git index - How many versions of a file are kept in git when that file is modified? -


so reading version control git, 2nd edition , stumbled on paragraph (page 51, section "using git add")

most of day-to-day changes within repository simple edits. after edit , before commit changes, run git add update index absolute latest , greatest version of file. if don’t, you’ll have 2 different versions of file: 1 captured in object store , referenced index, , other in working directory.

what confuses me bolded sentence. let's opposite, change 1 file , run git add on , file staged. well, seems me again have 2 different version of file: 1 captured in object store , other in working directory , referenced index. difference index references file in working directory rather 1 in repo.

am missing insight here author wanted emphasize? how many different versions of file can exist in "git"? "git" not clear suppose means on working directory + object store + index.

the critical concept being conveyed 1 understand: git add step necessary prevent working tree , index differing each other.

"two different versions" not intended mean only 2 versions can exist; rather emphasizes content in working tree otherwise not included in index, concept folks new git fail grasp.


Comments

Post a Comment

Popular posts from this blog

javascript - AngularJS custom datepicker directive -

i make custom datepicker directive custom template. but have no idea how start building it... how include date data directive? i appreciate guide or give me advice work on more precisely. it might you! follow below steps html code sample: <label>birth date</label> <input type="text" ng-model="birthdate" date-options="dateoptions" custom-datepicker/> <hr/> <pre>birthdate = {{birthdate}}</pre> <script type="text/ng-template" id="custom-datepicker.html"> <div class="enhanced-datepicker"> <div class="proxied-field-wrap"> <input type="text" ui-date-format="yy-mm-dd" ng-model="ngmodel" ui-date="dateoptions"/> </div> <label> <button class="btn" type="button"><i class="icon-calendar"></i>
Read more

javascript - jQuery date picker - Disable dates after the selection from the first date picker -

<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>jquery ui datepicker - default functionality</title> <link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css"> <script src="//code.jquery.com/jquery-1.10.2.js"></script> <script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script> <link rel="stylesheet" href="/resources/demos/style.css"> <script> $(function () { $("#datepicker1").datepicker(); }); </script> <script> $(function () { $("#datepicker2").datepicker(); }); </script> </head> <body> <p>date 1: <input type="text" id="datepicker1"></p> <p>date 2: <input type="t
Read more