My app is build with many pieces: moleculer services, redis, nats, C language app,... and it's deployed on ks8 cluster. I have to subscribe to an event published by moleculer service in my C app. Having redis and nats on board I have to options:
- use native ioredis api from moleculer servise to publish an event and consume it in my C client (done)
- use NATS moleculer tansporter and consume it in C client (not even started)
What is suggested way of dealing with such architecture from your point of view?
...ANSWER
Answered 2020-Jan-10 at 12:36If measured by performance, then NATS will outperform REDIS on large data volumes.
If it’s a matter of architecture design, then you won’t be able to take some moleculer events, you will need to fully implement the broker protocol and process events already. I do not think that this option is suitable for you. It is better to use a separate data bus, and in moelculer to make a service that will transmit internal events to the external data bus.
QUESTION
I have web application with Mern. it's working good with json data. i just used files in my projects i can upload files front-end to back-end through multer middle-ware and storing on server and saving their name in mongoDb database.
so when i fetch data from back-end normal data is working well but when i try to display files that are just displaying name that are stored in database not displaying actual image so i'm stuck. how to show images in front-end that are stored in back-end and their names i fetched from mongodb?
this is fetched data form db and displaying in front-end.
...ANSWER
Answered 2019-Dec-28 at 08:44When you save the file on the server, you should store the whole file URL in your MongoDB database, because then you can just reference it like you've already done.
So, instead of just saving the name of the file, you should save the file URL. Ex: https://example.com/img/1234.jpg
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