大约有 47,000 项符合查询结果（耗时：0.0407秒） [XML]
Mapping a function on the values of a map in Clojure
...
I like this version because it's super short and obvious if you understand all the functions and such it uses. And if you don't it's an excuse to learn them!
– Runevault
Nov 5 '09 at 3:14
...
Rails DB Migration - How To Drop a Table?
...ation to already have the code you want. You can create an empty migration and then populate it with the code you need.
You can find information about how to accomplish different tasks in a migration here:
http://api.rubyonrails.org/classes/ActiveRecord/Migration.html
More specifically, you can s...
Java: int array initializes with nonzero elements
... with a situation where it is not. Such a behavior occurs first in JDK 7u4 and also occurs in all later updates (I use 64-bit implementation). The following code throws exception:
...
Editing in the Chrome debugger
...not for me, so I don't have access to the source file. I want to edit code and see what effects they have on the page, in this case stopping an animation from queuing up a bunch of times.
...
Something better than .NET Reflector? [closed]
...h is absolutely ridiculous), half the time the update doesn't go smoothly, and it is increasingly hindering my productivity with each update. I am sick of it, and I am ready for something better. Is there a better disassembler?
...
DateTime format to SQL format using C#
I am trying to save the current date time format from C# and convert it to an SQL Server date format like so yyyy-MM-dd HH:mm:ss so I can use it for my UPDATE query.
...
JavaScript: remove event listener
...to use named functions.
Also, the click variable needs to be outside the handler to increment.
var click_count = 0;
function myClick(event) {
click_count++;
if(click_count == 50) {
// to remove
canvas.removeEventListener('click', myClick);
}
}
// to add
canvas.addEventL...
How to style the option of an html “select” element?
...pe of element is an example of a "replaced element". They are OS-dependent and are not part of the HTML/browser. It cannot be styled via CSS.
There are replacement plug-ins/libraries that look like a <select> but are actually composed of regular HTML elements that CAN be styled.
...
Why do I get an UnsupportedOperationException when trying to remove an element from a List?
...|")
On better algorithm
Instead of calling remove one at a time with random indices, it's better to generate enough random numbers in the range, and then traversing the List once with a listIterator(), calling remove() at appropriate indices. There are questions on stackoverflow on how to gener...
How to convert Set to String[]?
... edited Apr 13 '18 at 13:05
Alexander Farber
17.5k6464 gold badges203203 silver badges359359 bronze badges
answered May 12 '11 at 18:16
...