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How to forward declare a template class in namespace std?
... main. I get errors. Of course, I know that there are more template params for std::list (allocator I think). But, that is beside the point. Do I have to know the full template declaration of a template class to be able to forward declare it?
...
How to get instance variables in Python?
...lt-in method in Python to get an array of all a class' instance variables? For example, if I have this code:
10 Answers
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How to read a large file line by line?
...
How does this account for the too large to open in memory part?
– Starx
Nov 6 '12 at 7:53
66
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How can I find a specific element in a List?
...= list.Find(x => x.GetId() == "xy");
Note: C# has a built-in syntax for properties. Instead of writing getter and setter methods (as you might be used to from Java), write
private string _id;
public string Id
{
get
{
return _id;
}
set
{
_id = value;
}
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Private properties in JavaScript ES6 classes
...can those class fields work. You can't currently use this in constructor before you call super(). Yet babel puts them before super.
– seeker_of_bacon
Oct 3 '18 at 16:23
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Immutability of Strings in Java
...change what it points to, but not that which it points at.
Take this code, for example:
String s1 = "Hello";
String s2 = s1;
// s1 and s2 now point at the same string - "Hello"
Now, there is nothing1 we could do to s1 that would affect the value of s2. They refer to the same object - the string "He...
Use of 'prototype' vs. 'this' in JavaScript?
...
The examples have very different outcomes.
Before looking at the differences, the following should be noted:
A constructor's prototype provides a way to share methods and values among instances via the instance's private [[Prototype]] property.
A function's this is se...
What is the most robust way to force a UIView to redraw?
...ceeds to do the following. from method viewDidLoad I fire off a URLRequest for data that is required by on of my subviews - a UIView subclass with drawRect overridden. When the data arrives from the cloud I start building my view hierarchy. the subclass in question gets passed the data and it's draw...
super() raises “TypeError: must be type, not classobj” for new-style class
...n old-style class".
However, the important point is that the correct test for "is this a new-style instance (i.e. object)?" is
>>> class OldStyle: pass
>>> instance = OldStyle()
>>> issubclass(instance.__class__, object)
False
and not (as in the question):
>>>...
ExpressJS How to structure an application?
I'm using the ExpressJS web framework for NodeJS.
21 Answers
21
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