大约有 16,000 项符合查询结果（耗时：0.0296秒） [XML]
PHP Sort Array By SubArray Value
...
Use usort.
function cmp_by_optionNumber($a, $b) {
return $a["optionNumber"] - $b["optionNumber"];
}
...
usort($array, "cmp_by_optionNumber");
In PHP ≥5.3, you should use an anonymous function instead:
usort($array, function ($a, $b) {
...
How to merge two sorted arrays into a sorted array? [closed]
...
A minor improvement, but after the main loop, you could use System.arraycopy to copy the tail of either input array when you get to the end of the other. That won't change the O(n) performance characteristics of your solution, though.
...
SQL update fields of one table from fields of another one
I have two tables:
7 Answers
7
...
Is Using .NET 4.0 Tuples in my C# Code a Poor Design Decision?
With the addition of the Tuple class in .net 4, I have been trying to decide if using them in my design is a bad choice or not. The way I see it, a Tuple can be a shortcut to writing a result class (I am sure there are other uses too).
...
Access multiple elements of list knowing their index
...r.itemgetter:
from operator import itemgetter
a = [-2, 1, 5, 3, 8, 5, 6]
b = [1, 2, 5]
print(itemgetter(*b)(a))
# Result:
(1, 5, 5)
Or you can use numpy:
import numpy as np
a = np.array([-2, 1, 5, 3, 8, 5, 6])
b = [1, 2, 5]
print(list(a[b]))
# Result:
[1, 5, 5]
But really, your current solu...
Sort array of objects by string property value
I have an array of JavaScript objects:
47 Answers
47
...
Should 'using' directives be inside or outside the namespace?
I have been running StyleCop over some C# code, and it keeps reporting that my using directives should be inside the namespace.
...
Best way to make Java's modulus behave like it should with negative numbers?
...
It behaves as it should a % b = a - a / b * b; i.e. it's the remainder.
You can do (a % b + b) % b
This expression works as the result of (a % b) is necessarily lower than b, no matter if a is positive or negative. Adding b ...
RegEx match open tags except XHTML self-contained tags
I need to match all of these opening tags:
35 Answers
35
...
Calling parent class __init__ with multiple inheritance, what's the right way?
...
Both ways work fine. The approach using super() leads to greater flexibility for subclasses.
In the direct call approach, C.__init__ can call both A.__init__ and B.__init__.
When using super(), the classes need to be des...