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How to find memory leak in a C++ code/project?
...you allocated:
char* str = new char [30]; // Allocate 30 bytes to house a string.
delete [] str; // Clear those 30 bytes and make str point nowhere.
2
Reallocate memory only if you've deleted. In the code below, str acquires a new address with the second allocation. The first address is lost ir...
SQL Server: converting UniqueIdentifier to string in a case statement
...flow.com%2fquestions%2f6299918%2fsql-server-converting-uniqueidentifier-to-string-in-a-case-statement%23new-answer', 'question_page');
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Is Python strongly typed?
...typing means that the type of a value doesn't change in unexpected ways. A string containing only digits doesn't magically become a number, as may happen in Perl. Every change of type requires an explicit conversion.
Dynamic typing means that runtime objects (values) have a type, as opposed to stati...
Error: free(): invalid next size (fast):
...ng to allocate space for an array of pointers, such as
char** my_array_of_strings; // or some array of pointers such as int** or even void**
then you will need to consider word size (8 bytes in a 64-bit system, 4 bytes in a 32-bit system) when allocating space for n pointers. The size of a poin...
What's the difference between __PRETTY_FUNCTION__, __FUNCTION__, __func__?
... in C++11, where it is specified as containing "an implementation-defined string" (C++11 §8.4.1[dcl.fct.def.general]/8), which is not quite as useful as the specification in C. (The original proposal to add __func__ to C++ was N1642).
__FUNCTION__ is a pre-standard extension that some C compilers ...
Resolve build errors due to circular dependency amongst classes
...o handle the forward declarations. The only "disadvantage" would be in the extra files. I assume you always include a.fwd.h in a.h, to assure they stay in sync. The example code is missing where these classes are used. a.h and b.h will both need to be included since they won't function in isolatio...
What is the string length of a GUID?
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It depends on how you format the Guid:
Guid.NewGuid().ToString() => 36 characters (Hyphenated)
outputs: 12345678-1234-1234-1234-123456789abc
Guid.NewGuid().ToString("D") => 36 characters (Hyphenated, same as ToString())
outputs: 12345678-1234-1234-1234-123456789abc
Guid.New...
Why can Java Collections not directly store Primitives types?
...tion of primitives. Even in the few cases where I might have wanted to the extra time and space costs of using the reference objects has been negligible. In particular I find that many people think they want Map<int,T>, forgetting that an array will do that trick very nicely.
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How to change the CHARACTER SET (and COLLATION) throughout a database?
...DEFAULT is not null, CONCAT(' DEFAULT \'', COLUMN_DEFAULT, '\''), ''), if (EXTRA != '', CONCAT(' ', EXTRA), '')))), ';') as alter_statement
FROM information_schema.columns a
INNER JOIN INFORMATION_SCHEMA.TABLES b ON a.TABLE_CATALOG = b.TABLE_CATALOG
AND a.TABLE_SCHEMA = b.TABLE_SCHEM...
What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?
...e in the C++ community(particularly ##c++ on freenode) resent the use of wstrings and wchar_t , and their use in the windows api. What is exactly "wrong" with wchar_t and wstring , and if I want to support internationalization, what are some alternatives to wide characters?
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