大约有 48,000 项符合查询结果（耗时：0.0688秒） [XML]
List comprehension in Ruby
...lock.nil?
self.collect(&block).compact
end
end
some_array = [1, 2, 3, 4, 5, 6]
new_array = some_array.comprehend {|x| x * 3 if x % 2 == 0}
puts new_array
Prints:
6
12
18
I would probably just do it the way you did though.
...
Is there an alternative to string.Replace that is case-insensitive?
...
answered Oct 28 '08 at 19:47
Todd WhiteTodd White
7,49222 gold badges3232 silver badges3333 bronze badges
...
Disabled input text color
...
236
-webkit-text-fill-color: #880000;
opacity: 1; /* required on iOS */
...
How do I check for C++11 support?
...
125
There is a constant named __cplusplus that C++ compilers should set to the version of the C++ s...
Remove all the children DOM elements in div
...
286
while (node.hasChildNodes()) {
node.removeChild(node.lastChild);
}
...
How to retrieve absolute path given relative
...
21 Answers
21
Active
...
Android App Not Install. An existing package by the same name with a conflicting signature is alread
...
|
edited Jul 24 '14 at 16:17
answered Nov 13 '13 at 17:18
...
iPhone Simulator - Simulate a slow connection?
...
|
edited Jun 22 '16 at 22:03
Jeremy Mack
4,97722 gold badges2323 silver badges2222 bronze badges
...
Setting Access-Control-Allow-Origin in ASP.Net MVC - simplest possible method
...
|
edited Mar 2 '16 at 20:35
answered Jun 9 '11 at 9:00
...
Printf width specifier to maintain precision of floating-point value
...IG;
double OneSeventh = 1.0/7.0;
printf("%.*e\n", Digs, OneSeventh);
// 1.428571428571428492127e-01
But let's dig deeper ...
Mathematically, the answer is "0.142857 142857 142857 ...", but we are using finite precision floating point numbers.
Let's assume IEEE 754 double-precision binary.
So t...