As other answers have pointed out, Haskell tends to use different vocabulary. However, I don’t think they’ve explained the reason for the difference very well. In a language like Java, functions are not “first class citizens”; it’s true that anonymous functions are available in the latest versions, but this style of interface (Collection, Indexable, Interable, … Read more
There are a number of reasons why this a bad idea. First, this is a bad idea because the standard containers do not have virtual destructors. You should never use something polymorphically that does not have virtual destructors, because you cannot guarantee cleanup in your derived class. Basic rules for virtual dtors Second, it is … Read more
PyCharm is lying to you. The source code you’re looking at is a fake that PyCharm has created. PyCharm knows what functions should be there, and it can guess at their signatures using the function docstrings, but it has no idea what the function bodies should look like. If you want to see the real … Read more
From § 18.4.1 [cstdint.syn] of the C++0x FDIS (N3290), int8_t is an optional typedef that is specified as follows: namespace std { typedef signed integer type int8_t; // optional //… } // namespace std § 3.9.1 [basic.fundamental] states: There are five standard signed integer types: “signed char”, “short int”, “int”, “long int”, and “long long … Read more
Its the implementation of Standard C library described in C standards plus some extra useful stuffs which are not strictly standard but used frequently. Its main contents are : 1) C library described in ANSI,c99,c11 standards. It includes macros, symbols, function implementations etc.(printf(),malloc() etc) 2) POSIX standard library. The “userland” glue of system calls. (open(),read() … Read more
chr() is what you’re looking for: print chr(65) # will print “A”
Short story: overload when you can, specialise when you need to. Long story: C++ treats specialisation and overloads very differently. This is best explained with an example. template <typename T> void foo(T); template <typename T> void foo(T*); // overload of foo(T) template <> void foo<int>(int*); // specialisation of foo(T*) foo(new int); // calls foo<int>(int*); Now … Read more
Your code, as written, works. You’re probably trying to achieve something unrelated, but similar: std::string c = “hello” + “world”; This doesn’t work because for C++ this seems like you’re trying to add two char pointers. Instead, you need to convert at least one of the char* literals to a std::string. Either you can do … Read more
POSIX is a superset of the standard C library, and it’s important to note that it defers to it. If C and POSIX is ever in conflict, C wins. Sockets, file descriptors, shared memory etc. are all part of POSIX, but do not exist in the C library. pthread.h is used for POSIX threads and … Read more
Deprecated Functions Insecure A perfect example of such a function is gets(), because there is no way to tell it how big the destination buffer is. Consequently, any program that reads input using gets() has a buffer overflow vulnerability. For similar reasons, one should use strncpy() in place of strcpy() and strncat() in place of … Read more