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#include in .h or .c / .cpp?
When coding in either C or C++, where should I have the #include 's?
4 Answers
4
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Sort Go map values by keys
...and value) looks a bit familiar, that code template is not terribly unlike C++ templates.
Clojure and other languages support sorted maps as fundamental data types.
While I don't know of any way Go makes range a first-class type such that it could be substituted with a custom ordered-range (in place...
Example JavaScript code to parse CSV data
...e returned array)
for (var row = 0, col = 0, c = 0; c < str.length; c++) {
var cc = str[c], nc = str[c+1]; // Current character, next character
arr[row] = arr[row] || []; // Create a new row if necessary
arr[row][col] = arr[row][col] || ''; // Crea...
What platforms have something other than 8-bit char?
...worth giving consideration" to something as it is playing by the rules. In C++, for example, the standard says all bytes will have "at least" 8 bits. If your code assumes that bytes have exactly 8 bits, you're violating the standard.
This may seem silly now -- "of course all bytes have 8 bits!", I ...
Implementing comparison operators via 'tuple' and 'tie', a good idea?
(Note: tuple and tie can be taken from Boost or C++11.)
When writing small structs with only two elements, I sometimes tend to choose a std::pair , as all important stuff is already done for that datatype, like operator< for strict-weak-ordering.
The downsides though are the pretty much us...
When can I use a forward declaration?
...needs to include the dependencies (s)he actually uses, so this follows the C++ principle of "you only pay for what you use". But indeed, it can be inconvenient for the user who would expect the header to be standalone.
– Luc Touraille
Jul 8 '13 at 11:45
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Get the IP address of the machine
... MYPUBLICIP then you can include code like (this is C, feel free to create C++ from it):
#define MYPUBLICIPENVVAR "MYPUBLICIP"
const char *mypublicip = getenv(MYPUBLICIPENVVAR);
if (!mypublicip) { fprintf(stderr, "please set environment variable %s\n", MYPUBLICIPENVVAR); exit(3); }
So you can c...
Default initialization of std::array?
With C++11 std::array , do I have the guarantee that the syntax std::array<T, N> x; will default-initialize all the elements of the array ?
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Does every Javascript function have to return a value?
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I don't believe C++ (or C) "returns a void". The "void" tag indicates it does not return anything. It's a minor point though and has nothing to do with the question asked.
– Jay
Mar 3 '15 at 17:02
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Should I use static_cast or reinterpret_cast when casting a void* to whatever
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