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Is null reference possible?

... @Karl well in C++, "dereferencing" doesn't mean to read a value. Some people think "dereference" means to actually access or modify the stored value, but that's not true. The logic is that C++ says that an lvalue refers to "an object or function". If that is so, then the ques...
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Determine if a sequence contains all elements of another sequence using Linq [duplicate]

...ptimize "pure" queries, without Lambda expressions in them. Still like the readability of mine though :-) – Anders Nov 21 '11 at 16:53 ...
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Loading and parsing a JSON file with multiple JSON objects

... objects with delimiters in-between, use How do I use the 'json' module to read in one JSON object at a time? to parse out individual objects using a buffered method. share | improve this answer ...
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knitr Markdown highlighting in Emacs?

... problem First of all, you say you have GNU Emacs 23.3.1, but in polymode readme.md, it reads: Tested with Emacs 24.3.1 and 24.4.5. As for your error: "Cannot open load file: color", in polymode.el, there is the line: (require 'color) this package is in Emacs 24, but it might well miss in...
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How to unzip a list of tuples into individual lists? [duplicate]

... Clever.... perhaps too clever. Anyone reading this without surrounding comments will scratch their head for some time. – speedplane Aug 26 '16 at 16:58 ...
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How to use java.net.URLConnection to fire and handle HTTP requests?

... break; } } if (charset != null) { try (BufferedReader reader = new BufferedReader(new InputStreamReader(response, charset))) { for (String line; (line = reader.readLine()) != null;) { // ... System.out.println(line) ? } } ...
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Is there a command to list all Unix group names? [closed]

...etent group The reason is that on networked systems, groups may not only read from /etc/group file, but also obtained through LDAP or Yellow Pages (the list of known groups comes from the local group file plus groups received via LDAP or YP in these cases). If you want just the group names you ca...
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Should CSS always preceed Javascript?

...<link href="...">s before my JS <script src="...">s because "I read one time that it's better." So, you're right; it's high time we do some actual research! I set up my own test harness in Node (code below). Basically, I: Made sure there was no HTTP caching so the browser would have...
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What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?

... AT&T and Bell Labs researcher and programmer, Andrew Koenig. Further reading: Herb Sutter's Name Lookup on GotW Standard C++03/11 [basic.lookup.argdep]: 3.4.2 Argument-dependent name lookup. 1 The definition of Koenig lookup is as defined in Josuttis' book, The C++ Standard Library: A T...
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What is in your Mathematica tool bag? [closed]

..., GatherBy would produce the same result.) In this case, the points are already in a form that I will use, but I only need a representative point from each grouping and I'd like a count of the equivalent points. Since, I don't need to transform each point, I use the Identity function in the second...