大约有 43,630 项符合查询结果（耗时：0.0381秒） [XML]
Cast List to List in .NET 2.0
...
.NET 2.0 has the ConvertAll method where you can pass in a converter function:
List<int> l1 = new List<int>(new int[] { 1, 2, 3 } );
List<string> l2 = l1.ConvertAll<string>(delegate(int i) { return i.To...
How can I do an asc and desc sort using underscore.js?
...
You can use .sortBy, it will always return an ascending list:
_.sortBy([2, 3, 1], function(num) {
return num;
}); // [1, 2, 3]
But you can use the .reverse method to get it descending:
var array = _.sortBy([2, 3, 1], function(num) {
return num;
});
console.log(array); // [1, 2, 3]
con...
How many characters can UTF-8 encode?
If UTF-8 is 8 bits, does it not mean that there can be only maximum of 256 different characters?
10 Answers
...
How do I remove a property from a JavaScript object?
...
1
2
Next
8464
...
How do you display JavaScript datetime in 12 hour AM/PM format?
How do you display a JavaScript datetime object in the 12 hour format (AM/PM)?
25 Answers
...
How can I use pickle to save a dict?
...
802
Try this:
import pickle
a = {'hello': 'world'}
with open('filename.pickle', 'wb') as handle:
...
Extracting specific columns from a data frame
...
answered Apr 19 '15 at 21:19
Sam FirkeSam Firke
15k66 gold badges6565 silver badges8181 bronze badges
...
No secret option provided to Rack::Session::Cookie warning?
I am running Rails 3.2.3, Ruby 1.9 under Fedora 17. I get this warning, when I run rails s , and how do I fix?
7 Answers
...
How do you plot bar charts in gnuplot?
...
124
Simple bar graph:
set boxwidth 0.5
set style fill solid
plot "data.dat" using 1:3:xtic(2) wi...
How do I check what version of Python is running my script?
...
21 Answers
21
Active
...