大约有 900 项符合查询结果（耗时：0.0306秒） [XML]
How can I count text lines inside an DOM element? Can I?
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}
countLines(document.getElementById("foo"));
div
{
padding:100px 0 10% 0;
background: pink;
box-sizing: border-box;
border:30px solid red;
}
<div id="foo">
x<br>
x<br>
x<br>
x<br>
</div>
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Want to find records with no associated records in Rails
... 813ms / query
dmarkow's approach (:without_friends_v2) 891ms / query (~ 10% slower)
But then it occurred to me that I don't need the call to DISTINCT()... I'm looking for Person records with NO Contacts - so they just need to be NOT IN the list of contact person_ids. So I tried this scope:
sc...
Add a common Legend for combined ggplots
...n="bottom"))
# add the legend underneath the row we made earlier. Give it 10% of the height
# of one plot (via rel_heights).
p <- plot_grid( prow, legend_b, ncol = 1, rel_heights = c(1, .2))
p
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Fast way to get image dimensions (not filesize)
...of them have EXIF data then the slowness of using ImageMagick on the other 10% will be acceptable.
– Andy Lester
Jul 17 '13 at 17:53
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Why should you use an ORM? [closed]
...ules are not easily formed in declarative constraints. E.g. "customer gets 10% off entire order the first time they buy more than three pairs of slacks from the same brand." How would you put that business rule into the database (keep in mind an answer involving stored procedures is clunky).
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CSS hexadecimal RGBA?
...t HEX prefix
0% 0.00 00
5% 12.75 0C
10% 25.50 19
15% 38.25 26
20% 51.00 33
25% 63.75 3F
30% 76.50 4C
35% 89.25 59
40% 102.00 66
45% ...
An error occurred while validating. HRESULT = '8000000A'
...t time. Not nice, but it works most of the time (error rate is down from ~ 10% to ~ 1%).
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Convert two lists into a dictionary
...small lists. For larger lists (10k random numbers), the dict call is about 10% faster.
I presume we mean dict(zip(... with 10k random numbers. That does sound like a fairly unusual use case. It does makes sense that the most direct calls would dominate in large datasets, and I wouldn't be surpris...
How much faster is Redis than mongoDB?
...ed. The graph in the article states that Redis is behind MongoDB by about 10% in this specific use case.
Redis comes with a built in benchmark that will analyze the performance of the machine you are on. There is a ton of raw data from it at the Benchmark wiki for Redis. But you might have to loo...
Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
...y day. I had a running make in an ssl-session taking an hour for the first 10% and I really didn't want to keep my laptop running for another 10 hours. But am I right to assume your redirect for stderr should read p open("/tmp/myerrlog", 2) ?
– GerardV
Oct...