大约有 45,000 项符合查询结果（耗时：0.0601秒） [XML]
Why is early return slower than else?
...e question , but I was unaware of it. Apologies. The answers provided are different though!
1 Answer
...
How do I concatenate strings and variables in PowerShell?
...($assoc.Name) - $($assoc.Owner)"
See the Windows PowerShell Language Specification Version 3.0, p34, sub-expressions expansion.
share
|
improve this answer
|
follow
...
How to limit the maximum value of a numeric field in a Django model?
...erRangeField(min_value=-100, max_value=100)
What would be really cool is if it could be called with the range operator like this:
size = fields.IntegerRangeField(range(1, 50))
But, that would require a lot more code since since you can specify a 'skip' parameter - range(1, 50, 2) - Interesting ...
How to make inline functions in C#
...(x);
}
Action<int> helloWorld = delegate // parameters can be elided if ignored
{
Console.WriteLine("Hello world!");
}
Lambdas are new in C# 3.0 and come in two flavours.
Expression lambdas:
Func<int, int, int> add = (int x, int y) => x + y; // or...
Func<int, int, int> ...
Is MATLAB OOP slow or am I doing something wrong?
...nk the upshot of this is that:
MCOS/classdef methods are faster. Cost is now about on par with old style classes, as long as you use the foo(obj) syntax. So method speed is no longer a reason to stick with old style classes in most cases. (Kudos, MathWorks!)
Putting functions in namespaces makes t...
What is the result of % in Python?
...
@P.MyerNore I know this is almost 3 years later, but may help others. Read the first highlighted para in sec. 5.6.2 linked above by KurzedMetal. The "x %= {}" is simply a short-form for "x = x % {...}"
– Sujay Phadke
...
Difference between staticmethod and classmethod
What is the difference between a function decorated with @staticmethod and one decorated with @classmethod ?
27 Answers
...
Repeat string to certain length
...
Pillmod's / Pillmuncher's code is more beautiful, but unfortunately slower than Scheirer's code, because adding to an already long string is an expensive operation (the Python runtime will have to copy the string to a new memory location), while truncating a temporary ...
Is there a foreach loop in Go?
...e we are
// element is the element from someSlice for where we are
}
If you don't care about the index, you can use _:
for _, element := range someSlice {
// element is the element from someSlice for where we are
}
The underscore, _, is the blank identifier, an anonymous placeholder.
...
Naming of ID columns in database tables
... does this!)and forget to change the alias in the join condition.
So you now have
select t1.field1, t2.field2, t3.field3
from table1 t1
join table2 t2 on t1.id = t2.table1id
join table3 t3 on t1.id = t3.table2id
when you meant
select t1.field1, t2.field2, t3.field3
from table1 t1
join table...