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String.indexOf vs String.replace no-hit
(version: 0)
Compare String.IndexOf and String.replace function
Comparing performance of:
String indexOf vs String replace
Created:
2 years ago
by:
Guest
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Script Preparation code:
var genes = '-AKR1C2--AMH--AMHR2--AR--ARX--ATRX--B9D1--CBX2--CEP41--CYB5A--CYP11A1--CYP11B1--CYP17A1--CYP19A1--DHCR7--DHH--DMRT1--DYNC2H1--FRAS1--FREM2--GATA4--GRIP1--HOXA13--HSD17B3--HSD3B2--LHCGR--MAMLD1--MAP3K1--MKKS--NEK1--NR0B1--NR3C1--NR5A1--POR--RIPK4--ROR2--RSPO1--SOX3--SOX9--SRD5A2--SRY--STAR--TCTN3--TSPYL1--DYNC2I1--WNT4--WT1--ZFPM2-'; var gene = '-CYPhjh fb ff bj-';
Tests:
String indexOf
var i = genes.indexOf('-' + gene + '-');
String replace
var i = genes.replace(/`${gene}`/i, gene);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
String indexOf
String replace
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and explain what's being tested. **Benchmark Overview** The benchmark compares two string manipulation functions in JavaScript: `String.indexOf` and `String.replace`. The goal is to determine which function performs better, with faster execution times. **Options Compared** Two options are being compared: 1. **String.indexOf**: This function searches for a substring within a given string and returns the index of the first occurrence. 2. **String.replace**: This function replaces occurrences of a pattern (regex or literal) in a string. **Pros and Cons of Each Approach** **String.indexOf:** Pros: * Simple and straightforward to implement * Fast, as it only requires a single pass through the string Cons: * May not be suitable for searching multiple substrings within a large string * May return incorrect results if the substring is not found (returns -1) **String.replace:** Pros: * Can handle multiple replacements of the same pattern * Returns the modified string, making it more useful in many scenarios Cons: * Generally slower than `String.indexOf` due to the additional processing required for regex or literal replacement * May be overkill if only a single substitution is needed **Library Used: None** There doesn't appear to be any external libraries being used in this benchmark. **Special JS Feature/Syntax: None** No special JavaScript features or syntax are being utilized in this benchmark. It's focused on the basic functionality of `String.indexOf` and `String.replace`. **Other Alternatives** Some alternative approaches could include: * Using a different regex engine (e.g., PCRE) * Implementing the replacement logic manually, without using the built-in `String.replace` function * Comparing the performance with other string manipulation functions, such as `String.prototype.includes()` or regular expressions with `RegExp.test()` * Testing with specific input patterns to optimize the performance of either function. Keep in mind that these alternatives would likely add additional complexity and may not be relevant to this specific benchmark.
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