Lodash _.cond() Method
Lodash _.cond method creates a function that iterates over pairs and invokes the corresponding function of the first predicate to return truthy. The predicate-function pairs are invoked with the binding and arguments of the created function.
Syntax:
_.cond(pairs);
Parameters:
- pairs: [Array]The predicate-function pairs.
Return Value:
The predicate-function pairs.
Example 1: In this example, we are checking whether the given value is matching to the given condition and returning the result accordingly or not.
Javascript
// Requiring the lodash library const _ = require( "lodash" ); // Using _.cond() method let func1 = _.cond([ [_.matches({ 'Beginner' : 1 }), _.constant( 'Matches Beginner' )], [_.conforms({ 'for' : _.isNumber }), _.constant( 'Matches For' )], [_.stubTrue, _.constant( 'no match' )] ]); // Storing the Result gfg = func1({ 'Beginner' : 1, 'b' : 2 }); // Printing the output console.log(gfg); |
Output:
"Matches Beginner"
Example 2: In this example, we are checking whether the given value is matching to the given condition and returning the result accordingly or not.
Javascript
// Requiring the lodash library const _ = require( "lodash" ); // Using _.cond() method let func2 = _.cond([ [_.matches({ 'Beginner' : 1 }), _.constant( 'Matches Beginner' )], [_.conforms({ 'for' : _.isNumber }), _.constant( 'Matches For' )], [_.stubTrue, _.constant( 'No Match' )] ]); // Storing Result gfg1 = func2({ 'Beginner' : 0, 'for' : 1 }); gfg2 = func2({ 'Beginner' : '1' , 'for' : '2' }); // Printing the output console.log(gfg1); console.log(gfg2); |
Output:
"Matches For"
"No Match"
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