大约有 40,000 项符合查询结果（耗时：0.0444秒） [XML]
Max length for client ip address [duplicate]
...esses are 128 bits (as opposed to 32 bits of IPv4 addresses). They are usually written as 8 groups of 4 hex digits separated by colons: 2001:0db8:85a3:0000:0000:8a2e:0370:7334. 39 characters is appropriate to store IPv6 addresses in this format.
Edit: However, there is a caveat, see @Deepak's ans...
How do I use $rootScope in Angular to store variables?
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Plus 1 for ... uh ... actually answering OP's question. (Although @MBielski and others are right).
– Rap
Aug 30 '15 at 19:37
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Why doesn't Java allow overriding of static methods?
...One was a concern with performance: there had been a lot of criticism of Smalltalk about it being too slow (garbage collection and polymorphic calls being part of that) and Java's creators were determined to avoid that. Another was the decision that the target audience for Java was C++ developers. M...
How to make a element expand or contract to its parent container?
...its parent container, in this case a <div> , no matter how big or small that container may be.
5 Answers
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How to execute a JavaScript function when I have its name as a string
...cript as a string. How do I convert that into a function pointer so I can call it later?
34 Answers
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'Incomplete final line' warning when trying to read a .csv file into R
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Are you really sure that you selected the .csv file and not the .xls file? I can only reproduce the error if I try to read in an .xls file. If I try to read in a .csv file or any other text file, it's impossible to recreate the error y...
Convert a list of characters into a string
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Use the join method of the empty string to join all of the strings together with the empty string in between, like so:
>>> a = ['a', 'b', 'c', 'd']
>>> ''.join(a)
'abcd'
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How to use DISTINCT and ORDER BY in same SELECT statement?
...lified):
FROM MonitoringJob
SELECT Category, CreationDate i.e. add a so called extended sort key column
ORDER BY CreationDate DESC
SELECT Category i.e. remove the extended sort key column again from the result.
So, thanks to the SQL standard extended sort key column feature, it is totally possib...
Reminder - \r\n or \n\r?
...Mac keyboards, or else you might later look at a PC keyboard, see the key called "Enter," and get the letter order wrong!
– Rob Kennedy
Jun 30 '11 at 19:36
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Do the JSON keys have to be surrounded by quotes?
...ion on (unquoted) reserved keywords as keys, so they just required quoting all keys.
– BallpointBen
Aug 21 '18 at 23:01
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