大约有 47,000 项符合查询结果（耗时：0.0620秒） [XML]
Scala: write string to file in one statement
...ding-safe. If an exception happens in write(), close will never be called, and the file won't be closed. PrintWriter also uses the default system encoding, which is very bad for portability. And finally, this approach generates a separate class specifically for this line (however, given that Scala a...
How do I detect if I am in release or debug mode?
...
The simplest, and best long-term solution, is to use BuildConfig.DEBUG. This is a boolean value that will be true for a debug build, false otherwise:
if (BuildConfig.DEBUG) {
// do something for a debug build
}
There have been reports...
Why can't an anonymous method be assigned to var?
...to be the default instead of Predicate or Action or any other possibility? And, for lambdas, why is it obvious that the intention is to choose the delegate form, rather than the expression tree form?
But we could say that Func is special, and that the inferred type of a lambda or anonymous method i...
Can someone explain this 'double negative' trick? [duplicate]
...script, but I have been reading Mark Pilgrim's "Dive into HTML5" webpage and he mentioned something that I would like a better understanding of.
...
E11000 duplicate key error index in mongodb mongoose
...nt with the sparse index to filter these null values from the unique index and avoid the error.
unique indexes
Sparse indexes only contain entries for documents that have the indexed field, even if the index field contains a null value.
In other words, a sparse index is ok with multiple documents...
Why can't I center with margin: 0 auto?
I have a #header div that is 100% width and within that div I have an unordered list. I have applied margin: 0 auto to the unordered list but it won't center it within the header div.
...
How to access parent scope from within a custom directive *with own scope* in AngularJS?
...I could do it right now by taking the $scope from the preLink parameters and iterating over it's $sibling scopes to find the conceptual "parent".
...
Better techniques for trimming leading zeros in SQL Server?
...t a blank. You need to be able to tell the difference between a '0' value and a blank value. Please see my post for a full solution: stackoverflow.com/a/21805081/555798
– MikeTeeVee
Feb 17 '14 at 18:15
...
Numpy: Get random set of rows from 2D array
...
>>> A = np.random.randint(5, size=(10,3))
>>> A
array([[1, 3, 0],
[3, 2, 0],
[0, 2, 1],
[1, 1, 4],
[3, 2, 2],
[0, 1, 0],
[1, 3, 1],
[0, 4, 1],
[2, 4, 2],
[3, 3, 1]])...
Differences between std::make_unique and std::unique_ptr with new
...that means that this is no longer unsafe. See C++ committee papers P0400R0 and P0145R3.
share
|
improve this answer
|
follow
|
...