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NULL vs nil in Objective-C
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nil should only be used in place of an id, what we Java and C++ programmers would think of as a pointer to an object. Use NULL for non-object pointers.
Look at the declaration of that method:
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
change:(NSDi...
Remove DEFINER clause from MySQL Dumps
...them after the dump file is created.
Open the dump file in a text editor and replace all occurrences of DEFINER=root@localhost with an empty string ""
Edit the dump (or pipe the output) using perl:
perl -p -i.bak -e "s/DEFINER=\`\w.*\`@\`\d[0-3].*[0-3]\`//g" mydatabase.sql
Pipe the output throug...
Show just the current branch in Git
I tried looking for a special Git command for this, but I couldn't find one. Is there anything shorter or faster than the following?
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How to overlay one div over another div
...gt;
</div>
I would suggest learning about position: relative and child elements with position: absolute.
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How to send email to multiple recipients using python smtplib?
... this script. I was having a problem to send an email from a python script and with this piece of code, i can now send the email.
– fear_matrix
Jul 14 '15 at 10:36
7
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Creating a new column based on if-elif-else condition
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Thank you, I am beginning with pandas and this was very helpful +1
– nutship
Feb 12 '14 at 8:18
4
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Configuring Log4j Loggers Programmatically
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Logger.getRootLogger().getLoggerRepository().resetConfiguration();
and start with adding your own. You need log4j in the classpath of course for this to work.
Remark:
You can take any Logger.getLogger(...) you like to add appenders. I just took the root logger because it is at the bottom of...
how to remove css property using javascript?
...whatever follows from the definitions set in the stylesheets (through link and style tags). So this syntax will only modify the local style of this element.
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presentViewController and displaying navigation bar
I have a view controller hierarchy and the top-most controller is displayed as a modal and would like to know how to display the navigation bar when using
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Lightweight Javascript DB for use in Node.js [closed]
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I'm only familiar with Mongo and Couch, but there's also one named Persistence.
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