大约有 18,000 项符合查询结果(耗时:0.0356秒) [XML]

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BigDecimal setScale and round

... One important point that is alluded to but not directly addressed is the difference between "precision" and "scale" and how they are used in the two statements. "precision" is the total number of significant digits in a number. ...
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Number of occurrences of a character in a string [duplim>catm>e]

I am trying to get the number of occurrences of a certain character such as & in the following string. 6 Answers ...
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Alter MySQL table to add comments on columns

I have been checking the MySQL Documentation for ALTER TABLE and it does not seem to include a way to add or modify a comment to a column. How can I do this? ...
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Switch to another Git tag

... Clone the repository as normal: git clone git://github.com/rspec/rspec-tmbundle.git RSpec.tmbundle Then checkout the tag you want like so: git checkout tags/1.1.4 This will checkout out the tag in a 'detached HEAD' state. In this state, "you can ...
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Numpy how to iterate over columns of array?

Suppose I have and m x n array. I want to pass each column of this array to a function to perform some operation on the entire column. How do I iterate over the columns of the array? ...
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Logback to log different messages to two files

I am using logback/slf4j to do my logging. I want to parse my log file to analyze some data, so instead of parsing a great big file (mostly consisting of debug statements) I want to have two logger instances which each log to a separate file; one for analytics and one for all purpose logging. Does a...
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iPhone: Detecting user inactivity/idle time since last screen touch

Has anybody implemented a feature where if the user has not touched the screen for a certain time period, you take a certain action? I'm trying to figure out the best way to do that. ...
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Get local href value from anchor (a) tag

...e href value but directs it to a slightly different place than it would normally go. The tag looks like 6 Answers ...
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Python datetime - setting fixed hour and minute after using strptime to get day,month,year

I've successfully converted something of 26 Sep 2012 format to 26-09-2012 using: 3 Answers ...
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json.net has key method?

If my response has key "error" I need to process error and show warning box. 3 Answers ...