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What is the difference between Type and Class?
... and objects of different classes can
have the same type.
//example in c++
template<typename T>
const T & max(T const & a,T const &b)
{
return a>b?a:b; //> operator of the type is used for comparison
}
max function requires a type with operation > with its own type...
“var” or no “var” in JavaScript's “for-in” loop?
...
is a commonly seen pattern but it's different from
for(int i; ...)
in C++ in that that the variable isn't scoped to the for block. In fact, the var gets hoisted to the top of the enclosing scope (function) so a local i will be effectively available both before the for loop (after the beginning...
GoogleTest: How to skip a test?
Using Google Test 1.6 (Windows 7, Visual Studio C++). How can I turn off a given test? (aka how can I prevent a test from running). Is there anything I can do besides commenting out the whole test?
...
Is there a point to minifying PHP?
...acebook introduced a compiler named HipHop that transforms PHP source into C++ code. Rasmus Lerdorf, one of the big PHP guys did a presentation for Digg earlier this year that covers the performance improvements given by HipHop. In short, it's not too much faster than optimizing code and using a b...
When should I make explicit use of the `this` pointer?
...of code. Such as:
Student st;
st.SetAge (21).SetGender (male).SetClass ("C++ 101");
Some consider this consise, others consider it an abomination. Count me in the latter group.
3) No Alternative: To resolve names in dependant types. This comes up when using templates, as in this example:
#in...
Swift - which types to use? NSString or String
... talked about at WWDC. In the past everyone worried about performance used C++ string and containers to get static dispatching.
– Lothar
Jun 4 '14 at 13:38
add a comment
...
Gcc error: gcc: error trying to exec 'cc1': execvp: No such file or directory
...s and converts them to assembly. It's the actual part that compiles C. For C++, there's cc1plus, and other internal commands for different languages.
taken from this answer by Alan Shutko.
Solution for: Ubuntu / Linux Mint
sudo apt-get update
sudo apt-get install --reinstall build-essential
Soluti...
How to change int into int64?
...was doing (int64)i, it din't work, old habit from clang. This reverse from C++ worked.
– Manohar Reddy Poreddy
Jul 29 '15 at 9:35
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How to make a JTable non-editable
...Table(my_rows, my_header);
for (int c = 0; c < table.getColumnCount(); c++)
{
Class<?> col_class = table.getColumnClass(c);
table.setDefaultEditor(col_class, null); // remove editor
}
Without editors, data will be not editable.
...
Meaning of = delete after function declaration
...
Deleting a function is a C++11 feature:
The common idiom of "prohibiting copying" can now be expressed
directly:
class X {
// ...
X& operator=(const X&) = delete; // Disallow copying
X(const X&) = delete;
};
[......