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What are the differences between a pointer variable and a reference variable in C++?
I know references are syntactic sugar, so code is easier to read and write.
41 Answers
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Javascript when to use prototypes
...ultiple Car() instances.
var volvo = new Car(),
saab = new Car();
Now, you know each car will need to drive, turn on, etc. Instead of attaching a method directly to the Car() class (which takes up memory per each instance created), you can attach the methods to the prototype instead (creat...
Is there a way to cause git-reflog to show a date alongside each entry?
... The problem with this is that %gd doesn't show the same date as @{now} does. When searching the reflog, knowing the exact time can be really important ("I know it was in the right state at 8:57" for example).
– ErikE
Jul 21 '15 at 19:50
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Does const mean thread-safe in C++11?
...ration --at least not in respect to data races--.
Does that mean const is now the equivalent of Java's synchronized?
No. Not at all...
Consider the following overly simplified class representing a rectangle:
class rect {
int width = 0, height = 0;
public:
/*...*/
void set_size( int ne...
How to create a drop shadow only on one side of an element?
... fiddle and you will still see shadow all the way up the sides and also it now doesn't make it all the way across the bottom. how far are you willing to go on the spread parameter to get rid of the sides? Also, probably best for someone with 151 rep to not edit the answer of someone with 7k rep. ...
How to securely store access token and secret in Android?
...instead of the actual username password:
Third party apps don't need to know the password and the user can be sure that they only send it to the original site (Facebook, Twitter, Gmail, etc.)
Even if someone steals a token, they don't get to see the password (which the user might be using on other...
How to increment a pointer address and pointer's value?
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@Lundin Hi, is the answer above corrected now? Thanks.
– Unheilig
Mar 11 '14 at 22:51
4
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Add regression line equation and R^2 on graph
... parse = TRUE) +
geom_point()
p
@shabbychef Now it is possible to match the variables in the equation to those used for the axis-labels. To replace the x with say z and y with h one would use:
p <- ggplot(data = df, aes(x = x, y = y)) +
geom_smooth(method = "lm"...
client secret in OAuth 2.0
... is even part in the spec that distributed apps should not use this token. Now you might ask, but XYZ requires it in order to work. In that case they are not implementing the spec properly and you should A not use that service (not likely) or B try to secure token using some obfuscating methods to m...
How can I know which parts in the code are never used?
... returns or conditions that always evaluate to true)
there is no option I know of to warn about unused catch blocks, because the compiler generally cannot prove that no exception will be thrown.
For the second kind, it's much more difficult. Statically it requires whole program analysis, and even ...