大约有 33,000 项符合查询结果（耗时：0.0520秒） [XML]
What is a StackOverflowError?
...nt message. Here you've not explicitly called yourself, but the OS/VM has done it for you.
To deal with them, you'll need to examine your code. If you've got functions that call themselves then check that you've got a terminating condition. If you have, then check that when calling the function you...
Differences between Emacs and Vim
Without getting into a religious argument about why one is better than the other, what are the practical differences between Emacs and Vim? I'm looking to learn one or the other, but I realize the learning curve for each is high and I can't decide. I have never used an editor of this type (I've al...
Python string prints as [u'String']
This will surely be an easy one but it is really bugging me.
10 Answers
10
...
List of tuples to dictionary
...documentation:
For example, these all return a
dictionary equal to {"one": 1, "two":
2}:
dict(one=1, two=2)
dict({'one': 1, 'two': 2})
dict(zip(('one', 'two'), (1, 2)))
dict([['two', 2], ['one', 1]])
share
...
What are the undocumented features and limitations of the Windows FINDSTR command?
...ys relative to the provided path, or relative to the current directory if none provided.
Note - The filename prefix can be avoided when searching multiple files by using the non-standard (and poorly documented) wildcards < and >. The exact rules for how these wildcards work can be found here. ...
Default value to a parameter while passing by reference in C++
...
You can do it for a const reference, but not for a non-const one. This is because C++ does not allow a temporary (the default value in this case) to be bound to non-const reference.
One way round this would be to use an actual instance as the default:
static int AVAL = 1;
void f( in...
nodeJs callbacks simple example
can any one give me a a simple example of nodeJs callbacks, I have already searched for the same on many websites but not able to understand it properly, Please give me a simple example.
...
Process all arguments except the first one (in a bash script)
...atenate them for you; other commands might not be so nice. Don't just use one or the other: learn the difference between * and @, and when to use each. You should be using them about equally. A good example of when this will be a problem: if $3 contains a line break (\n), it will be replaced with...
MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update
as the title says, I want to perform a find (one) for a document, by _id, and if doesn't exist, have it created, then whether it was found or was created, have it returned in the callback.
...
In PHP, can you instantiate an object and call a method on the same line?
...) {
return new Test($param);
}
And now, it becomes possible to use a one-liner, like you asked -- only thing is you are calling the function, thus not using new :
$a = Test(10)->myMethod();
var_dump($a);
And it works : here, I'm getting :
int 20
as output.
And, better, you can put s...