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Why do I get “unresolved external symbol” errors when using templates? [duplicate]
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@jbx I'm saying that for things like basic_string<T> you're only ever going to be using it with char or wchar_t so if putting all the implementation in the header is a concern, instantiating it in the cpp is an option. The code is yours to command, not vice-ve...
Thou shalt not inherit from std::vector
...ector will not be copied. The same would be true of calling swap through a base pointer/reference. I tend to think any kind of inheritance hierarchy that risks object slicing is a bad one.
– stinky472
Sep 30 '12 at 22:14
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Why don't structs support inheritance?
...ings happen, as can be seen in C++.
Consider this pseudo-C# code:
struct Base
{
public int A;
}
struct Derived : Base
{
public int B;
}
void Square(Base[] values)
{
for (int i = 0; i < values.Length; ++i)
values [i].A *= 2;
}
Derived[] v = new Derived[2];
Square (v);
By nor...
How can I get the full/absolute URL (with domain) in Django?
...n your INSTALLED_APPS, it won't hit the DB at all, and provide information based on the Request object (see get_current_site)
– Darb
Jan 31 '12 at 10:04
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Looping over arrays, printing both index and value
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INDEX=0
for i in $list; do
echo ${INDEX}_$i
let INDEX=${INDEX}+1
done
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Get the index of the object inside an array, matching a condition
...ave some kind of hidden iteration, with lodash this becomes:
var index = _.findIndex(array, {prop2: 'yutu'})
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How to sort an array based on the length of each element?
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Based on Salman's answer, I've written a small function to encapsulate it:
function sortArrayByLength(arr, ascYN) {
arr.sort(function (a, b) { // sort array by length of text
if (ascYN) return ...
What Android tools and methods work best to find memory/resource leaks? [closed]
...ns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/RootView"
>
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Then, on the onDestroy() method of your Activity, call the unbindDrawables() method passing a refence to the ...
Better way to shuffle two numpy arrays in unison
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We can now construct a single array containing all the data:
c = numpy.c_[a.reshape(len(a), -1), b.reshape(len(b), -1)]
# array([[ 0., 1., 2., 3., 4., 5., 0., 1.],
# [ 6., 7., 8., 9., 10., 11., 2., 3.],
# [ 12., 13., 14., 15., 16., 17., 4., 5.]])...
C#对象序列化与反序列化 - 更多技术 - 清泛网移动版 - 专注C/C++及内核技术
... public Programmer(string name, bool sex, string language)
: base(name, sex)
{
this.Language = language;
}
public override string ToString()
{
return base.ToString() + "\t编程语言：" + this.Language;
}
}
...