Syntax, Parameter and Return Value
Syntax:
_.add(number, other)
Parameters:
-
number (Number): The first number to add.
- other (Number): The second number to add.
Return Value:
(Number) - Returns the sum of number and other.
Examples
Basic Addition:
JavaScript
var _ = require('lodash');
console.log(_.add(6, 4));

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Output:
10
Demonstrates a simple use of _.add() for adding two numbers.
Using in Calculations:
JavaScript
var totalCost = _.add(100, 50); // Adding cost and shipping
console.log(totalCost);

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Output:
150
Shows how _.add() can be used in a basic arithmetic calculation.
Chaining with Other Lodash Operations:
JavaScript
var result = _([1, 2]).map(x => _.add(x, 10)).value();
console.log(result);

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Output:
[11, 12]
An example of chaining _.add() with other Lodash methods for array manipulation.
Incrementing Values:
JavaScript
var scores = [8, 9, 10];
var incrementedScores = scores.map(score => _.add(score, 1));
console.log(incrementedScores);

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Output:
[9, 10, 11]
Demonstrates using _.add() to increment each value in an array.
Frequently Asked Questions
Is _.add() necessary for simple additions?
For basic addition, native JavaScript operations are usually sufficient. _.add() is more about consistency in coding style, particularly in projects heavily utilizing Lodash.
How does _.add() handle non-numeric inputs?
If non-numeric values are passed to _.add(), it may result in NaN (Not a Number), similar to JavaScript's native addition behavior with invalid inputs.
Can _.add() be used with large numbers or for financial calculations?
_.add() can handle large numbers, but for high-precision financial calculations, specialized libraries designed for such tasks are recommended to avoid floating-point errors.
Conclusion
Lodash's _.add() method offers a clear and concise way to perform addition operations within JavaScript. It aligns well with the Lodash ecosystem, providing a consistent approach to arithmetic alongside other data manipulation tasks.
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