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C++及Windows异常处理(try,catch; __try,__finally, __except) - C/C++ - ...

...ss File_handle { FILE* p; public: File_handle(const char* n, const char* a) { p = fopen(n,a); if (p==0) throw Open_error(errno); } File_handle(FILE* pp) { p = pp; if (p==0) throw Open_error(errno); } ~File_handle() { fclose(p); } ...
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Calling Objective-C method from C++ member function?

...d ); int doSomethingWith( void * aParameter ); void logMyMessage( char * aCStr ); private: void * self; }; #endif Notice the wrapper methods no longer require the void pointer to an instance of MyClass; it is now a private member of MyClassImpl. The init method is used to instantia...
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Are nested HTML comments possible?

...ere. Its parent element has to be either the <body> element or a few select others. – John E Jan 17 '19 at 14:09 add a comment  |  ...
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Getting a File's MD5 Checksum in Java

... byte data[] = org.apache.commons.codec.digest.DigestUtils.md5(fis); char md5Chars[] = Hex.encodeHex(data); String md5 = String.valueOf(md5Chars);` – Dmitry_L Jul 17 '13 at 10:45 ...
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Git 工具 - 子模块(submodule):一个仓库包含另一个仓库 - 开源 & Github -...

.../src/main.c @@ -245,6 +245,8 @@ static int handle_alias(int *argcp, const char ***argv) commit_pager_choice(); + url = url_decode(url_orig); + /* build alias_argv */ alias_argv = xmalloc(sizeof(*alias_argv) * (argc + 1)); alias_argv[0] = alias_string + 1; Ente...
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How to check for a valid Base64 encoded string

...s pretty easy to recognize a Base64 string, as it will only be composed of characters 'A'..'Z', 'a'..'z', '0'..'9', '+', '/' and it is often padded at the end with up to three '=', to make the length a multiple of 4. But instead of comparing these, you'd be better off ignoring the exception, if it o...
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What does void* mean and how to use it?

... Before void pointers were available "char *" was used instead. But void is better as it cannot actually be used to alter anything directly. – user50619 Jun 4 '19 at 13:08 ...
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Maximum MIMEType Length when storing type in DB

...s", type (eg. "application") and subtype (eg "vnd...") both can be max 127 characters. You do the math :) Edit: Meanwhile, that document has been obsoleted by RFC 6838, which does not alter the maximum size but adds a remark: Also note that while this syntax allows names of up to 127 characte...
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generating GUID without hyphen

... is it possible to create a GUID with both Upper and lowercase chars along with numbers??? – Harish Kumar Jan 16 '12 at 8:55 7 ...
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Practical uses of different data structures [closed]

...ght accent at all. You need to understand not just which data structure to select, but some other points to consider when people think about data structures: pros and cons of the common data structures why each data structure exist how it actually work in the memory specific questions/exe...