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Take a full page screenshot with Firefox on the command-line
...estion was about getting a screenshot from the command line. Sorry, I just read over that. So here is the correct answer:
As of Firefox 57 you can create a screenshot in headless mode like this:
firefox -screenshot https://developer.mozilla.com
Read more in the documentation.
Update 2017-06-15
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Django optional url parameters
...ring but parameter 3 occurring. The URL paragraph will be MUCH harder to read than a single string with multiple optional parameters. Using symbolic constants for the optional parameter substrings would make it very easy to read, and there would be just one URL.
– Bogatyr
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.NET: Which Exception to Throw When a Required Configuration Setting is Missing?
...orsException - despite the misleading MSDN docs) are for errors in saving, reading, etc. of Configuration.
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Converting array to list in Java
...rsion way, it depends on why do you need your List.
If you need it just to read data. OK, here you go:
Integer[] values = { 1, 3, 7 };
List<Integer> list = Arrays.asList(values);
But then if you do something like this:
list.add(1);
you get java.lang.UnsupportedOperationException.
So for ...
Pinging servers in Python
.../bin/ping", "-c1", "-w100", "192.168.0.1"], stdout=subprocess.PIPE).stdout.read()
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Database Design for Tagging
...
"This article" link is dead. I would have liked to read that :(
– mpen
Oct 21 '10 at 0:19
3
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Postgres: INSERT if does not exist already
...og (in the updated area at the bottom) including some links if you want to read more about the details.
– Skyguard
Apr 1 '17 at 16:03
22
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How would you access Object properties from within an object method? [closed]
...t method to pull the name from the database, if it hasn't been retrieved already. This way you are reducing unnecessary calls to the database.
Now let's say you have a private integer counter in your object that counts the number of times the name has been called. You may want to not use the Get me...
Programmatically get the version number of a DLL
...that this is not the best answer to the original question. Don't forget to read more on this page.
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What is :: (double colon) in Python when subscripting sequences?
...on, your boss wants you to select the following elements:
"But How???"... Read on! (We can do this in a 2-step approach)
Step 1 - Obtain subset
Specify the "start index" and "end index" in both row-wise and column-wise directions.
In code:
In [5]: X2 = X[2:9,3:8]
In [6]: X2
Out[6]:
array([[23, 24...