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foldl versus foldr behavior with infinite lists
...be a frequent source of confusion, so here's a more general overview:
Consider folding a list of n values [x1, x2, x3, x4 ... xn ] with some function f and seed z.
foldl is:
Left associative: f ( ... (f (f (f (f z x1) x2) x3) x4) ...) xn
Tail recursive: It iterates through the list, producing th...
Unignore subdirectories of ignored directories in Git
...tuff/keep/
!/uploads/rubbish/stuff/keep/*
To include subdirectories inside /uploads/rubbish/stuff/keep/ add the third line:
!/uploads/rubbish/stuff/keep/**/*
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How can I dynamically create derived classes from a base class
...f key not in argnames:
raise TypeError("Argument %s not valid for %s"
% (key, self.__class__.__name__))
setattr(self, key, value)
BaseClass.__init__(self, name[:-len("Class")])
newclass = type(name, (BaseClass,),{"__init__": __init__})
...
Do you have to put Task.Run in a method to make it async?
...essions). async methods may return Task, Task<T>, or (if you must) void.
Any type that follows a certain pattern can be awaitable. The most common awaitable types are Task and Task<T>.
So, if we reformulate your question to "how can I run an operation on a background thread in a way th...
FixedThreadPool vs CachedThreadPool: the lesser of two evils
...er lived tasks and with my very limited knowledge of multithreading, I considered the average life of the threads (several minutes) " long lived ".
...
How does std::move() transfer values into RValues?
... as lvalue (and implicit conversion from lvalue to rvalue reference is forbidden by standard).
Here's what happens when we call move with lvalue:
Object a; // a is lvalue
Object b = std::move(a);
and corresponding move instantiation:
// move with [T = Object&]
remove_reference<Object&a...
Why does an overridden function in the derived class hide other overloads of the base class?
Consider the code :
4 Answers
4
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Set theme for a Fragment
... for Fragment, add next code in the onCreateView() of the Fragment:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// create ContextThemeWrapper from the original Activity Context with the custom theme
final Context contextThem...
iTextSharp - Sending in-memory pdf in an email attachment
... with the attachment, but the attached pdf document come across with 0kb. Did you actually open the pdf an email sent?
– Gus Cavalcanti
Jul 28 '09 at 20:37
2
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iReport not starting using JRE 8
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Adding the jdkhome did it for me. Also for older versions: 4.7.0 and 4.1.2
– Dimitri Dewaele
Feb 9 '15 at 9:06
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