大约有 43,630 项符合查询结果（耗时：0.0342秒） [XML]
How to sort two lists (which reference each other) in the exact same way
...
250
One classic approach to this problem is to use the "decorate, sort, undecorate" idiom, which i...
All possible array initialization syntaxes
...nd initialization methods for a simple array.
string[] array = new string[2]; // creates array of length 2, default values
string[] array = new string[] { "A", "B" }; // creates populated array of length 2
string[] array = { "A" , "B" }; // creates populated array of length 2
string[] array = new[]...
Cosine Similarity between 2 Number Lists
...een two lists , let's say for example list 1 which is dataSetI and list 2 which is dataSetII . I cannot use anything such as numpy or a statistics module. I must use common modules (math, etc) (and the least modules as possible, at that, to reduce time spent).
...
How to install latest version of git on CentOS 7.x/6.x
...
362
You can use WANDisco's CentOS repository to install Git 2.x: for CentOS 6, for CentOS 7
Instal...
How to swap keys and values in a hash
...
286
Ruby has a helper method for Hash that lets you treat a Hash as if it was inverted (in essence...
Most efficient method to groupby on an array of objects
...
1
2
Next
823
...
Difference between `set`, `setq`, and `setf` in Common Lisp?
...t the SET function.
What is now written as:
(setf (symbol-value '*foo*) 42)
was written as:
(set (quote *foo*) 42)
which was eventually abbreviavated to SETQ (SET Quoted):
(setq *foo* 42)
Then lexical variables happened, and SETQ came to be used for assignment to them too -- so it was no l...
Extract elements of list at odd positions
...
232
Solution
Yes, you can:
l = L[1::2]
And this is all. The result will contain the elements p...
How to check if one of the following items is in a list?
...
283
>>> L1 = [2,3,4]
>>> L2 = [1,2]
>>> [i for i in L1 if i in L2]
[2]
...
Using async/await for multiple tasks
...
int[] ids = new[] { 1, 2, 3, 4, 5 };
Parallel.ForEach(ids, i => DoSomething(1, i, blogClient).Wait());
Although you run the operations in parallel with the above code, this code blocks each thread that each operation runs on. For example, if t...