Since ldd lists only the dynamic libraries, is there a way to extract the information about the static libraries used to create the executable? Answer ldd <exe filename> shows dynamically linked libraries nm <exe filename> shows the symbols in the file. To see which symbols come from static libraries requires running nm against those libraries … Read more
In Java, it’s taught that variables should be kept private to enable better encapsulation, but what about static constants? This: public static final int FOO = 5; Would be equivalent in result to this: private static final int FOO = 5; … public static getFoo() { return FOO; } But which is better practice? Answer … Read more
I am really confused with the real meaning of the static keyword in C#. I have gone through different articles on internet but none of them are really helping me to understand it’s meaning and other sources are not trusted. I know Stack Overflow has some brilliant minds who can help me understand the real … Read more
Can I control the order static objects are being destructed? Is there any way to enforce my desired order? For example to specify in some way that I would like a certain object to be destroyed last, or at least after another static object? Answer The static objects are destructed in the reverse order of … Read more
I’ve read Java does not support static local variables unlike C/C++. Now if I want to code a function with a local variable, whose value should persist between function calls, how do I do that? Should I resort to using instance variables? Answer You can have a static class variable, which will be preserved across … Read more
Referring to the first answer about python’s bound and unbound methods here, I have a question: class Test: def method_one(self): print “Called method_one” @staticmethod def method_two(): print “Called method_two” @staticmethod def method_three(): Test.method_two() class T2(Test): @staticmethod def method_two(): print “T2” a_test = Test() a_test.method_one() a_test.method_two() a_test.method_three() b_test = T2() b_test.method_three() produces output: Called method_one Called … Read more
I want to create a kind of utility class which contains only static methods which are callable by the name class prefix. Looks like I’m doing something wrong 🙂 Here is my small class: class FileUtility(): @staticmethod def GetFileSize(self, fullName): fileSize = os.path.getsize(fullName) return fileSize @staticmethod def GetFilePath(self, fullName): filePath = os.path.abspath(fullName) return filePath Now … Read more
I have recently done an update to PHP 5.4, and I get an error about static and non-static code. This is the error: PHP Strict Standards: Non-static method VTimer::get() should not be called statically in /home/jaco/public_html/include/function_smarty.php on line 371 This is the line 371: $timer = VTimer::get($options[‘magic’]); I hope somebody can help. Answer That means … Read more
I can’t understand, why if we define static variable of usual (non-template) class in header, we have linker error, but in case of templates all works fine and moreover we will have single instance of static variable among all translation units: It’s template header (template.h): // template.h template<typename T> class Templ { public: static int … Read more
In the example code void foo() { static Bar b; … } compiled with GCC is it guaranteed that b will be created and initialized in a thread-safe manner ? In gcc’s man page, found the -fno-threadsafe-statics command line option: Do not emit the extra code to use the routines specified in the C++ ABI … Read more
