I’m learning C and I’m still not sure if I understood the difference between & and * yet. Allow me to try to explain it: I got these, but then it becomes confusing. So, both funct(*a) and funct(&a) are correct, right? What’s the difference?
There is no difference unless you write something weird like In the first case, the assignment will be to a temporary, and the overall effect will be v1 += v2. In the second case, the assignment will be to v1, so the overall effect will be v1 = v3. In the third case, the assignment won’t be allowed. … Read more
strncasecmp The strcasecmp() function performs a byte-by-byte comparison of the strings s1 and s2, ignoring the case of the characters. It returns an integer less than, equal to, or greater than zero if s1 is found, respectively, to be less than, to match, or be greater than s2. The strncasecmp() function is similar, except that it compares no more than n bytes of s1 and s2…
If you install macports you can install gcc select, and then choose your gcc version. To see your versions use To select a version use
I have a QString in my sources. So I need to convert it to integer without “Kb”. I tried Abcd.toInt() but it does not work.
As per the documentation, these are just synonyms. size() is there to be consistent with other STL containers (like vector, map, etc.) and length() is to be consistent with most peoples’ intuitive notion of character strings. People usually talk about a word, sentence or paragraph’s length, not its size, so length() is there to make … Read more
Best as an out parameter: Called with
I think you’re reading those stats incorrectly. They show that Python is up to about 400 times slower than C++ and with the exception of a single case, Python is more of a memory hog. When it comes to source size though, Python wins flat out. My experiences with Python show the same definite trend … Read more
Possibly: This would read in and ignore everything until EOF. (you can also supply a second argument which is the character to read until (ex: ‘\n’ to ignore a single line). Also: You probably want to do a: std::cin.clear(); before this too to reset the stream state.