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How do I reference a javascript object property with a hyphen in it?
...j["styleAttr"]
Use key notation rather than dot
style["text-align"]
All arrays in js are objects and all objects are just associative arrays, this means you can refer to a place in an object just as you would refer to a key in an array.
arr[0]
or the object
obj["method"] == obj.method
a couple ...
Why Large Object Heap and why do we care?
...point where copying no longer improves perf. With a special exception for arrays of double, they are considered 'large' when the array has more than 1000 elements. That's another optimization for 32-bit code, the large object heap allocator has the special property that it allocates memory at addr...
How to use Namespaces in Swift?
...y with Frameworks, but also with the Standard Library. You can "overwrite" Array, for example. Then "Array" refers to your own custom Array class, and Standard Library's Array is available as "Swift.Array".
– George
Aug 10 '14 at 18:47
...
C++ SFINAE examples?
...st has not too many elements.
The syntax char(*)[C] means: Pointer to an array with element type char and size C. If C is false (0 here), then we get the invalid type char(*)[0], pointer to a zero sized array: SFINAE makes it so that the template will be ignored then.
Expressed with boost::enabl...
How to Apply Gradient to background view of iOS Swift App
...e Colors you're providing to gradient must be of type CGColor. So set your array of CGColor to gl.colors.
The correct code is :
class Colors {
var gl:CAGradientLayer!
init() {
let colorTop = UIColor(red: 192.0 / 255.0, green: 38.0 / 255.0, blue: 42.0 / 255.0, alpha: 1.0).cgColor
...
A generic list of anonymous class
...
@DHornpout: That would give an array, not a List<T>.
– Jon Skeet
Mar 4 '09 at 22:47
1
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Extract a substring from a string in Ruby using a regular expression
...
String1.scan(/<([^>]*)>/).last.first
scan creates an array which, for each <item> in String1 contains the text between the < and the > in a one-element array (because when used with a regex containing capturing groups, scan creates an array containing the captures f...
How to get the last char of a string in PHP?
...nce code with these results:
substr() took 7.0334868431091seconds
array access took 2.3111131191254seconds
Direct string access (negative string offsets) took 1.7971360683441seconds
share
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C++及Windows异常处理(try，catch; __try,__finally, __except) - C/C++ - ...
...面我把try，catch; __try,__finally; __try, __except这三对异常处理使用标示逐一说明
本文参考了如下博文：
http://www.cnblogs.com/wenziqi/archive/2010/08/26/1809074.html
http://blog.csdn.net/lvwenshuai/article/details/6163342
http://topic.csdn.net/t/20030527/10/1838724.ht...
Is there a library function for Root mean square error (RMSE) in python?
... return np.sqrt(((predictions - targets) ** 2).mean())
rmse_val = rmse(np.array(d), np.array(p))
print("rms error is: " + str(rmse_val))
Which prints:
d is: ['0.00000000', '0.16600000', '0.33300000']
p is: ['0.00000000', '0.25400000', '0.99800000']
rms error between lists d and p is: 0.387284994...