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What is the difference between const_iterator and non-const iterator in the C++ STL?
...};
std::vector<int>::const_iterator cit = v.begin();
// Compile time error: cannot modify container with const_iterator.
//*cit = 1;
As shown above, v.begin() is const overloaded, and returns either iterator or const_iterator depending on the const-ness of the container variable:
How does ...
How to wait for a keypress in R?
...hod is that if you type something that is not a number, it will display an error.
print ("Press [enter] to continue")
number <- scan(n=1)
Wrapping into a function:
readkey <- function()
{
cat("[press [enter] to continue]")
number <- scan(n=1)
}
Method 3
Imagine you want to wa...
Differences and relationship between glActiveTexture and glBindTexture
...GL_TEXTURE_2D; attempting to bind it as GL_TEXTURE_1D will give rise to an error (while run-time).
Once the object is bound, its state can be changed. This is done via generic functions specific to that object. They too take a location that represents which object to modify.
In C/C++, this looks l...
How to reverse a singly linked list using only two pointers?
...
I'm not sure about 'obvious errors' in the original. Design-wise, not passing the head of the list in and not returning the new head is a bad idea. The only bug, though, is the last line in the reverse() function should be setting first, I believe. O...
Installing Java on OS X 10.9 (Mavericks)
...JAVA_HOME in the terminal.
Open your Terminal
java -version gives you an error and a popup
Get the JRE dmg on http://www.oracle.com/technetwork/java/javase/downloads/index.html
Install it
In your terminal, type: export JAVA_HOME="/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home"
ja...
What is the proper way to test if a parameter is empty in a batch file?
...s in the argument, otherwise you will get a …was unexpected at this time error.
– Synetech
Feb 4 '13 at 19:41
14
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Convert RGB to RGBA over white
...number a, but the problem is to find a number for which the discretization error is minimal.
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Dots in URL causes 404 with ASP.NET mvc and IIS
... allowed me to catch the url /WEB-INF./web.xml and redirect it to a custom error page when very many other ways I tried did not work.
– quentin-starin
Oct 9 '13 at 15:58
3
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WPF Button with Image
...
if use this button then you have this error"a value of type 'datagridtextcolumn' cannot be added to a collection or dictionary of type observablecollection" or Similar error you shoud add style …> <DataGrid.Resources> ...
How do I break out of a loop in Perl?
...loop, but since I'm also using strict subs in my Perl code, I'm getting an error saying:
5 Answers
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