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How many characters can UTF-8 encode?

... bytes to encode. This covers the remainder of almost all Latin alphabets, and also Greek, Cyrillic, Coptic, Armenian, Hebrew, Arabic, Syriac and Tāna alphabets, as well as Combining Diacritical Marks. Three bytes are needed for characters in the rest of the Basic Multilingual Plane, which con...
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What's the result of += in C and C++?

... Semantics of the compound assignment operators is different in C and C++: C99 standard, 6.5.16, part 3: An assignment operator stores a value in the object designated by the left operand. An assignment expression has the value of the left operand after the assignment, but is not an ...
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`levels

...answers here are good, but they are missing an important point. Let me try and describe it. R is a functional language and does not like to mutate its objects. But it does allow assignment statements, using replacement functions: levels(x) <- y is equivalent to x <- `levels<-`(x, y) ...
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How do you stash an untracked file?

I have changes to a file, plus a new file, and would like to use git stash to put them away while I switch to another task. But git stash by itself stashes only the changes to the existing file; the new file remains in my working tree, cluttering up my future work. How do I stash this untracked fi...
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Table name as variable

... For static queries, like the one in your question, table names and column names need to be static. For dynamic queries you should generate the full SQL dynamically, and use sp_executesql to execute it. Here is an example of a script used to compare data between the same tables of diff...
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How do you copy and paste into Git Bash

... to copy from the window, try clicking the console's window icon (topleft) and choosing Edit -> Mark, then drag a box on the text, then press Enter. (You can also paste via the window icon menu, but the key is faster.) UPDATE Starting from Windows 10 the CTRL + C, CTRL + V and a lot of other fe...
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Python 3 turn range to a list

...gh since you can come by the value of my_list[i] more efficiently (i + 1), and if you just need to iterate over it, you can just fall back on range. Also note that on python2.x, xrange is still indexable1. This means that range on python3.x also has the same property2 1print xrange(30)[12] works ...
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How to allocate aligned memory only using the standard library?

I just finished a test as part of a job interview, and one question stumped me, even using Google for reference. I'd like to see what the StackOverflow crew can do with it: ...
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Removing projects in Sublime Text 2 and 3

How do you remove a project from Sublime Text 2 and 3's project windows ( Ctrl + Alt + P ) ? 5 Answers ...
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The import android.support cannot be resolved

...g to run the code provided HERE I downloaded the code from their Github and imported into Android SDK, but it shows error at the lines ...