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How to hide output of subprocess in Python 2.7
... use os.devnull if subprocess.DEVNULL is not available (<3.3), use check_call() instead of call() if you don't check its returned code, open files in binary mode for stdin/stdout/stderr, usage of os.system() should be discouraged, &> doesn't work for sh on Ubuntu an explicit >/dev/null ...
Linking to an external URL in Javadoc?
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I recommend <a href="http://google.com" target="_top">http://google.com</a>. The reason for adding target="_top" is because some of the generated javadoc html files make use of frames, and you probably want the navigation to affect the whole page rather than just...
How to Get the Title of a HTML Page Displayed in UIWebView?
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WKWebView has 'title' property, just do it like this,
func webView(_ wv: WKWebView, didFinish navigation: WKNavigation!) {
title = wv.title
}
I don't think UIWebView is suitable right now.
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Error java.lang.OutOfMemoryError: GC overhead limit exceeded
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}
System.out.printf("Done.%n");
}
}
Using Java 1.6.0_24-b07 on a Windows 7 32 bit.
java -Xloggc:gc.log GarbageCollector
Then look at gc.log
Triggered 444 times using BAD method
Triggered 666 times using WORSE method
Triggered 354 times using BETTER method
Now granted, ...
JavaScript, elegant way to check nested object properties for null/undefined [duplicate]
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I wish lodash would and a function for this._.has is the closest but doesn't check the value.
– GFoley83
Jul 28 '16 at 2:55
7
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What is a callback function?
...ant is to be able to call factorial in the following way:
factorial(really_big_number, what_to_do_with_the_result)
The second parameter, what_to_do_with_the_result, is a function you send along to factorial, in the hope that factorial will call it on its result before returning.
Yes, this means...
How to get a specific output iterating a hash in Ruby?
...@huzefabiyawarwala No, ? is not a valid variable name in Ruby. You can use _, but you don't need to.
– sepp2k
Mar 16 '16 at 13:04
2
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Permission denied (publickey) when SSH Access to Amazon EC2 instance [closed]
...lso happen if you have messed up the /home/<username>/.ssh/authorized_keys file on your EC2 instance.
About 2., the information about which username you should use is often lacking from the AMI Image description. But you can find some in AWS EC2 documentation, bullet point 4. :
http://docs....
Write to UTF-8 file in Python
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I believe the problem is that codecs.BOM_UTF8 is a byte string, not a Unicode string. I suspect the file handler is trying to guess what you really mean based on "I'm meant to be writing Unicode as UTF-8-encoded text, but you've given me a byte string!"
Try writin...
Do regular expressions from the re module support word boundaries (\b)?
...;> x = 'one two three'
>>> y = k.search( x)
>>> y
<_sre.SRE_Match object at 0x100418850>
Also forgot to mention, you should be using raw strings in your code
>>> x = 'one two three'
>>> y = re.search(r"\btwo\b", x)
>>> y
<_sre.SRE_Match obj...