大约有 12,000 项符合查询结果（耗时：0.0376秒） [XML]
Does Java support default parameter values?
...l ways to simulate default parameters in Java:
Method overloading.
void foo(String a, Integer b) {
//...
}
void foo(String a) {
foo(a, 0); // here, 0 is a default value for b
}
foo("a", 2);
foo("a");
One of the limitations of this approach is that it doesn't work if you have two optio...
How does the extend() function work in jQuery?
... precise in explaining how extend works, so I ran a little test:
var a = {foo: 1, bar: 1};
var b = {foo: 2, baz: 2};
var c = {foo: 3};
var r = jQuery.extend(a,b,c);
console.log("A: Foo=" + a.foo + " Bar=" + a.bar + " Baz=" + a.baz);
console.log("B: Foo=" + b.foo + " Bar=" + b.bar + " Baz=" + b.baz)...
diff current working copy of a file with another branch's committed copy
I have a repo with file foo in the master branch. I switched to bar branch and made some changes to foo . How can I now run a git diff between this copy (which isn't committed yet) and the copy of the master branch?
...
What is std::string::c_str() lifetime?
...gs are not modified while in that scope. (However, we don't know what use_foo() or ~Foo() might be doing with those values; if they copy the strings elsewhere, then they should do a true copy, and not just copy the char pointers.)
...
Using python map and other functional tools
... through the different functions, but to access it directly from maptest:
foos = [1.0,2.0,3.0,4.0,5.0]
bars = [1,2,3]
def maptest(foo):
print foo, bars
map(maptest, foos)
With your original maptest function you could also use a lambda function in map:
map((lambda foo: maptest(foo, bars)), ...
Can't find a “not equal” css attribute selector
I want to target div elements where the attribute "foo" has a value.
4 Answers
4
...
How to join components of a path when you are constructing a URL in Python
For example, I want to join a prefix path to resource paths like /js/foo.js.
11 Answers
...
Use 'import module' or 'from module import'?
...
The difference between import module and from module import foo is mainly subjective. Pick the one you like best and be consistent in your use of it. Here are some points to help you decide.
import module
Pros:
Less maintenance of your import statements. Don't need to add any a...
How to define an alias in fish shell?
...
This is how I define a new function foo, run it, and save it persistently.
sthorne@pearl~> function foo
echo 'foo was here'
end
sthorne@pearl~> foo
foo was here
sthorne@pearl~> funcsave foo
...
Why can templates only be implemented in the header file?
...e given template argument. For example:
template<typename T>
struct Foo
{
T bar;
void doSomething(T param) {/* do stuff using T */}
};
// somewhere in a .cpp
Foo<int> f;
When reading this line, the compiler will create a new class (let's call it FooInt), which is equivalent ...