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How to remove constraints from my MySQL table?
...an show the names of the foreign keys by using this query, as shown here:
SELECT CONSTRAINT_NAME FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
WHERE REFERENCED_TABLE_SCHEMA = '<database>' AND REFERENCED_TABLE_NAME = '<table>';
Then remove the foreign key by running the before mentioned DR...
Difference between save and saveAndFlush in Spring data jpa
... flush mode AUTO and you are using your application to first save and then select the data again, you will not see a difference in bahvior between save() and saveAndFlush() because the select triggers a flush first. See the documention.
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Properly removing an Integer from a List
... is equal to Integer(1) will be removed. In both cases, the Java compiler selects the closest matching overload.
Yes, there is potential for confusion (and bugs) here, but it is a fairly uncommon use-case.
When the two List.remove methods were defined in Java 1.2, the overloads were not ambiguous...
Failed to load JavaHL Library
...
Try this:
Select Window >> Preferences
Expand Team >> SVN
Under SVN interface set Client to SVNKit (Pure Java) SVNKit....
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Why is `[` better than `subset`?
...vars, drop = drop]. The problem is how to get from the unquoted subset and select arguments to something that you can validly pass to [.data.frame.
– joran
Oct 2 '17 at 21:33
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Can I start the iPhone simulator without “Build and Run”?
...mulator from the Xcode, and then on the dock, Ctrl + Click on the icon and select Keep in Dock
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How to create Windows EventLog source from command line?
... does work, a quicker/easier way is to simply click on its Action menu and select Refresh.
– Rich Bayless
Aug 28 at 15:29
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ZSH iterm2 increase number of lines history
...2 documentation on how to change it.
open the iTerm2 preferences ⌘ + ,
select the Profiles tab
then select the Terminal subtab
Beware, changes to the Scrollback lines value take effect immediately so check Unlimited scrollback now if you don't want to delete your current buffer(s)
change the val...
How can I get a channel ID from YouTube?
...outube version is obtained very easily if you login to YouYube website and select 'My channel'
Your channel ID will be displayed on the address bar of your browser
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Class 'DOMDocument' not found
...xenial+1
php5.6-xml 5.6.30-9+deb.sury.org~xenial+1
You should explicitly select one to install.
In case anyone using 5.6 versions then go with this way
sudo apt-get install php5.6-xml
For Php Ver PHP7, Ubuntu:
sudo apt-get install php7.1-xml
or by
yum install php-xml
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