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How many and which are the uses of “const” in C++?
... compiler help you to decide when and when not you need to copy.
struct MyString {
char * getData() { /* copy: caller might write */ return mData; }
char const* getData() const { return mData; }
};
Explanation: You might want to share data when you copy something as long as the data of th...
ROW_NUMBER() in MySQL
...e about that in the answer a tic ago. You can usually easily drop unwanted extra rows in the application layer afterwards on some random basis, but if you have a lot of rows all with the same col3 it can be problematic.
– bobince
Dec 13 '09 at 0:18
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What is the difference between memmove and memcpy?
... location pointed by the destination. (http://www.cplusplus.com/reference/cstring/memcpy/)
Consider the following examples:
#include <stdio.h>
#include <string.h>
int main (void)
{
char string [] = "stackoverflow";
char *first, *second;
first = string;
second = string...
NSLog the method name with Objective-C in iPhone
...
print(__FUNCTION__) // Swift
NSLog(@"%@", NSStringFromSelector(_cmd)); // Objective-C
Swift 3 and above
print(#function)
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Why would one omit the close tag?
...hp closing tag (?>) is so that the programmer doesn't accidentally send extra newline chars.
The reason you shouldn't leave off the php closing tag is because it causes an imbalance in the php tags and any programmer with half a mind can remember to not add extra white-space.
So for your questi...
Read/Write String from/to a File in Android
...ed from EditText. Then I want the same file to return the inputted text in String form and save it to another String which is to be used later.
...
What are five things you hate about your favorite language? [closed]
...are only a few different error messages and a few different types (Number, String, Object, etc.)
If it wasn't for jQuery, I'd probably still hate it as much as I used to :)
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Variable declaration placement in C
...ation and initialization of a C++ local object then you pay the cost of an extra constructor for nothing. If the no-arg constructor does not exist then again you are not even allowed to separate both!
C99 starts to move C in this same direction.
If you are worried of not finding where local varia...
Most efficient T-SQL way to pad a varchar on the left to a certain length?
...your padding character and @n is the number of characters in the resulting string (assuming you need the padding because you are dealing with a fixed length).
But as I said you should really avoid doing this in your database.
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Why does sizeof(x++) not increment x?
...efit to compile-time resolution of the sizeof() operator when working with strings. If you have a string that is initialized as a quoted string, instead of using strlen(), where the character array comprising the string has to be scanned for the null-terminator at run time, sizeof(quoted_string) is ...