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Unable to assign data to specific index of array in javascript


By : Alisson Carvalho Oli
Date : July 30 2020, 06:00 PM
I wish did fix the issue. First initialize the object at 0th position and the add the value like this
code :
new_json.sessions[0] = {};
new_json.sessions[0]["timing"] = []


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Javascript Prototype General Enquries and Assign Id by Array Index


By : Kakiho Vigori
Date : March 29 2020, 07:55 AM
this one helps. I personally never use the new keyword if I can avoid it and do pure prototype-based programming with Object.create. Here's a simple example. I create a prototype-object called rectangle and then create an object called myRectangle which inherits from rectangle.
code :
var rectangle = {
  init: function( x, y, width, height ) {
    this.x = x;
    this.y = y;
    this.width = width;
    this.height = height;
  },
  move: function( x, y ) {
    this.x += x;
    this.y += y;
  }
};

var myRectangle = Object.create( rectangle );
myRectangle.init( 0, 0, 2, 4 );
myRectangle.move( 3, 5 );
function Rectangle( x, y, width, height ) {
  this.x = x;
  this.y = y;
  this.width = width;
  this.height = height;
}

Rectangle.prototype.move = function( x, y ) {
  this.x +=x;
  this.y +=y;
};

var myRectangle = new Rectangle( 0, 0, 2, 4 );
myRectangle.move( 3, 5 );
function Parent() {
  /* expensive and possibly side-effect inducing initialization */
}

Parent.prototype.parentMethod = function() {};

function Child() {}

Child.prototype = new Parent();
Child.prototype = Object.create( Parent.prototype );
var parent = {
  parentMethod: function() {}
};

// Using underscore for stylistic reasons
var child = _.extend( Object.create( parent ), {
  childMethod: function() {}
});

var instance = Object.create( child );
instance.parentMethod();
instance.childMethod();

How to assign a value to a specific index of an array with Java codeModel


By : Democritus
Date : March 29 2020, 07:55 AM
it should still fix some issue .component() is available via the JExpression interface. All you need to do is use it via the interface:
code :
JExpression expression = ...
expression.component(JExpr.lit(1));

How do I insert an array at an array specific index without removing existing data at specified index using angular


By : Prin Jitsaereetham
Date : March 29 2020, 07:55 AM
hop of those help? I have a array, in that array I want to add another array on a particular index if the condition is met. , First off, I see various problems with your code.
Splice
code :
$rootScope.rows=[{...}, {...}];
cellValues=["some", "value"];

$rootScope.rows.splice(j, 0, cellValues);

console.log($rootScope.rows) //[{...}, {...}, ["some", "value"]]
rowValues=$rootScope.rows.slice(0,j).concat(cellValues, rowValues);
[["some", "value"], {...}, {...}]
$rootScope.rows=$rootScope.rows.concat(cellValues);
var rows=[1,2,3];

var cellValues=[4,5,6];

var newRow=rows.concat(cellValues);

console.log(newRow); //[1,2,3,4,5,6]
var obj1={
  one:1,
  two:2,
  three:3
}

var obj2={
  four:4,
  five:5,
  six:6
}

var obj3=angular.extend(obj1, obj2);

console.log(obj3);
/*
  {
    one:1,
    two:2,
    three:3,
    four:4,
    five:5,
    six:6
  }
*/
//nested arrays
var rows=[
  [1,2,3,4],
  [5,6,7,8],
  [9,10,11,12],
  [13,14,15,16],
];

//index of the nested array to merge
var arrayIndex=1;

//new array to merge with nested array (rows[arrayIndex])
var valuesToAdd=[22,33,44];

//Reference the nested array and merge it with the new array.
rows[arrayIndex]=rows[arrayIndex].concat(valuesToAdd);

console.log(rows[arrayIndex]); //[5, 6, 7, 8, 22, 33, 44]
for (var j = 0; j < $rootScope.input_columns.length; j++) {
    rows[j].paths=cellValues;
}
for (var j = 0; j < $rootScope.input_columns.length; j++) {
    for(var i=0;i<cellValues.length; i++) {
        rows[j]["path"+i]=cellValues[i];
    }
}

MongoDB Query to count documents a where specific array index exists. Index is in javascript variable


By : Aleksa Aki Vujnović
Date : March 29 2020, 07:55 AM
this will help I have some data that looks like this: , You can embed index in js code You need something like this.
code :
function count(myguid, index) {
    const query = {"guid": myguid};
    query["v." + index + ".cnt"] = {$exists: true};

    return db.MuCollection.count(query);
}
count("some-guid", 3);

How to assign 4 bytes at once into a specific index of a char array in C++


By : user2151761
Date : March 29 2020, 07:55 AM
will help you if you do not want to initialize the whole array, you can use memset or a similar function.
code :
#include <string.h>

...
memset(&buf[8], 0, 4);
#include <algorithm>
...
 std::fill(&a[8],&a[8+4],0);
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