大约有 47,000 项符合查询结果(耗时:0.0697秒) [XML]
How to check if element has any children in Javascript?
... (as opposed to text nodes, attribute nodes, etc.) on all modern browsers (and IE8 — in fact, even IE6) you can do this: (thank you Florian!)
if (element.children.length > 0) { // Or just `if (element.children.length)`
// It has at least one element as a child
}
That relies on the child...
Is there an upside down caret character?
...
There's ▲: ▲ and ▼: ▼
share
|
improve this answer
|
follow
|
...
Storing sex (gender) in database
... 2,147,483,648 to 2,147,483,647
BIT 1 (2 if 9+ columns) 2 (0 and 1)
CHAR(1) 1 26 if case insensitive, 52 otherwise
The BIT data type can be ruled out because it only supports two possible genders which is inadequate. While INT supports more than two options, i...
How do I create a dictionary with keys from a list and values defaulting to (say) zero? [duplicate]
I have a = [1,2,3,4] and I want d = {1:0, 2:0, 3:0, 4:0}
5 Answers
5
...
Is there an equivalent for the Zip function in Clojure Core or Contrib?
... zipWith family for the common use case of tupling).
In contrast, Clojure and other Lisps have good support for variable arity functions; map is one of them and can be used for "tupling" in a manner similar to Haskell's
zipWith (\x y -> (x, y))
The idiomatic way to build a "tuple" in Clojure ...
Why does pylint object to single character variable names?
I'm still getting used to python conventions and using pylint to make my code more pythonic, but I'm puzzled by the fact that pylint doesn't like single character variable names. I have a few loops like this:
...
Read/Write 'Extended' file properties (C#)
...t is in c#:
Note, you have to add a reference to Microsoft Shell Controls and Automation from the COM tab of the References dialog.
public static void Main(string[] args)
{
List<string> arrHeaders = new List<string>();
Shell32.Shell shell = new Shell32.Shell();
Shell32.Fol...
How to initialize an array's length in JavaScript?
...he tutorials that I've read on arrays in JavaScript (including w3schools and devguru ) suggest that you can initialize an array with a certain length by passing an integer to the Array constructor using the var test = new Array(4); syntax.
...
Best branching strategy when doing continuous integration?
...Since I'm familiar with Cruise Control, I also blogged about task branches and CI here. It's an step by step tutorial explaning how to do it with Plastic SCM.
Finally, I found some of the topics about CI (and potentially talking about branching) at Duvall's book on CI very interesting too.
Hope yo...
How would you access Object properties from within an object method? [closed]
...y adds code to a setter that needs to run every time that property is set, and the property is being set internally w/o that setter being called).
share
|
improve this answer
|
...