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What's the difference between array_merge and array + array?

...ruth regarding the OP). 2. See Yehosef's answer about what array_merge actually does... 3. And see BoltClock's answer about another crucial difference not mentioned here: array_merge resets numeric keys, unlike +. – Sz. Sep 20 '18 at 23:31 ...
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“ImportError: No module named” when trying to run Python script

...the notebook to operate from in your ipython_notebook_config.py file (typically using the c.NotebookManager.notebook_dir setting). The solution is to provide the python interpreter with the path-to-your-module. The simplest solution is to append that path to your sys.path list. In your notebook, fi...
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How to overload __init__ method based on argument type?

Let's say I have a class that has a member called data which is a list. 10 Answers 1...
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When to use RSpec let()?

...sn't use any of the instance variables defined in the hook. This isn't usually a big deal, but if the setup of the instance variable takes a long time, then you're wasting cycles. For the method defined by let, the initialization code only runs if the example calls it. You can refactor from a loca...
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How to replace a string in multiple files in linux command line

...is appended to the old file names. So sed -i .bak 's/foo/bar/g' *.xx moves all .xx files to the equivalent .xx.bak name and then generates the .xx files with the foo→bar substitution. – Anaphory Oct 4 '14 at 22:35 ...
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Iterating through a JSON object

..._raw= raw.readlines() json_object = json.loads(json_raw[0]) you should really just do: json_object = json.load(raw) You shouldn't think of what you get as a "JSON object". What you have is a list. The list contains two dicts. The dicts contain various key/value pairs, all strings. When you do j...
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google chrome extension :: console.log() from background page?

If I call console.log('something'); from the popup page, or any script included off that it works fine. 11 Answers ...
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Using DNS to redirect to another URL with a path [closed]

...mail.foo.com" under Properties -> Static Website Hosting, set "redirect all requests to: mail.google.com/a/foo.com" in route53, create an A record "mail.foo.com" enable "alias", and set alias target to the "mail.foo.com" bucket not a pure DNS solution, but it works ;) But be aware of, the redi...
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Why is “while ( !feof (file) )” always wrong?

...ol. The environment truly exists "concurrently" with your program. As with all things concurrent, questions about the "current state" don't make sense: There is no concept of "simultaneity" across concurrent events. Many properties of state simply don't exist concurrently. Let me make this more prec...
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What does asterisk * mean in Python? [duplicate]

...d arguments, defaulting to a new empty dictionary. Also, see Function Calls. Assuming that one knows what positional and keyword arguments are, here are some examples: Example 1: # Excess keyword argument (python 2) example: def foo(a, b, c, **args): print "a = %s" % (a,) print "b = %...