Delf Delf-Lee
Delf-Lee
/ fb-low.html
Last active
November 3, 2018 19:18
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| <!doctype html> | |
| <html> | |
| <body> | |
| <div id="notice"> | |
| 이 기능을 이용하기 위해서는 facebook에서 권한을 승인해야 합니다. | |
| <a href="https://www.facebook.com/v3.2/dialog/oauth? | |
| client_id={app-id} | |
| &redirect_uri={redirect-uri} | |
| &state={state-param} | |
| &scope=email"> <!-- 이메일 권한 추가 --> |
Delf-Lee
/ StringVsSringBuilder.java
Created
November 2, 2018 19:31
The difference in concat speed between '+' operator of String and append() of StringBuilder
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| public class StringVsSringBuilder { | |
| public static void main(String[] args) { | |
| String string = ""; | |
| StringBuilder stringBuilder = new StringBuilder(); | |
| String value = "abcd"; | |
| /* String의 '+' 연산 */ | |
| long start = System.currentTimeMillis(); | |
| for (int i = 0; i < 100000; i++) { | |
| string += value; |
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| package _workspace; | |
| import java.util.ArrayList; | |
| import java.util.Arrays; | |
| import java.util.Collections; | |
| import java.util.List; | |
| public class Main { | |
| public static void main(String[] args) { |