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How to change the foreign key referential action? (behavior)
...a foreign key with column name fk_table2_id, with constraint name fk_name and table2 is referred table with key t2 (something like below in my diagram).
table1 [ fk_table2_id ] --> table2 [t2]
First step, DROP old CONSTRAINT: (reference)
ALTER TABLE `table1`
DROP FOREIGN KEY `fk_name...
Trim spaces from end of a NSString
... answered Apr 22 '11 at 14:15
DanDan
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Get last n lines of a file, similar to tail
I'm writing a log file viewer for a web application and for that I want to paginate through the lines of the log file. The items in the file are line based with the newest item on the bottom.
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Is there a way to delete a line in Visual Studio without cutting it?
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Edit.LineDelete is the name of the command. By default it's bound to Ctrl + Shift + L, but you can give it whatever you like in Tools | Options | Keyboard.
Edit: Corrected default shortcut info.
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Opening Android Settings programmatically
...d the code from the most upvoted answer:
startActivityForResult(new Intent(android.provider.Settings.ACTION_SETTINGS), 0);
It opens the device settings in the same window, thus got the users of my android application (finnmglas/Launcher) for android stuck in there.
The answer for 2020 and beyond (i...
How do I set a ViewModel on a window in XAML using DataContext property?
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In addition to the solution that other people provided (which are good, and correct), there is a way to specify the ViewModel in XAML, yet still separate the specific ViewModel from the View. Separating them is useful for when you want to write isolated test cases.
In App.xaml:
<Application...
MongoDb query condition on comparing 2 fields
I have a collection T , with 2 fields: Grade1 and Grade2 , and I want to select those with condition Grade1 > Grade2 , how can I get a query like in MySQL?
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Show all Elasticsearch aggregation results/buckets and not just 10
... possible aggs, what would be the difference between setting 0 (max_value) and 10000(Some big upper limit)?
– batmaci
Apr 21 '17 at 12:04
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Rails: How does the respond_to block work?
I'm going through the Getting Started with Rails guide and got confused with section 6.7. After generating a scaffold I find the following auto-generated block in my controller:
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eclipse won't start - no java virtual machine was found
Eclipse was running fine yesterday (and has been since I installed it about a year ago). Now all the sudden I'm getting the following error on startup:
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