大约有 30,000 项符合查询结果(耗时:0.0300秒) [XML]
Why is there “data” and “newtype” in Haskell? [duplicate]
...ns (e.g., only one constructor), and that due to these restrictions the runtime system can handle newtype s more efficiently. And the handling of pattern matching for undefined values is slightly different.
...
How to write DataFrame to postgres table?
...o.sql: https://gist.github.com/jorisvandenbossche/10841234.
I wrote this a time ago, so cannot fully guarantee that it always works, buth the basis should be there). If you put that file in your working directory and import it, then you should be able to do (where con is a postgresql connection):
i...
What's the easiest way to call a function every 5 seconds in jQuery? [duplicate]
... your speedy answer to the question when your rep's not capped, in the meantime I will +1 your comment for being so informative to my question :)
– Anthony Forloney
Jan 31 '10 at 8:08
...
The data-toggle attributes in Twitter Bootstrap
...pe to open. In order to do this, you need to associate things like cooking time, primary ingredient, meal position, and so on right inside the list elements for the recipes.
<li><a href="recipe1.html">Borscht</a></li>
<li><a href="recipe2.html">Chocolate Mousse&...
How to make blinking/flashing text with CSS 3
...ynchronisation between the two - the fades will take a bit longer than the timer (and timers aren't reliable anyway) and eventually you'll likely end up with unbounded queue of animations queued up on the element. The correct approach would be to do without the timer and "recursively" call blinker...
How to print the ld(linker) search path
...dconfig are not correct because they refer to the paths searched by the runtime dynamic linker (i.e. whenever a program is executed), which is not the same as the path searched by ld (i.e. whenever a program is linked).
shar...
What are the use(s) for tags in Go?
... Excellent answer. Way more useful info in here than in the one with ten times this karma.
– Darth Egregious
Jul 1 '15 at 13:53
3
...
PHP: How to remove all non printable characters in a string?
..., 127-255 and removes it.
8 bit extended ASCII?
You fell into a Hot Tub Time Machine, and you're back in the eighties.
If you've got some form of 8 bit ASCII, then you might want to keep the chars in range 128-255. An easy adjustment - just look for 0-31 and 127
$string = preg_replace('/[\x00-\...
PHP - concatenate or directly insert variables in string
...
Just pointing out on the performance: time php -r '$string=""; for ($i=0;$i<199999;$i++){ $string = $string.$i; } print("Done!\n");' (Concatenation) actually loses by about 300 milliseconds (for 200.000 items, that's 1 miliseconf per thousand elements on your ...
Regex (grep) for multi-line search needed [duplicate]
...
Your fundamental problem is that grep works one line at a time - so it cannot find a SELECT statement spread across lines.
Your second problem is that the regex you are using doesn't deal with the complexity of what can appear between SELECT and FROM - in particular, it omits comma...
