Kind of. You can activate the E_NOTICE level in your error reporting. (List of constants here.) Every instance of usage of an undeclared variable will throw an E_NOTICE. The E_STRICT error level will also throw those notices, as well as other hints on how to optimize your code. error_reporting(E_STRICT); Terminating the script If you are … Read more
Use an initializer list: U_U32_F u = { 0xffffffff }; You can set other members than the first one via U_U32_F u = { .f = 42.0 };
Tentative definition is allowed in C but not in C++. A tentative definition is any external data declaration that has no storage class specifier and no initializer. C99 6.9.2/2 A declaration of an identifier for an object that has file scope without an initializer, and without a storage-class specifier or with the storage-class specifier static, … Read more
The key difference is in where the function can be called from: def functions can be called from Python and Cython while cdef function can be called from Cython and C. Both types of functions can be declared with any mixture of typed and untyped arguments, and in both cases the internals are compiled to … Read more
If you really to assign values (as opposed to initialize), you can do it like this: GLfloat coordinates[8]; static const GLfloat coordinates_defaults[8] = {1.0f, 0.0f, 1.0f ….}; … memcpy(coordinates, coordinates_defaults, sizeof(coordinates_defaults)); return coordinates;
This works the same as a normal variable declaration would work: $foo = ‘bar’; // Created a new variable class Foo { function __construct() { $this->foo = ‘bar’; // Created a new variable } } PHP classes are not quite the same as in other languages, where member variables need to be specified as part … Read more
A struct (without a typedef) often needs to (or should) be with the keyword struct when used. struct A; // forward declaration void function( struct A *a ); // using the ‘incomplete’ type only as pointer If you typedef your struct you can leave out the struct keyword. typedef struct A A; // forward declaration … Read more
No, they are not obsolete as this article Get to Know the New C++11 Initialization Forms says in the Class Member Initialization section (emphasis mine): Bear in mind that if the same data member has both a class member initializer and a mem-init in the constructor, the latter takes precedence. In fact, you can take … Read more
When you read List<String> list = new ArrayList<String>(); you get the idea that all you care about is being a List<String> and you put less emphasis on the actual implementation. Also, you restrict yourself to members declared by List<String> and not the particular implementation. You don’t care if your data is stored in a linear … Read more
The short answer is that computing power and resources advanced exponentially between the time that C was defined and the time that Java came along 25 years later. The longer answer… The maximum size of a compilation unit — the block of code that a compiler processes in a single chunk — is going to … Read more