How to Improve Design Skills
April 26, 2019
How to Improve Your Skills as a Programmer
How to Improve Your Skills as a Programmer
April 25, 2019
Git Tips Tricks for Developers
Install Bash git completion
brew install git bash-completion
Caching GitHub password in Git
git config --global credential.helper 'cache --timeout 72000'- Remove cached password (to reenter new password when it’s changed)
git credential-osxkeychain erase
Temporarily ignoring files
git update-index --assume-unchanged file-pathgit update-index --no-assume-unchanged file-path
Remove file from the repository but keep it locally
git rm --cached -r somedir/somefilethen add them to .gitignore
Reset current HEAD to the specified state
undo last commit
git reset --soft HEAD~1- Undo commits permanently:
git reset --hard HEAD~3- The last three commits (HEAD, HEAD^, and HEAD~2) were bad and you do not want to ever see them again.
- Undo a merge or pull inside a dirty working tree: git reset –merge ORIG_HEAD
- return to any previous revision
git reset --soft commit_hash
- Reset committed changes to local changes
git reset HEAD~
undo git pull
git reset --hard
Reset local branch to be same as remote branch
git fetch --all && git reset --hard upstream/master- If need delete everything(just like re-clone): git clean -x -d -f
~ vs ^
- Both ~ and ^ on their own refer to the parent of the commit.
- ~2 means up two levels in the hierarchy, via the first parent if a commit has more than one parent
- ^2 means the second parent where a commit has more than one parent (i.e. because it’s a merge)
- HEAD~2^3 means HEAD’s grandparent commit’s third parent commit.
rebase
Edit your X most recent commits interactively (squash, fixup, reword, drop)
- git rebase -i HEAD~X
Modify a specific commit
git rebase --interactive 'bbc643cd^'
# change pick to edit, Make your changes and then commit them with the same message
git commit --all --amend --no-edit
git rebase --continueSplit a commit in two with Git
git rebase -i <oldsha1>
# mark the expected commit as `edit` (replace pick in front of the line), save and close
git reset HEAD^
git add ...
git commit -m "First part"
git add ...
git commit -m "Second part"
git rebase --continueDelete a commit
- If it is the last commit this is very straight forward. git reset HEAD
git rebase --onto <branch name>~<first commit number to remove> <branch name>~<first commit to be kept> <branch name>
# e.g to remove commits 2 & 3
git rebase --onto repair~3 repair~1 repairBranch
- Delete local branch:
git branch -d <local_branchname> - Delete remote branch:
git push origin --delete <remote_branchname>orgit push origin :<remote_branchname> - Rename local branch name:
git branch -m <new-branch-name>
Checkout remote brach
- git branch shows local branch, sometimes some remote branches are not in local even after git fetch -all (when have multiple remotes), in this case:
- which git branches are tracking which remote / upstream branch?
- git branch -vv # doubly verbose!
- How to change the remote a branch is tracking?
- git branch branch_name –set-upstream-to your_new_remote/branch_name
git log
- git log –oneline [–pretty=oneline]
Show commit id only
- git log -1 –pretty=format:“%H”
View change in a specific commit
- git show
Undo anything
Wipes your unstaged changes
- git checkout
undo rm -rf * - git stash - if no local update
undo git commit –amend
- git reset –soft HEAD@{1}
Checkout remote file after merge conflict
- git checkout HEAD the_file
shallow clone
git clone --depth 1 https://path/to/repo/foo.git -b bar- –no–single–branch instead -b bar, to download first commit form ALL branches.
- –no-checkout(-n): No checkout of HEAD is performed after the clone is complete.
ls-remote
git ls-remote --tags remote_git_url
Tags
- git tag
git clean
- -n: –dry-run
git clean -x -d -f
git commit
- Add change to your last commit, instead of making a new commit
git commit --amend
Commit messages
<type>(<scope>): <subject>- type: feat(new feature), fix, docs, style(format code, no code change), refactor, test(add test cases), chore
git remote
- List all remotes:
git remote - Add another remote:
git remote add upstream the_url git remote showgit remote show upstream
git stash
- -u|–include-untracked
- List all stashes:
git stash list git stash- Also stack untracked files:
git stash -u - Apply the stash:
git stash apply <stash@{n}> - Apply last stash and remove the stash:
git stash pop git stash cleargit checkout <stash@{n}> -- <filePath>
git diff
- Ignore the white space:
git diff -w - Show local staged change(added but not committed):
git diff --cached - Show committed but not pushed change:
git diff origin/master..master
emoji
Misc
- Show recent changes:
git whatchanged --since='1 weeks ago' - git status - show tracked files only
git status -uno(--untracked-files=no)
- Delete all stashes:
git stash clear - git add –interactiveSymbolic links in Git
- The following untracked working tree files would be overwritten by merge
- The problem is that you are not tracking the files locally but identical files are tracked remotely so in order to “pull” your system would be forced to overwrite the local files which are not version controlled.
How to Copy Text From Copy-Protected Web Pages
Awesome Tips about Chrome Series
The Problem
Sometimes we want to copy some text/code from a website, but find out that it disables copy text or even completely disables right click, right context menu. It’s annoying, but we can fix it easily.
Using Proxy Sites
Specific Chrome Extensions
We can use the following Specific Chrome extensions to make us able to copy text.
Reader View Chrome Extensions
If we don’t want to install the above specific Chrome extensions, then we can use the more general reader view chrome extension which can also make us able to copy text.
Read here for more must-have google chrome extensions
Reader View
- This opens the page in chrome-extension:// and we have to wait until (at least) the main content of the page is loaded.
- The greatest thing is it reduces the memory usage a LOT for pages that load a lot of flashes, ads.
- e.g. reduces this page from around 450+ mb to 87mb.
- This also works well together with
The Great Suspender: the page in reader view will not be suspended as it runs in extension mode. - Assign shortcut
Ctrl+Shift+RtoToggle the Reader View - Print and save the reader mode version, show or hide image.
- Able to change the speed of
text-to-speech - The Cron is it doesn’t work with other extensions, e.g., Chrome Vimium
- as It opens the page in chrome-extension.
Tips
- Before
Ctrl+Shift+Rto enter reader view:- Copy the url
Ctrl+l then Ctrl+coryyfrom Chrome Vimium Cmd+downto scroll to the end of page first to make sure the page load completes.
- Copy the url
- It adds the page url to the first line from there we can copy the page url
Just Read
- Able to change theme(dark or light), width, font size and save the config.
- Assign
Ctrl+Shift+LtoOpen the Just Read format for the current page - Assign
Ctrl+Shift+KtoEnable user text selection mode using Just Read, then choose which part you want to select then enter (it will automatically try best to choose), it will show the section in read mode. - When it doesn’t work(e.g. in quip), use
View this selection in Just Read. - Works with Chrome Vimium
Clearly
- Assign shortcut
Ctrl+Shift+CtoToggle Clearly - Make
not easy to copy texteasier to copy - Support outline, different themes, fullscreen, text-to-voice
- Cron: Can’t change the width
- Distill Page from Chrome
- the result is not that good, and hard to run the command.
Mercury Reader
- can’t change width
Summary
- Use Reader View when the page(website) is slow: load lots of ads, flash, uses a lot of memory and you will take time(2+ mins) to read it.
- Use Just Read in other case.
- Use Clearly to check the outline.
How to Make Money with the Amazon Associates Program
Amazon Affiliate Program provides different kinds of ads.
Native Shopping Ads
- amzn_assoc_placement should be unique.
- amzn_assoc_search_bar: false/true to whetehr show the search bar.
Custom Ads
Custom Ads allows us to curate specific products from Amazon that you would like to recommend and place the ad unit into your webpage. All we need is find a list ASINs of products and add them into amzn_assoc_asins.
<script type="text/javascript">
amzn_assoc_placement = "adunit0";
amzn_assoc_search_bar = "false";
amzn_assoc_tracking_id = "the_tracking_id";
amzn_assoc_ad_mode = "manual";
amzn_assoc_ad_type = "smart";
amzn_assoc_marketplace = "amazon";
amzn_assoc_region = "US";
amzn_assoc_title = "Best books for algorithms interview";
amzn_assoc_linkid = "the_amzn_assoc_linkid";
amzn_assoc_asins = "0984782850,1517671272,1617292230,032157351X,1537713949,0262033844,111941847X,819324527X";
</script>
<script src="//z-na.amazon-adsystem.com/widgets/onejs?MarketPlace=US"></script>
<div id="amzn-assoc-ad-19c89cc6-6f8f-485d-a31a-7bc49e98e831"></div><script async src="//z-na.amazon-adsystem.com/widgets/onejs?MarketPlace=US&adInstanceId=19c89cc6-6f8f-485d-a31a-7bc49e98e831"></script>Recommendation Ads
- Displays products related to your page content and visitors
- We can choose “Emphasize Categories”.
Search Ads
Display search results from Amazon.com by specifying a search phrase and selecting a relevant category to your page content in a responsive ad unit that works across screen sizes.
We can specify a list of search phrases and sort them by priority, random pick one search phrase and stick to it in the X(10) days.
<script type="text/javascript">
function createCookie(name, value, days) {
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
var expires = "; expires=" + date.toGMTString();
} else var expires = "";
document.cookie = name + "=" + value + expires + "; path=/";
}
function readCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(";");
for (var i = 0; i < ca.length; i++) {
var c = ca[i];
while (c.charAt(0) == " ") c = c.substring(1, c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
}
return null;
}
function deleteCookie(name, path, domain) {
if (readCookie(name)) createCookie(name, "", -1, path, domain);
}
function pickOne(weightedPosts) {
var totalWeight = 0;
for (let post of weightedPosts) {
totalWeight += post.weight;
}
var randomWeight = Math.random() * totalWeight;
var currWeight = 0;
for (let post of weightedPosts) {
currWeight += post.weight;
if (currWeight > randomWeight) {
return post;
}
}
}
</script>
<script type="text/javascript">
var pos = readCookie("amazonItemPos")
var products = Array("iphone", "iPad Pro", "iPad Mini", "apple watch series 4", "MacBook Pro", "MacBook Air", "google pixel 3", "chromebook", "Amazon Echo");
var items = new Set();
var totalCount = products.length;
for (var i = 0; i < products.length; i++) {
items.add(
{
product: products[i],
weight: totalCount - i,
pos: i
}
);
}
// var item = items[Math.floor(Math.random() * items.length)];
if (pos == null || pos <0 || pos > products.length) {
// pos = Math.floor(Math.random() * items.length);
pos = pickOne(items).pos
createCookie("amazonItemPos", pos, 10);
}
var item = products[pos];
amzn_assoc_placement = "adunit3";
amzn_assoc_search_bar = "true";
amzn_assoc_tracking_id = "the_tracking_id";
amzn_assoc_search_bar_position = "bottom";
amzn_assoc_ad_mode = "search";
amzn_assoc_ad_type = "smart";
amzn_assoc_marketplace = "amazon";
amzn_assoc_region = "US";
amzn_assoc_title = "";
amzn_assoc_default_search_phrase = item;
amzn_assoc_default_category = "All";
amzn_assoc_linkid = "the_amzn_assoc_linkid";
</script>
<script src="//z-na.amazon-adsystem.com/widgets/onejs?MarketPlace=US"></script>Tips
User Scripts to Change Html5 Video Player Speed
The Goal
I Would like to change the speed of HTML5 video player at pan.baidu.com, so I can spend less time on the video and finish it sooner.
The Implementation
I found some user script at greasyfork for Chrome with tampermonkey extension
- This one works but can only change the speed to 1.5X
- The other one doesn’t work, maybe due to the change of website
Based on these 2 script, I made the following simple user script that can change video speed to 1.5, 1.75, 2.0.
// ==UserScript==
// @name Change speed at pan.baidu
// @namespace http://tampermonkey.net/
// @version 1.0
// @description Add button to change to 1.5, 1.76, 2X speed
// @author Jeffery Yuan
// @match *://*.pan.baidu.com/*
// @require https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js
// ==/UserScript==
(function() {
'use strict';
var $ = $ || window.$;
function addSpeedButton(parentNode, speed){
var cb = document.createElement("a");
cb.innerHTML='<a class="g-button" href="javascript:;" title="' + speed + '">'+
'<span class="g-button-right">'+
'<em class="icon icon-appeal" title="' + speed +'"></em>'+
'<span id="fps" class="text" style="width: auto;">' + speed + '</span></span></a>'
cb.onclick=function(){
videojs.getPlayers("video-player").html5player.tech_.setPlaybackRate(speed);
};
parentNode.after(cb);
}
// var tb = document.getElementsByClassName("g-button")[1];
var elms = document.getElementsByClassName("g-button");
var toolbar = elms[0].parentNode;
toolbar.removeChild(elms[1]);
toolbar.removeChild(elms[1]);
toolbar.removeChild(elms[1]);
var tb = elms[0];
addSpeedButton(tb, 2.0)
addSpeedButton(tb, 1.75)
addSpeedButton(tb, 1.5)
addSpeedButton(tb, 1)
})();Other Ideas
- Able to resume playback of a video at the point in time it was left.
Related Posts
How to be More Productive - Detail
Make it easier to find
- Put frequently used apps (like Google Keep) in first screen, etc
- Add bookmark with short and easy to remember name in Chrome to make it easier to find
- Delete history in Chrome to make search/autocompletion in Address bar work better
- Check here for how to google search like a pro
- Minimize(or kill) windows that are not going to be used recently
How to Save Context
- Compile error
- TODO tag
- Put the web page into a new window
- When we find something online that we should read or search later, we can shift+w to put this page into a new window so we can go back to it later.
- We can also use The Great Suspender to suspend the new tab or window so these pages don’t consume a lot of RAM.
- When we find something online that we should read or search later, we can shift+w to put this page into a new window so we can go back to it later.
- Git diff
- Undo then redo in editor
- Use Case: After search, or move pointer, we would like to go back to last edit position.
Pin
- Use Atom pinned-tabs to pin files that you are constantly working on recently
- “PINNED-TABS: CLOSE UNPINNED” if needed.
Preserve Last Session
- Set Chrome, iTerm2, Atom to restore last session.
- In Atom, select
Preserve Last SearchforCommand PaletteandFuzzy Finder
2X player
Shift+>(<)to increase/decrease speed in Youtube
- for pan.baidu
videojs.getPlayers("video-player").html5player.tech_.setPlaybackRate(2)
- user scripts to change html5 video player speed
X movie in 10 minutesetc
What to do at Spare Time (<5)
- Clear things in Gmail(delete emails or draft), Google Keep
What else we can do
- During development, the depended service is down, before they fix it, we can still clean the code or create the PR.
Example
- Need a pr to test branch in another remote to make some experiment -> directly push to the test branch
- Run multiple long-time(>2+ seconds) commands together:
delete.sh && build.sh && deploy.sh
- During development/test, don’t make change in the build output,
- When we apply the change back to source, we may forget what change we have made, or waste some time to figure it out.
How to be More Productive
What Problems to Solve
- is it worth?
- to what extent?
- Should we fix it now? or put it into backlog and solve it later?
- Our brain will work on the problem in background, after we work on more same problem/domain, it may be much easier to solve it.
- what you try to achieve or learn
Priority
- work on the most important thing
- put trivial things into backlog
Proactive
Track + Notification
- Use Timer for wakeup
- Use Calendar to track event, deadline
- Use Keep to track ideas/todo
Less Distraction
Turn off unnecessary notification
- Gmail
- Gmail App only notifies email from primary category
- Figure our why it’s marked as important and remove its filter or move it out from Primary category
Schedule
Health
- sleep and wake up at the same time
Sleep & Rest
- Do Not Disturb at Bedtime
- unclutter your mind
Music
- to wake up
- get excited
Wake up
- My wife is a teacher, so she wakes up very early at 6:00 am
- It’s best for me to adjust accordingly: wake up early.
Track TODO
- Write Email Now And Send It Later
Schedule Send
- Draft email
- whenever you remember you need to send one email, create one draft first
Developer TODO
- TODO
- leave a compile error
Motivation
- Have a thing to do/wake up tomorrow
Get Things Done
- the problem/pain-point, find a way to fix it
- Write things down
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