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How can I setup & run PhantomJS on Ubuntu?

... to add one additional symlink to /usr/bin/, and I did direct symlinks for all 3 - see below. I'm installing on Ubuntu server Natty Narwhal. This is exactly what I did. cd /usr/local/share sudo wget https://bitbucket.org/ariya/phantomjs/downloads/phantomjs-1.9.7-linux-x86_64.tar.bz2 sudo tar xjf ...
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How to reshape data from long to wide format

... The reshape comments and similar argument names aren't all that helpful. However, I have found that for long to wide, you need to provide data = your data.frame, idvar = the variable that identifies your groups, v.names = the variables that will become multiple columns in wide f...
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How can I profile Python code line-by-line?

... can anyone show how to actually use this library? The readme teaches how to install, and answers various FAQs, but doesn't mention how to use it after a pip install.. – cryanbhu Jul 25 '18 at 3:28 ...
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How to get the currently logged in user's user id in Django?

...rs = [{user.id: user.get_name()} for user in logged_in_users] # Query all logged in staff users based on id list all_staff_users = CustomUser.objects.filter(is_resident=False, is_active=True, is_superuser=False) logged_out_users = list() # for some reason exclude() would not work co...
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How to read and write INI file with Python3?

... The standard ConfigParser normally requires access via config['section_name']['key'], which is no fun. A little modification can deliver attribute access: class AttrDict(dict): def __init__(self, *args, **kwargs): super(AttrDict, self).__init...
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Selenium: FirefoxProfile exception Can't load the profile

... Update: Selenium team fixed in latest version. For almost all environments the fix is: pip install -U selenium Unclear at which version it was fixed (apparently r13122), but certainly by 2.26.0 (current at time of update) it is fixed. This error means that _wait_until_conn...
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What is the fastest integer division supporting division by zero no matter what the result is?

...x, int y) { y += y == 0; return x/y; } The compiler basically recognizes that it can use a condition flag of the test in the addition. As per request the assembly: .globl f .type f, @function f: pushl %ebp xorl %eax, %eax movl %esp, %ebp movl 12(%...
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How to include jar files with java file and compile in command prompt

...ing/executing any java file. You will not have to include the jars individually every time you compile you file. Different machines have different methods to set the classpath as an environment variable. The commands for Windows, Linux, etc are different. You can find more details in this blog. ...
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Preferred method to store PHP arrays (json_encode vs serialize)

...ciative array of data in a flat file for caching purposes. I might occasionally come across the need to convert it to JSON for use in my web app but the vast majority of the time I will be using the array directly in PHP. ...
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What is the purpose of std::make_pair vs the constructor of std::pair?

... Actually, the types should be deduced at compile time without the need to specify. – Chad Feb 14 '12 at 1:51 ...