In C, there appear to be differences between various values of zero -- NULL, NUL and 0. I know that the ASCII character '0' evaluates to 48 or 0x30. The NULL pointer is usually defined as: … Or …
I was just trying to see how to check for the null terminating character in the char * array but I failed. I can find the length using the for loop
I have a char that is given from fgets, and I would like to know how I can convert it into a char*. I am sure this has been posted before, but I couldn't find one that was doing quite what I wanted to do.
What is a construct in SQL Server T-SQL that will replace a Char(0), the null character, embedded in a string with its hex code? I.e. … does not return 't0x00t', what does?
How could you remove all characters that are not alphabetic from a string? What about non-alphanumeric? Does this have to be a custom function or are there also more generalizable solutions?
How can I run a MySQL query that selects everything that is not null? It would be something like … Do I just remove the all and go..?
Даже выражение NULL != NULL не будет истинным, ведь нельзя однозначно сравнить одну неизвестность с другой. Кстати, ложным это выражение тоже не будет, потому что при вычислении условий Oracle не ограничивается состояниями ИСТИНА и ЛОЖЬ.
Одна из причин постоянных недоразумений при разработке кода на PL/SQL — особенно для тех программистов, которые перешли к Oracle от других СУБД и языков программирования, — заключается в том, что Oracle интерпретирует пустые строки как значение NULL.
> char array[SIZE] = {0}; Nothing wrong with this. It just assumes that the remaining SIZE-1 elements are also zero, so that's it, job done.
dropdb test 2> /dev/NULL.