大约有 6,261 项符合查询结果（耗时：0.0354秒） [XML]
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 ...
Static variable inside of a function in C
...re the variable name can be seen. Here, x is visible only inside function foo().
The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to ...
Pandas index column title or name
...rty
In [7]: df.index.name
Out[7]: 'Index Title'
In [8]: df.index.name = 'foo'
In [9]: df.index.name
Out[9]: 'foo'
In [10]: df
Out[10]:
Column 1
foo
Apples 1
Oranges 2
Puppies 3
Ducks 4
...
Why are exclamation marks used in Ruby methods?
...eone else might have a reference to. Here's a simple example for strings:
foo = "A STRING" # a string called foo
foo.downcase! # modifies foo itself
puts foo # prints modified foo
This will output:
a string
In the standard libraries, there are a lot of places you'll see pairs of ...
How to add property to a class dynamically?
...But that's the catch: you have to add it to the class.
>>> class Foo(object):
... pass
...
>>> foo = Foo()
>>> foo.a = 3
>>> Foo.b = property(lambda self: self.a + 1)
>>> foo.b
4
A property is actually a simple implementation of a thing called a d...