大约有 47,000 项符合查询结果（耗时：0.0521秒） [XML]
How do you split a list into evenly sized chunks?
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How does RegexOptions.Compiled work?
... + @"(\.[^<>()[\]\\.,;:\s@""]+)*)|("".+""))@"
+ @"((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}"
+ @"\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+"
+ @"[a-zA-Z]{2,}))$";
string[] numbers = new string[] {"1","two", "8378373", "38737", "3873783z"};
string[] emails = new string[] {...
Applying a function to every row of a table using dplyr?
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edited Aug 6 '19 at 3:20
answered Jul 14 '14 at 0:20
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How can I get nth element from a list?
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156
Look here, the operator used is !!.
I.e. [1,2,3]!!1 gives you 2, since lists are 0-indexed.
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You have already activated rake 0.9.0, but your Gemfile requires rake 0.8.7
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edited Jul 12 '12 at 21:24
jackr
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a...
Custom numeric format string to always display the sign
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301
Yes, you can.
There is conditional formatting. See Conditional formatting in MSDN
eg:
string...
postgresql return 0 if returned value is null
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use coalesce
COALESCE(value [, ...])
The COALESCE function returns the first of its argume...
How can I generate a diff for a single file between two branches in github
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GitHub only exposes the way to show diff between two commits.
Provided those tags actually point...
GLib compile error (ffi.h), but libffi is installed
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edited Apr 22 at 14:44
Scott Skiles
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ans...
PHP Foreach Pass by Reference: Last Element Duplicating? (Bug?)
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After the first foreach loop, $item is still a reference to some value which is also being use...