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Rails migrations: Undo default setting for a column
...name, column_name, default)
Sets a new default value for a column.
If you want to set the default value
to NULL, you are out of luck. You need
to DatabaseStatements#execute the
appropriate SQL statement yourself.
Examples
change_column_default(:suppliers, :qualification, 'new')
chan...
jQuery disable a link
...ll prevent the default behaviour of a hyperlink, which is to visit the specified href.
From the jQuery tutorial:
For click and most other events, you
can prevent the default behaviour -
here, following the link to jquery.com
- by calling event.preventDefault() in the event handler
If yo...
How to “fadeOut” & “remove” a div in jQuery?
I'm trying to give fadeout effect to a div & delete that div(id = "notification"), when an image is clicked.
7 Answers
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How to check if an object is a generator object in python?
In python, how do I check if an object is a generator object?
9 Answers
9
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What is self-documenting code and can it replace well documented code? [closed]
...ented code, you don't have to explain every single line because every identifier (variable, method, class) has a clear semantic name. Having more comments than necessary actually makes it harder (!) to read the code, so if your colleague
writes documentation comments (Doxygen, JavaDoc, XML comment...
MySQL: Fastest way to count number of rows
... mysql to php. Why do it when you can achieve the same on the mysql side?
If the COUNT(*) is slow, you should run EXPLAIN on the query, and check if indexes are really used, and where should they be added.
The following is not the fastest way, but there is a case, where COUNT(*) doesn't really f...
Regex - Should hyphens be escaped? [duplicate]
...eful answer. Turns out that in Eclipse Luna, the Java Linter will complain if you try to escape it.
– Keab42
Nov 19 '14 at 12:51
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Convert JSON String To C# Object
...
If you are unsure of the format for your class object, try this link. It translates your Json string into the right classes. Saved me a ton of time!
– jade290
Jan 22 '16 at 16:03
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Get a list of URLs from a site [closed]
...: ::::::: An error occured There was an error while accessing the URL specified: 159.121.ssss Please make sure to specify the correct website URL and resubmit your request.
– JustJohn
Jul 26 '16 at 21:29
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How to display a specific user's commits in svn log?
How to display a specific user's commits in svn? I didn't find any switches for that for svn log.
11 Answers
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