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What is :: (double colon) in Python when subscripting sequences?
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The syntax is:
seq[start:end:step]
So you can do:
>>> range(100)[5:18:2]
[5, 7, 9, 11, 13, 15, 17]
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How can I change UIButton title color?
...l)
// Set button's frame
button.frame.origin = CGPoint(x: 100, y: 100)
button.sizeToFit()
// Add action to button
button.addTarget(self, action: #selector(printZero(_:)), for: UIControl.Event.touchUpInside)
// Add button to subView
view.addS...
Scala: List[Future] to Future[List] disregarding failed futures
... Kevin WrightKevin Wright
48.2k88 gold badges100100 silver badges152152 bronze badges
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Evaluating a mathematical expression in a string
...o limit input arguments for a**b:
def power(a, b):
if any(abs(n) > 100 for n in [a, b]):
raise ValueError((a,b))
return op.pow(a, b)
operators[ast.Pow] = power
Or to limit magnitude of intermediate results:
import functools
def limit(max_=None):
"""Return decorator that l...
Validating IPv4 addresses with regexp
... 250-5 case, after that it cleverly ORs all the possible cases for 200-249 100-199 10-99 cases. Notice that the |) part is not a mistake, but actually ORs the last case for the 0-9 range. I've also omitted the ?: non-capturing group part as we don't really care about the captured items, they would n...
Where is svn.exe in my machine?
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Take a look a Stefan Egli answer. V1.7 comes with the option to also install the svn binaries.
– Aaron Carlson
Jan 12 '12 at 14:39
5
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Nginx缓存解决方案：SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术
...表一表Nginx配置文件长啥样：
lua_shared_dict phoenix_status 100m;
lua_package_path '/path/to/phoenix/include/?.lua;/path/to/phoenix/vendor/?.lua;;';
init_by_lua_file /path/to/phoenix/config.lua;
server {
listen 80;
server_name foo.com;
root /path/to/root;
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How to present popover properly in iOS 8
...elf
popover.sourceView = self.view
popover.sourceRect = CGRectMake(100,100,0,0)
self.presentViewController(nav, animated: true, completion: nil)
}
That's the way.
You don't talk to the popover itself anymore, you talk to the view controller inside of it to set the content size, by ...
VC窗口刷新InvalidateRect和UpdateWindow - C/C++ - 清泛网 - 专注C/C++及内核技术
...ows会在这里返回绘图信息结构，结构中包含了无效区域的位置和大小，绘图信息结构的定义如下：
typedef struct tagPAINTSTRUCT { // ps
HDC hdc;
BOOL fErase;
RECT rcPaint;
BOOL fR...
Export query result to .csv file in SQL Server 2008
... add two lines at the top of the script: Add-PSSnapin SqlServerCmdletSnapin100 and Add-PSSnapin SqlServerProviderSnapin100.
– Eric J.
Dec 7 '14 at 22:28
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