기본 콘텐츠로 건너뛰기

git status, branch

git status

shows tracked and untracked, added and unadded files by git

git branch -a

shows all the branches, local AND remote from the project including HEAD point

git checkout -b newBranchName

makes new branch and switch to it
-b enables to make a new branch.

without the flag, checkout does its job with existing branchName.
It moves the head point to the branch.


DELETING A BRANCH

LOCAL
git checkout -d branchName
git checkout -D branchName

-d deletes the branchName
-D option stands for --delete --force, which deletes the branch regardless of its push and merge status, so be careful using this one!!

REMOTE
git push <remoteName> --delete <branchName>

or -d for alias of delete.


checkout = an act of switching between different versions of target entities
https://www.atlassian.com/git/tutorials/using-branches/git-checkout

deleting a branch source : https://koukia.ca/delete-a-local-and-a-remote-git-branch-61df0b10d323

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JS 5.5 task6 Create an extendable calculator

<HTML>   <body>   </body>   <script> function Calculator() {   let methods = {     "-" : (a, b) => a - b,     "+" : (a, b) => a + b   };   //methods is an object which keeps key for operators   //and value to return the actual operation values   //each returns the result of operation that key(operator) does   this.calculate = function (str){     //calculate is one element in the function Calculator     //it takes the string and returns the value     //in the function element list is delimeted by , not ;     let split = str.split(" "),     a = +split[0],     op = split[1],     b = split [2]     if(!methods[op] || isNaN(a) || isNaN(b)) {       return NaN; // error handling     }     return methods[op](a,b);   }   this.addMethod = function(name, func){     methods[name] = func;     //this is how to add new key and ele to object   } } let powerCalc = new Calculator; powerCalc.addMethod("*&
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JS 5.7 task5 Store read dates

<HTML>   <body>   </body>    <script>    let messages = [        {text: "Hello", from: "John"},        {text: "How goes?", from: "John"},        {text: "See you soon", from: "Alice"}    ];    let readMap = new WeakMap();    alert(readMap.size);    readMap.set(messages[0], new Date(2019, 3, 5));   </script> </HTML> <!-- task4 needed weakSet to save simply readmessage, this task needs to save THE TIME IT WAS READ along with the message itself the message out of the set or map means it hasn't been read I kinda feel good and bad at the same time to happen to read the solution but I do get to think more about the difference with tasks and be more available to understand the main contents so I think, its good? -->
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How to set base url when deployed in Heroku? : base url and axios

https://stackoverflow.com/questions/47164330/axios-api-calls-in-heroku/47165888 baseUrl = process.env.baseURL || "http://localhost:5000" Even more stable way https://stackoverflow.com/questions/52129849/how-to-get-the-base-url-variable-on-a-deployed-heroku-node-app const production  = 'https://examplePage.com'; const development = 'http://localhost:3000/'; const url = (process.env.NODE_ENV ? production : development); process.env.NODE_ENV will resolve to undefined if you are running on localhost production mode. and return production if you have deployed the app production mode.
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