19 lines
		
	
	
		
			257 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			19 lines
		
	
	
		
			257 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| 'use strict';
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| 
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| function arrayFind(arr, fn) {
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|   if (!Array.isArray(arr)) {
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|     return;
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|   }
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| 
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|   var idx = 0;
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|   while (idx < arr.length) {
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|     var result = fn(arr[idx]);
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|     if (result) {
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|       return result;
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|     }
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|     idx++;
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|   }
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| }
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| 
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| module.exports = arrayFind;
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