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How to properly create composite primary keys - MYSQL
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Suppose you have already created a table now you can use this query to make composite primary key
alter table employee add primary key(emp_id,emp_name);
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How to implement OnFragmentInteractionListener
...ate for API 23: 8/31/2015
Overrided method onAttach(Activity activity) is now deprecated in android.app.Fragment, code should be upgraded to onAttach(Context context)
@Override
public void onAttach(Context context) {
super.onAttach(context);
}
@Override
public void onStart() {
super.onSt...
Can I use git diff on untracked files?
...ob to the index at that location. The upshot is that your "untracked" file now becomes a modification to add all the content to this zero-length file, and that shows up in the "git diff" output.
git diff
echo "this is a new file" > new.txt
git diff
git add -N new.txt
git diff
diff --git a/new....
Error when installing windows SDK 7.1
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This is a known issue http://support.microsoft.com/kb/2717426
CAUSE
This issue occurs when you install the Windows 7 SDK on a computer
that has a newer version of the Visual C++ 2010 Redistributable
installed.
RESOLUTION
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jQuery .data() does not work, but .attr() does
...nt .data() calls could do some basic checks() like whether the value empty now or string length changed (matching the cache with current value)
– minhajul
Nov 6 '15 at 2:52
1
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Calculating days between two dates with Java
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UPDATE: The original answer from 2013 is now outdated because some of the classes have been replaced. The new way of doing this is using the new java.time classes.
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("dd MM yyyy");
String inputString1 = "23 01 1997"...
Get notified when UITableView has finished asking for data?
...the loading process before it ended. But Apple changed it at some point. Now the UITableView class can cache the reloadData call with all the row insert and delete calls. If you look at the @interface declaration for UITableView, you will find NSMutableArray member _reloadItems right under _inser...
TDD/BDD screencast/video resources [closed]
...ntros please. I'm surprised not to find anything like that though. If you know of any resources that fit the requirement, please list them.
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How do I undo a checkout in git?
...ocal git repo. I haven't made any changes to it, I was just looking at it. Now I want to go back to my latest commit - how do I do that?
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Git : List all unmerged changes in git
...s, and not regularly deleting them when I don't need them any more, I have now ended up with about 50 branches ;)
3 Answers...