大约有 1,742 项符合查询结果（耗时：0.0292秒） [XML]
How can I use a carriage return in a HTML tooltip?
...x does display newlines in titles now (I'm using v25). It works with \n, \u000A and \x0A.
– Halcyon
Aug 12 '14 at 11:47
1
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NumPy array initialization (fill with identical values)
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For 10,000 elements, I observe the same thing (except that np.fill() does not exist and should be arr.fill()), with a difference of about 10 %. If the difference was bigger, I would raise an issue in the NumPy bug tracker. :) I pref...
Automatically deleting related rows in Laravel (Eloquent ORM)
...t the nicest way, but only 1 query, way better performance if a user has 1.000.000 photo's.
– Dirk
Jun 2 '13 at 12:54
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Scala best way of turning a Collection into a Map-by-key?
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On my machine for a list with 500,000 elements, this Scala code is about 20 times slower than the straight-forward Java approach (create HashMap with appropriate size, loop over list, put elements into map). For 5,000 elements, Scala ist about 8 times slower....
How to format a duration in java? (e.g format H:MM:SS)
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long duration = 4 * 60 * 60 * 1000;
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.SSS", Locale.getDefault());
log.info("Duration: " + sdf.format(new Date(duration - TimeZone.getDefault().getRawOffset())));
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Integer.toString(int i) vs String.valueOf(int i)
...lts
Average intToString = 5368ms, Average stringValueOf = 5689ms (for 100,000,000 operations)
public class StringIntTest {
public static long intToString () {
long startTime = System.currentTimeMillis();
for (int i = 0; i < 100000000; i++) {
String j = Integer....
Change name of iPhone app in Xcode 4
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-1,000,000, this answer is wrong and should be deleted. The correct answer is here.
– bobobobo
Aug 9 '13 at 22:03
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IEnumerable to string [duplicate]
...Here's some benchmarks I took on a dev machine and it looks about right.
1000000 iterations on a 300 character sequence on a 32-bit release build:
ToArrayString: 00:00:03.1695463
Concat: 00:00:07.2518054
StringBuilderChars: 00:00:03.1335455
StringBuilderStrings: 00:00:06.46...
What is the difference between background and background-color
...ecificity down the road.
I thought that when a browser sees background: #000;, they really see background: #000 none no-repeat top center;. I don't have a link to a resource here, but I recall reading this somewhere.
Ref : https://github.com/mdo/css-perf#background-vs-background-color
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SHA1 vs md5 vs SHA256: which to use for a PHP login?
...oint some of you are missing is that it doesn't matter if the password is 1000% secure when all the other data is clear-text. E.g., if the entire database is compromised, then the hacker now has all the clear-text credit card numbers. Yes, many people use the same password on different web-sites, bu...