I hereby claim:
- I am helen-gu on github.
- I am helengu (https://keybase.io/helengu) on keybase.
- I have a public key ASCt8qeEi-keTyADTV1PcokxAupOvMwrz-Z540NHVEuthwo
To claim this, I am signing this object:
Helen Gu Helen-Gu
Helen-Gu
/ encrypt_password.py
Created
May 19, 2022 21:45
— forked from jkatz/encrypt_password.py
Methods to create password verifiers for PostgreSQL
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| # Copyright 2019-2022 Jonathan S. Katz | |
| # | |
| # MIT License | |
| # | |
| # Permission is hereby granted, free of charge, to any person obtaining a copy | |
| # of this software and associated documentation files (the "Software"), to deal | |
| # in the Software without restriction, including without limitation the rights | |
| # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| # copies of the Software, and to permit persons to whom the Software is | |
| # furnished to do so, subject to the following conditions: |
Helen-Gu
/ git-cheatsheet.md
Created
April 13, 2021 19:37
— forked from median-man/git-cheatsheet.md
My Git Cheatsheet
- http://stackoverflow.com/questions/804115 (
rebasevsmerge). - https://www.atlassian.com/git/tutorials/merging-vs-rebasing (
rebasevsmerge) - https://www.atlassian.com/git/tutorials/undoing-changes/ (
resetvscheckoutvsrevert) - http://stackoverflow.com/questions/2221658 (HEAD^ vs HEAD~) (See
git rev-parse) - http://stackoverflow.com/questions/292357 (
pullvsfetch) - http://stackoverflow.com/questions/39651 (
stashvsbranch) - http://stackoverflow.com/questions/8358035 (
resetvscheckoutvsrevert) - http://stackoverflow.com/questions/5798930 (
git resetvsgit rm --cached)
Helen-Gu
/ git-cheatsheet.md
Created
April 13, 2021 19:37
— forked from median-man/git-cheatsheet.md
My Git Cheatsheet
- http://stackoverflow.com/questions/804115 (
rebasevsmerge). - https://www.atlassian.com/git/tutorials/merging-vs-rebasing (
rebasevsmerge) - https://www.atlassian.com/git/tutorials/undoing-changes/ (
resetvscheckoutvsrevert) - http://stackoverflow.com/questions/2221658 (HEAD^ vs HEAD~) (See
git rev-parse) - http://stackoverflow.com/questions/292357 (
pullvsfetch) - http://stackoverflow.com/questions/39651 (
stashvsbranch) - http://stackoverflow.com/questions/8358035 (
resetvscheckoutvsrevert) - http://stackoverflow.com/questions/5798930 (
git resetvsgit rm --cached)
Helen-Gu
/ System Design.md
Created
December 4, 2020 04:46
— forked from vasanthk/System Design.md
System Design Cheatsheet
Picking the right architecture = Picking the right battles + Managing trade-offs
- Clarify and agree on the scope of the system
- User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?
Helen-Gu
/ Java Collections Complexity cheatsheet
Created
June 16, 2020 01:31
— forked from iSergius/Java Collections Complexity cheatsheet
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Below are the Big O performance of common functions of different Java Collections. | |
| List | Add | Remove | Get | Contains | Next | Data Structure | |
| ---------------------|------|--------|------|----------|------|--------------- | |
| ArrayList | O(1) | O(n) | O(1) | O(n) | O(1) | Array | |
| LinkedList | O(1) | O(1) | O(n) | O(n) | O(1) | Linked List | |
| CopyOnWriteArrayList | O(n) | O(n) | O(1) | O(n) | O(1) | Array | |