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Why can I use auto on a private type?
...ublic: typedef Bar return_type_from_Baz; to the class Foo in the question. Now the type can be identified by a public name, despite being defined in a private section of the class.
– Steve Jessop
Nov 23 '12 at 16:36
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Creating an abstract class in Objective-C
I'm originally a Java programmer who now works with Objective-C. I'd like to create an abstract class, but that doesn't appear to be possible in Objective-C. Is this possible?
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Why are C++ inline functions in the header?
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don't worry, I get why it is now... though I am not sure who really answered this one. A combination of yours and @Xanatos's answer explained it for me.
– thecoshman
Feb 20 '11 at 12:51
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How do you declare an interface in C++?
...that the compiler can, theoretically, see that vtable has no valid members now, and discard it altogether. With a virtual destructor with a body, said destructor can be called (virtually) e.g. in the middle of construction via this pointer (when constructed object is still of Parent type), and there...
What's the difference between dynamic (C# 4) and var?
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var is static typed - the compiler and runtime know the type - they just save you some typing... the following are 100% identical:
var s = "abc";
Console.WriteLine(s.Length);
and
string s = "abc";
Console.WriteLine(s.Length);
All that happened was that the compiler f...
Where is the syntax for TypeScript comments documented?
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The right syntax is now the one used by TSDoc. It will allow you to have your comments understood by Visual Studio Code or other documentation tools.
A good overview of the syntax is available here and especially here. The precise spec should b...
Determine if a sequence contains all elements of another sequence using Linq [duplicate]
...nimum iteration even for methods with lambda expressions, such as OrderBy. Now, what you do inside those lambda expressions could be highly inefficient, but that is on you :-) I like the readability of yours too; I am considering adding your extension method with the Except implementation to get the...
How do I provide custom cast support for my class?
...er, if you use:
object name = "Test";
Role role = (Role) name;
You will now get an InvalidCastException because string cannot be cast to Role, why, the compiler only looks for implicit/explicit casts at compile time based upon their compiled type. In this case the compiler sees name as an object ...
Scatter plot and Color mapping in Python
...here is a reference page of colormaps showing what each looks like. Also know that you can reverse a colormap by simply calling it as cmap_name_r. So either
plt.scatter(x, y, c=t, cmap=cm.cmap_name_r)
# or
plt.scatter(x, y, c=t, cmap="cmap_name_r")
will work. Examples are "jet_r" or cm.plasma_...
When should the volatile keyword be used in C#?
...ode still in production environments and the devs that maintain it should know why that keyword is there and if its safe to remove.
– Paul Easter
Jan 1 '15 at 22:43
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