大约有 47,000 项符合查询结果（耗时：0.1051秒） [XML]
How do I find the last occurrence of a substring in an NSString?
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281
Use rangeOfString:options:, including NSBackwardsSearch in the options.
[@"abc def ghi abc de...
HashSet versus Dictionary w.r.t searching time to find if an item exists
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edited Apr 4 '14 at 12:55
Bernhard Barker
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mingw-w64 threads: posix vs win32
I'm installing mingw-w64 on Windows and there are two options: win32 threads and posix threads. I know what is the difference between win32 threads and pthreads but I don't understand what is the difference between these two options. I doubt that if I will choose posix threads it will prevent me fro...
How can I create a unique constraint on my column (SQL Server 2008 R2)?
I have SQL Server 2008 R2 and I want to set a unique column.
4 Answers
4
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what is the difference between sendStickyBroadcast and sendBroadcast in Android
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120
Here is what the Android SDK says about sendStickyBroadcast():
Perform a sendBroadcast(Inte...
Collection that allows only unique items in .NET?
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208
HashSet<T> is what you're looking for. From MSDN (emphasis added):
The HashSet<T&...
curl_exec() always returns false
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245
Error checking and handling is the programmer's friend. Check the return values of the initial...
What does “1 line adds whitespace errors” mean when applying a patch?
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128
You don't need to care.
The warning enacts a standard of cleanliness of text files in regard t...
Understanding :source option of has_one/has_many through of Rails
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245
Sometimes, you want to use different names for different associations. If the name you want to...
Shell script to delete directories older than n days
...rf
Which is a bit more efficient, because it amounts to:
rm -rf dir1 dir2 dir3 ...
as opposed to:
rm -rf dir1; rm -rf dir2; rm -rf dir3; ...
as in the -exec method.
With modern versions of find, you can replace the ; with + and it will do the equivalent of the xargs call for you, passing ...