大约有 47,000 项符合查询结果（耗时：0.0298秒） [XML]
How to overload __init__ method based on argument type?
Let's say I have a class that has a member called data which is a list.
10 Answers
1...
Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
...t is both commutative and associative. This means the operation can be parallelized.
This distinction is very important for Big Data / MPP / distributed computing, and the entire reason why reduce even exists. The collection can be chopped up and the reduce can operate on each chunk, then the red...
How to check if all elements of a list matches a condition?
...
The best answer here is to use all(), which is the builtin for this situation. We combine this with a generator expression to produce the result you want cleanly and efficiently. For example:
>>> items = [[1, 2, 0], [1, 2, 0], [1, 2, 0]]
>>...
What does __FILE__ mean in Ruby?
I see this all the time in Ruby:
4 Answers
4
...
I want to delete all bin and obj folders to force all projects to rebuild everything
I work with multiple projects, and I want to recursively delete all folders with the name 'bin' or 'obj' that way I am sure that all projects will rebuild everything (sometimes it's the only way to force Visual Studio to forget all about previous builds).
...
ImportError in importing from sklearn: cannot import name check_build
...
Worked for me after installing scipy.
share
|
improve this answer
|
follow
|
...
Objective-C categories in static library
...roject as direct dependency (target -> general -> direct dependencies) and all works OK, but categories. A category defined in static library is not working in app.
...
NOT using repository pattern, use the ORM as is (EF)
... The more I started digging I started asking myself the question: "Do I really need it?"
9 Answers
...
How to set custom favicon in Express?
...
In Express 4
Install the favicon middleware and then do:
var favicon = require('serve-favicon');
app.use(favicon(__dirname + '/public/images/favicon.ico'));
Or better, using the path module:
app.use(favicon(path.join(__dirname,'public','ima...
How do I get the opposite (negation) of a Boolean in Python?
...ful if you want to use a function that requires a predicate-function or a callback.
For example map or filter:
>>> lst = [True, False, True, False]
>>> list(map(operator.not_, lst))
[False, True, False, True]
>>> lst = [True, False, True, False]
>>> list(filter...