大约有 21,000 项符合查询结果（耗时：0.0487秒） [XML]
Why does the order of the loops affect performance when iterating over a 2D array?
...CPU can do a lot of work in the time it takes for a single cache line to load.
Now look back at the order of accesses: The second example is (1) grabbing a chunk of 16 ints, (2) modifying all of them, (3) repeat 4000*4000/16 times. That's nice and fast, and the CPU always has something to work on.
...
Redirect all to index.php using htaccess
...
Pang
8,2181717 gold badges7373 silver badges111111 bronze badges
answered Aug 23 '13 at 15:35
CD001CD001
...
Placing border inside of div and not on its edge
...der on it. I know I can write style="border: 1px solid black" , but this adds 2px to either side of the div, which is not what I want.
...
How to turn off word wrapping in HTML?
...
JonJon
383k6868 gold badges674674 silver badges755755 bronze badges
add a comment
...
Last non-empty cell in a column
...
Marc.2377
4,90255 gold badges3636 silver badges6565 bronze badges
answered Mar 26 '11 at 14:32
Doug GlancyDoug Glancy
...
What is the difference between string primitives and String objects in JavaScript?
...
flavianflavian
25.6k1010 gold badges5454 silver badges9292 bronze badges
add a comment
...
Writing outputs to log file and console
...
Ian RobertsIan Roberts
112k1515 gold badges154154 silver badges173173 bronze badges
...
How to find index of list item in Swift?
... indexOfB = arr.indexOf("b") // 1
let indexOfD = arr.indexOf("d") // nil
Additionally, finding the first element in an array fulfilling a predicate is supported by another extension of CollectionType:
let arr2 = [1,2,3,4,5,6,7,8,9,10]
let indexOfFirstGreaterThanFive = arr2.indexOf({$0 > 5}) //...
Showing a different background colour in Vim past 80 characters
...
If you have Vim >= v7.3, you can simply add this to your .vimrc to highlight 81 and onward (so 80 is your last valid column):
let &colorcolumn=join(range(81,999),",")
If you don't see a highlight, you may not have a ColorColumn highlight color set. Add this ...
Which regular expression operator means 'Don't' match this character?
...: for example [^abcde] will match anything but a,b,c,d,e characters.
Instead of specifying all the characters literally, you can use shorthands inside character classes: [\w] (lowercase) will match any "word character" (letter, numbers and underscore), [\W] (uppercase) will match anything but word ...