大约有 18,000 项符合查询结果（耗时：0.0285秒） [XML]
Assigning code to a variable
Is it possible to make a variable, and assign a line of code to it, such as:
5 Answers
...
Why doesn't nodelist have forEach?
... <abbr> elements' inner text, but found that nodelist does not have a forEach method. I know that nodelist doesn't inherit from Array , but doesn't it seem like forEach would be a useful method to have? Is there a particular implementation issue I am not aware of that prevents addi...
Picking a random element from a set
How do I pick a random element from a set?
I'm particularly interested in picking a random element from a
HashSet or a LinkedHashSet, in Java.
Solutions for other languages are also welcome.
...
Calling remove in foreach loop in Java [duplicate]
In Java, is it legal to call remove on a collection when iterating through the collection using a foreach loop? For instance:
...
Converting an object to a string
How can I convert a JavaScript object into a string?
36 Answers
36
...
Which is more efficient, a for-each loop, or an iterator?
Which is the most efficient way to traverse a collection?
7 Answers
7
...
Undefined reference to `sin` [duplicate]
I have the following code (stripped down to the bare basics for this question):
4 Answers
...
How to make an immutable object in Python?
Although I have never needed this, it just struck me that making an immutable object in Python could be slightly tricky. You can't just override __setattr__ , because then you can't even set attributes in the __init__ . Subclassing a tuple is a trick that works:
...
Fast permutation -> number -> permutation mapping algorithms
I have n elements. For the sake of an example, let's say, 7 elements, 1234567. I know there are 7! = 5040 permutations possible of these 7 elements.
...
How to move screen without moving cursor in Vim?
I recently discovered Ctrl + E and Ctrl + Y shortcuts for Vim that respectively move the screen up and down with a one line step, without moving the cursor .
...