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Robby Wu

blog.robby570.tw·Jan 31, 2025

Jan 31, 2025

JavaScript - 我獨自升級 substr

在加入了陳年專案維護中獲得了新知識。前言最近工作派發了一些 Legacy Code 專案翻修，難免會遇到一些 deprecated 的方法。面對這些陳年代碼，最大的敵人往往都是疏忽了商業邏輯以及代碼可讀性。本篇重點不在於介紹 substr, substring, slice ，想必大家都略懂這方法。如果使用冷門特性，你一輩子都會記得寫註解對吧！？這一篇的角度在於筆者對 Legacy Code 進行 String.substr() 重構的思路。從「維護性」與「效能」的之間...

JavaScript - 我獨自升級 substr

Discuss·38 reads

Pratik Shah

pratik676.hashnode.dev·Aug 26, 2024

Aug 26, 2024

Count Substrings with Exactly k Distinct Characters in a String

Problem Statement Given a string of lowercase alphabets, count all possible substrings (not necessarily distinct) that have exactly k distinct characters. Example:Input: S = "aba", K = 2Output: 3Explanation: The substrings are "ab", "ba", and "aba". ...

Discuss·20 likes·57 reads

Vikas Gupta

vikasfeedingdotnet.hashnode.dev·Jun 27, 2024

Jun 27, 2024

Master C# String Manipulation: Character Frequency, Remove Duplicates, Reverse & Find Substrings!

Watch now and master the essential string programs that will make you a C# wizard! 🔮 https://www.youtube.com/watch?v=nNsorUMalF0 In this video, you'll discover: ✨ How to count character frequency in a string ✨ How to remove duplicates from a strin...

Discuss·5 reads

Jeet Bhalu

jeetbhalu.hashnode.dev·Mar 14, 2024

Mar 14, 2024

Dart String: Extracting Text

Extracting Text: you can use a combination of string methods and regular expressions. using substring: You can use the substring method to extract a portion of a string based on its indices. void main() { String text = "Hello, world!"; // Extr...

Dart String: Extracting Text

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Dart String: Extracting Text

Jemin Kikani

jemin.hashnode.dev·Feb 28, 2024

Feb 28, 2024

Day 5 : how many String Methods in javascript with example ?

● String length ● String slice() ● String substring() ● String substr() ● String replace() ● String replaceAll() ● String toUpperCase() ● String toLowerCase() ● String concat() String Length:- ● String trim() ● String trimStart() ● String tr...

Day 5 : how many String Methods in javascript with example ?

Discuss·21 reads

Dayeon

yeonnan.hashnode.dev·Feb 01, 2024

Feb 01, 2024

[sql study note] replace, substring, concat, if, case, cast

replace를 이용하여 특정 문자를 다른 문자로 바꾸는 방법 REPLACE 함수는 컬럼 내의 특정 문자를 다른 문자로 바꿀 때 사용한다. replace(바꿀 컬럼, 현재 값, 바꿀 값) ex) '문곡리'라고 되어있는 주소를 '문가리'라고 바뀐 주소명으로 치환해주기 SELECT addr, REPLACE (addr, '문곡리', '문가리') "바뀐주소" FROM food_orders WHERE addr LIKE '%문곡리%' ...

[sql study note] replace, substring, concat, if, case, cast

Discuss·25 reads

Pratik Kumar

pratikkumar.hashnode.dev·Jan 14, 2024

Jan 14, 2024

KMP Algorithm

An Optimized string matching algorithm.

Discuss·4 reads

Ashik Bhuyan

ashik17.hashnode.dev·Sep 20, 2023

Sep 20, 2023

Subsequence Vs Substring Vs Subarray

Substring 👍 A substring is a contiguous(continuous) sequence of characters present within a string. It is a string present inside a string.For instance, the substrings of the string “tree” would be:‘t,’ ‘r,’ ‘e,’ ‘tr,’ ‘tre,’ ‘tree,’ ‘re,’ ‘ree,’ ‘e...

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Pranjit Medhi

pranjitmedhi.hashnode.dev·Aug 24, 2023

Aug 24, 2023

LeetCode 28. Find the Index of the First Occurrence in a String

Question Statement: Given two strings needle and haystack, return the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. Example 1: Input: haystack = "sadbutsad", needle = "sad" Output: 0 Explanation: "sad...

Discuss·3 reads

KENNETH

devkenny.hashnode.dev·Mar 03, 2023

Mar 03, 2023

Using SQL SUBSTR Function to Extract and Manipulate String Data

The SUBSTR function is a commonly used function in SQL for manipulating string data. This function is used to extract a substring from a larger string based on a specified starting position and length. In this article, we will discuss the SUBSTR func...

Using SQL SUBSTR Function to Extract and Manipulate String Data

Discuss·17 reads