大约有 5,215 项符合查询结果(耗时:0.0346秒) [XML]

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How to use NSCache

Can someone give an example on how to use NSCache to cache a string? Or anyone has a link to a good explanation? I can't seem to find any.. ...
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Implementing comparison operators via 'tuple' and 'tie', a good idea?

(Note: tuple and tie can be taken from Boost or C++11.) When writing small structs with only two elements, I sometimes tend to choose a std::pair , as all important stuff is already done for that datatype, like operator< for strict-weak-ordering. The downsides though are the pretty much us...
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Creating temporary files in bash

Are there objectively better ways to create temporary files in bash scripts? 5 Answers ...
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In which situations do we need to write the __autoreleasing ownership qualifier under ARC?

I'm trying to complete the puzzle. 3 Answers 3 ...
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Naming returned columns in Pandas aggregate function? [duplicate]

I'm having trouble with Pandas' groupby functionality. I've read the documentation , but I can't see to figure out how to apply aggregate functions to multiple columns and have custom names for those columns. ...
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How to modify a specified commit?

I usually submit a list of commits for review. If I have the following commits: 16 Answers ...
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Duplicate ID, tag null, or parent id with another fragment for com.google.android.gms.maps.MapFragme

I have an application with three tabs. 23 Answers 23 ...
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The SQL OVER() clause - when and why is it useful?

I read about that clause and I don't understand why I need it. What does the function Over do? What does Partitioning By do? Why can't I make a query with writing Group By SalesOrderID ? ...
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Why 0 is true but false is 1 in the shell?

The above will output 1 , which is contradictory with all other programming languages I know. 10 Answers ...
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Where can I learn how to write C code to speed up slow R functions? [closed]

What's the best resource for learning how to write C code for use with R? I know about the system and foreign language interfaces section of R extensions, but I find it pretty hard going. What are good resources (both online and offline) for writing C code for use with R? ...