大约有 44,000 项符合查询结果（耗时：0.0483秒） [XML]
Define global variable in a JavaScript function
Is it possible to define a global variable in a JavaScript function?
13 Answers
13
...
Equivalent of “continue” in Ruby
In C and many other languages, there is a continue keyword that, when used inside of a loop, jumps to the next iteration of the loop. Is there any equivalent of this continue keyword in Ruby?
...
Update date + one year in mysql
When I want setting numerical value +1 in mysql table, I use e.g.:
3 Answers
3
...
Setting multiple attributes for an element at once with JavaScript
...make a helper function:
function setAttributes(el, attrs) {
for(var key in attrs) {
el.setAttribute(key, attrs[key]);
}
}
Call it like this:
setAttributes(elem, {"src": "http://example.com/something.jpeg", "height": "100%", ...});
...
What does a lazy val do?
...
The difference between them is, that a val is executed when it is defined whereas a lazy val is executed when it is accessed the first time.
scala> val x = { println("x"); 15 }
x
x: Int = 15
scala> lazy val y = { println("y"); 13 }
y: Int = <lazy>
scala> x
res2: Int = 15
sca...
JetBrains / IntelliJ keyboard shortcut to collapse all methods
I'm working on some legacy code that has a class that is 10,000+ lines of code and has 100s of methods. Is there a shortcut for any JetBrains IDE (since the shortcut would likely be shared across all of them) to collapse all the methods / functions so that only the method signatures are shown?
...
What do ellipsis […] mean in a list?
I was playing around in python. I used the following code in IDLE:
6 Answers
6
...
Stop “developer tools access needs to take control of another process for debugging to continue” ale
I recently upgraded to 10.7.3, and when I try to debug my iOS project in the simulator for the first time after logging in, I'm prompted with the following two alerts:
...
Removing all non-numeric characters from string in Python
How do we remove all non-numeric characters from a string in Python?
7 Answers
7
...
No Main() in WPF?
I am a beginner when it comes to programming but I was sure that one of the universal rules was that a program starts with Main(). I do not see one when I create a WPF project. Is Main() simply named something differently in WPF?
...