大约有 43,000 项符合查询结果（耗时：0.0698秒） [XML]
Why does Python code run faster in a function?
...de in Python runs in (Note: The timing is done with the time function in BASH in Linux.)
3 Answers
...
Why do function pointer definitions work with any number of ampersands '&' or asterisks '*'?
...
3 Answers
3
Active
...
Use of def, val, and var in scala
These lines of code outputs 12 , even though person.age=20 was successfully executed. I found that this happens because I used def in def person = new Person("Kumar",12) . If I use var or val the output is 20 . I understand the default is val in scala. This:
...
How to find index of all occurrences of element in array?
I am trying to find the index of all the instances of an element, say, "Nano", in a JavaScript array.
15 Answers
...
Rolling or sliding window iterator?
I need a rolling window (aka sliding window) iterable over a sequence/iterator/generator. Default Python iteration can be considered a special case, where the window length is 1. I'm currently using the following code. Does anyone have a more Pythonic, less verbose, or more efficient method for d...
Convert a timedelta to days, hours and minutes
I've got a timedelta. I want the days, hours and minutes from that - either as a tuple or a dictionary... I'm not fussed.
7...
How many classes should I put in one file? [closed]
I'm used to the Java model where you can have one public class per file. Python doesn't have this restriction, and I'm wondering what's the best practice for organizing classes.
...
is_null($x) vs $x === null in PHP [duplicate]
PHP has two (that I know of, and three if you count isset() ) methods to determine if a value is null: is_null() and === null . I have heard, but not confirmed, that === null is faster, but in a code review someone strongly suggested that I use is_null() instead as it is specifically design...
Using Kafka as a (CQRS) Eventstore. Good idea?
Although I've come across Kafka before, I just recently realized Kafka may perhaps be used as (the basis of) a CQRS , eventstore .
...
Doctrine2: Best way to handle many-to-many with extra columns in reference table
I'm wondering what's the best, the cleanest and the most simply way to work with many-to-many relations in Doctrine2.
14 A...