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Understanding __get__ and __set__ and Python descriptors
... __get__(self, instance, owner):
return 5 * (instance.fahrenheit - 32) / 9
def __set__(self, instance, value):
instance.fahrenheit = 32 + 9 * value / 5
class Temperature:
celsius = Celsius()
def __init__(self, initial_f):
self.fahrenheit = initial_f
t = Tem...
CDC:DrawText 多行显示文本（文本自动换行） - C++ UI - 清泛IT社区，为创新赋能！
... LPRECT lpRect, // formatting dimensions
UINT uFormat // text-drawing options
);复制代码参数：
hdc：设备环境句柄。
lpString：指向将被写入的字符串的指针，如果参数nCount是C1...
How do I print the type of a variable in Rust?
...e, set the variable to a type which doesn't work:
let mut my_number: () = 32.90;
// let () = x; would work too
error[E0308]: mismatched types
--> src/main.rs:2:29
|
2 | let mut my_number: () = 32.90;
| ^^^^^ expected (), found floating-point number
|
= ...
Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
控件重绘函数/消息OnPaint,OnDraw,OnDrawItem,DrawItem的区别 - C/C++ - 清...
...让子类自己有一个处理的机会OnCtlColor (CDC* pDC, CWnd* pWnd, UINT nCtlColor)pDC,pWnd都是于子类相关的，在这里可以设置，前景颜色，背景颜色，画刷类型，字体等等，但不能改变元素的界面框架，这是DrawItem 所能干的。如果同时有DrawItem...
Cast Object to Generic Type for returning
... |
edited Mar 1 '18 at 13:32
answered Jan 25 '13 at 15:19
S...
How to make an array of arrays in Java
...10][]?
– Jon Skeet
Jan 24 '11 at 11:32
Yes. Similar to Peter's answer.
– Terence Ponce
...
How to easily map c++ enums to strings
...
32
MSalters solution is a good one but basically re-implements boost::assign::map_list_of. If you ...
How to get current CPU and RAM usage in Python?
...pports Linux, Windows, OSX, Sun Solaris, FreeBSD, OpenBSD and NetBSD, both 32-bit and 64-bit architectures, with Python versions from 2.6 to 3.5 (users of Python 2.4 and 2.5 may use 2.1.3 version).
Some examples:
#!/usr/bin/env python
import psutil
# gives a single float value
psutil.cpu_percent()...
What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
... '(gobble_args(0,ltr_fun(1),ltr_fun(2),ltr_fun(3),ltr_fun(4)),ltr_result==4321)' is false.
ltr_result is 1234 in this case
..25a pointer arithmetic works outside arrays
but '(diff=&p1-&p2, &p2+diff==&p1)' is false.
..26 sizeof() does not evaluate its arguments
but '(i=10,sizeof(char[...