大约有 42,000 项符合查询结果（耗时：0.0393秒） [XML]
What is the fastest or most elegant way to compute a set difference using Javascript arrays?
...don't know if this is most effective, but perhaps the shortest
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(function(x) { return B.indexOf(x) < 0 })
console.log(diff);
Updated to ES6:
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(x => !B.includes(x) );
console.log(diff);
...
Show a number to two decimal places
... |
edited Dec 18 '13 at 7:58
answered Dec 19 '10 at 15:14
...
Convert Elixir string to integer or float
... |
edited Jul 10 '18 at 13:06
Ronan Boiteau
7,52566 gold badges2828 silver badges4343 bronze badges
ans...
Any way to modify Jasmine spies based on arguments?
...
3 Answers
3
Active
...
Compare two List objects for equality, ignoring order [duplicate]
...
313
If you want them to be really equal (i.e. the same items and the same number of each item), I ...
Difference between jar and war in Java
...
13 Answers
13
Active
...
How to check whether a variable is a class or not?
...
348
Even better: use the inspect.isclass function.
>>> import inspect
>>> class...
How do I detect if Python is running as a 64-bit application? [duplicate]
...k with the windows registry. Depending on whether you're running python as 32-bit or 64-bit, the key value will be different. How do I detect if Python is running as a 64-bit application as opposed to a 32-bit application?
...
Determine the process pid listening on a certain port
..., the line that does the job is:
sockstat -4 -l | grep :80 | awk '{print $3}' | head -1
share
|
improve this answer
|
follow
|
...