大约有 47,000 项符合查询结果（耗时：0.0538秒） [XML]
What is a good use case for static import of methods?
...mport of the method was not a good idea. The static import was of a method from a DA class, which has mostly static methods. So in middle of the business logic I had a da activity that apparently seemed to belong to the current class:
...
Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'mscorlib
... Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly mscorlib
Yes, this technically can go wrong when you execute code on .NET 4.0 instead of .NET 4.5. The attribute was moved from System.Core.dll to mscorlib.dll in .NET 4.5. While that sounds like a rather na...
Get only part of an Array in Java?
...thon you can do something like this array[index:] and it returns the array from the index. Is something like this possible in Java.
...
What is the effect of extern “C” in C++?
...ared has internal linkage, and so does not have a language linkage
Linkage from C++ to objects defined in other languages and to objects defined in C++ from other languages is implementation-defined and language-dependent. Only where the object layout strategies of two language implementations are s...
surface plots in matplotlib
...ud into a surface.
Here's a smooth surface example:
import numpy as np
from mpl_toolkits.mplot3d import Axes3D
# Axes3D import has side effects, it enables using projection='3d' in add_subplot
import matplotlib.pyplot as plt
import random
def fun(x, y):
return x**2 + y
fig = plt.figure()...
What does SynchronizationContext do?
... builds) throw an exception, telling you that you may not access myTextBox from across another thread.
This is why you have to somehow "switch back" from the worker thread to the "UI thread" (where myTextBox was created) before that particular assignment. This is done as follows:
While you are stil...
How do I pass an object from one activity to another on Android? [duplicate]
...
Of course, its from my own class, its not a Standard android class. All I am saying is use some constant as a key!
– anargund
Jul 2 '12 at 22:39
...
Remove or uninstall library previously added : cocoapods
...ework via cocoapods into my iOS application. How can i remove that library from the project?
6 Answers
...
How to change a module variable from another module?
...
You are using from bar import a. a becomes a symbol in the global scope of the importing module (or whatever scope the import statement occurs in).
When you assign a new value to a, you are just changing which value a points too, not the...
How to sort a dataframe by multiple column(s)
...orting to add-on tools -- see this simpler answer which uses a trick right from the top of the example(order) code:
R> dd[with(dd, order(-z, b)), ]
b x y z
4 Low C 9 2
2 Med D 3 1
1 Hi A 8 1
3 Hi A 9 1
Edit some 2+ years later: It was just asked how to do this by column index. The answe...