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RAII and smart pointers in C++
... should be anyway), closing the file is taken care of for us. So, our code now looks something like:
File file("/path/to/file");
// Do stuff with file
// No need to close it - destructor will do that for us
This cannot be done in Java since there's no guarantee when the object will be destroyed, ...
C++ Returning reference to local variable
...dies, making the reference returned from the function worthless because it now refers to an object that doesn't exist.
int main()
{
int& p = func1();
/* p is garbage */
}
The second version does work because the variable is allocated on the free store, which is not bound to the lifeti...
What is the difference between a reference type and value type in c#?
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I found it easier to understand the difference of the two if you know how computer allocate stuffs in memory and know what a pointer is.
Reference is usually associated with a pointer. Meaning the memory address where your variable reside is actually holding another memory address of the ...
Sample random rows in dataframe
... sample_frac) have been superseded by slice_sample, though they remain for now.
– Matt_B
Sep 4 at 2:50
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offsetting an html anchor to adjust for fixed header [duplicate]
...on! It seems not to work with IE7. Anyway, I plan to ignore IE7 users from now on...
– user334639
Sep 19 '13 at 15:35
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How to determine if binary tree is balanced?
...IT specialist at a hospital. Trying to move to do some actual programming now. I'm working on binary trees now, and I was wondering what would be the best way to determine if the tree is height-balanced.
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Is object empty? [duplicate]
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This answer now works in all modern browsers; definitely the best one unless you need to support IE8-.
– Brad Koch
Oct 10 '14 at 14:17
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What is null in Java?
...ify:
Uninitialized state
Termination condition
Non-existing object
An unknown value
How is it represented in the memory?
In Java? None of your concern. And it's best kept that way.
Is null a good thing?
This is now borderline subjective. Some people say that null causes many programme...
Does ruby have real multithreading?
I know about the "cooperative" threading of ruby using green threads . How can I create real "OS-level" threads in my application in order to make use of multiple cpu cores for processing?
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Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?
...d your credentials in your SO profile. It took me some digging around. But now that I see that you seem to work on the VM team, I'll accept your answer as the official answer. :)
– Thierry-Dimitri Roy
Mar 11 '11 at 18:03
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