大约有 44,300 项符合查询结果（耗时：0.0344秒） [XML]
How to initialise a string from NSData in Swift
...
224
This is how you should initialize the NSString:
Swift 2.X or older
let datastring = NSString...
Strange out of memory issue while loading an image to a Bitmap object
...
1
2
Next
661
...
clang error: unknown argument: '-mno-fused-madd' (python package installation failure)
I get the following error when attempting to install psycopg2 via pip on Mavericks 10.9:
14 Answers
...
Why is it said that “HTTP is a stateless protocol”?
...
|
edited Nov 2 '12 at 17:37
answered Nov 2 '12 at 17:24
...
Script parameters in Bash
...
125
The arguments that you provide to a bashscript will appear in the variables $1 and $2 and $3 wh...
Converting camel case to underscore case in ruby
... underscore
self.gsub(/::/, '/').
gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
gsub(/([a-z\d])([A-Z])/,'\1_\2').
tr("-", "_").
downcase
end
end
Then you can do fun stuff:
"CamelCase".underscore
=> "camel_case"
...
What is the fastest method for selecting descendant elements in jQuery?
...
Method 1 and method 2 are identical with the only difference is that method 1 needs to parse the scope passed and translate it to a call to $parent.find(".child").show();.
Method 4 and Method 5 both need to parse the selector and then just cal...
How to convert latitude or longitude to meters?
...
Here is a javascript function:
function measure(lat1, lon1, lat2, lon2){ // generally used geo measurement function
var R = 6378.137; // Radius of earth in KM
var dLat = lat2 * Math.PI / 180 - lat1 * Math.PI / 180;
var dLon = lon2 * Math.PI / 180 - lon1 * Math.PI / 180;
...
Pairwise crossproduct in Python [duplicate]
...
You're looking for itertools.product if you're on (at least) Python 2.6.
>>> import itertools
>>> a=[1,2,3]
>>> b=[4,5,6]
>>> itertools.product(a,b)
<itertools.product object at 0x10049b870>
>>> list(itertools.product(a,b))
[(1, 4), (1, 5), ...
C# '@' before a String [duplicate]
...
answered Feb 2 '11 at 19:54
Mark AveniusMark Avenius
12.6k66 gold badges3636 silver badges4848 bronze badges
...