大约有 7,000 项符合查询结果（耗时：0.0246秒） [XML]
In plain English, what does “git reset” do?
... shouldn't be too surprising.
For example, git reset other-branch path/to/foo resets everything in path/to/foo to its state in other-branch, git reset -- . resets the current directory to its state in HEAD, and a simple git reset resets everything to its state in HEAD.
The main work tree and index...
Should switch statements always contain a default clause?
...ome languages you can assign integer values to enums. In C++ enum MyEnum { FOO = 0, BAR = 1 }; MyEnum value = (MyEnum)2; makes a valid MyEnum instance that is not equal to FOO or BAR. If either of these issues would cause an error in your project, a default case will help you find the error very qui...
What is the JavaScript >>> operator and how do you use it?
...ey can be used on array-like objects e.g. Array.prototype.indexOf.call({0:'foo', 1:'bar', length: 2}, 'bar') == 1;. The arguments object is also a good example. For pure array objects, it's impossible to change the type of the length property, because they implement an special [[Put]] internal metho...
What does the caret operator (^) in Python do?
...ns exponentiation. You could do that this way, just as one example:
class Foo(float):
def __xor__(self, other):
return self ** other
Then something like this will work, and now, for instances of Foo only, the ^ symbol will mean exponentiation.
In [16]: x = Foo(3)
In [17]: x
Out[17]:...
What is a StackOverflowError?
...
If you have a function like:
int foo()
{
// more stuff
foo();
}
Then foo() will keep calling itself, getting deeper and deeper, and when the space used to keep track of what functions you're in is filled up, you get the stack overflow error.
...
node.js global variables?
... single file that uses underscore, just like how in Java you do import com.foo.bar;. This makes it easier to figure out what your code is doing because the linkages between files are 'explicit'. Mildly annoying, but a good thing. .... That's the preaching.
There is an exception to every rule. I...
Struct like objects in Java
...etters. A possible solution would look like this:
public property String foo;
a->Foo = b->Foo;
Update: It's highly unlikely that property support will be added in Java 7 or perhaps ever. Other JVM languages like Groovy, Scala, etc do support this feature now. - Alex Miller
...
Save PL/pgSQL output from PostgreSQL to a CSV file
... you can use Postgresql's built in COPY command. e.g.
Copy (Select * From foo) To '/tmp/test.csv' With CSV DELIMITER ',' HEADER;
This approach runs entirely on the remote server - it can't write to your local PC. It also needs to be run as a Postgres "superuser" (normally called "root") because P...
A KeyValuePair in Java [duplicate]
...t giving a new name to class and the two elements.
– foo
Jun 29 '17 at 17:48
1
...
C/C++ include header file order
...hm>
#include <set>
#include <vector>
#include <3rdparty/foo.h>
#include <3rdparty/bar.h>
#include "myproject/another.h"
#include "myproject/specific/bla.h"
#include "detail/impl.h"
Each group separated by a blank line from the next one:
Header corresponding to this ...