大约有 3,000 项符合查询结果（耗时：0.0222秒） [XML]
Using jQuery to center a DIV on the screen
...red Jan 22 '12 at 8:24
Juho VepsäläinenJuho Vepsäläinen
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Regular Expressions: Is there an AND operator?
...ed Jan 22 '09 at 18:07
Juha SyrjäläJuha Syrjälä
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How to download a single commit-diff from GitHub?
... answered Feb 20 '14 at 9:44
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Length of an integer in Python
... of 3: 746 ns per loop
timeit len(str(2**8))
1000000 loops, best of 3: 1.1 µs per loop
timeit math.log10(2**100)
1000000 loops, best of 3: 775 ns per loop
timeit len(str(2**100))
100000 loops, best of 3: 3.2 µs per loop
timeit math.log10(2**10000)
1000000 loops, best of 3: 844 ns per loop
timei...
How do I get the row count of a pandas DataFrame?
...[0] faster than len(df) or len(df.columns)? Since 1 ns (nanosecond) = 1000 µs (microsecond), therefore 1.17µs = 1170ns, which means it's roughly 3 times slower than 381ns
– itsjef
Mar 24 '18 at 3:19
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How to do a regular expression replace in MySQL?
...exp doesn't seem to have support for multibyte characters. regexp_replace('äöõü', 'ä', '') returns a long numeric string instead of real text.
– lkraav
Feb 20 '12 at 1:44
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How can I get this ASP.NET MVC SelectList to work?
I create a selectList in my controller, to display in the view.
23 Answers
23
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Version number comparison in Python
...(normalize(version1), normalize(version2))
This is the same approach as Pär Wieslander, but a bit more compact:
Here are some tests, thanks to "How to compare two strings in dot separated version format in Bash?":
assert mycmp("1", "1") == 0
assert mycmp("2.1", "2.2") < 0
assert mycmp("3.0.4...
How to get first 5 characters from string [duplicate]
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substr("Häagen-Dazs", 0, 5) == "Häag" - what am i doing wrong?
– user187291
Sep 24 '10 at 13:32
12
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How to make an Android device vibrate?
...el 26. Use vibrate(VibrationEffect) instead.
– Timo Bähr
Jan 23 '18 at 15:05
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