大约有 41,731 项符合查询结果(耗时:0.0424秒) [XML]

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What is the difference between map and flatMap and a good use case for each?

Can someone explain to me the difference between map and flatMap and what is a good use case for each? 16 Answers ...
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Does adding a duplicate value to a HashSet/HashMap replace the previous value

Please consider the below piece of code: 8 Answers 8 ...
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Removing leading zeroes from a field in a SQL statement

I am working on a SQL query that reads from a SQLServer database to produce an extract file. One of the requirements to remove the leading zeroes from a particular field, which is a simple VARCHAR(10) field. So, for example, if the field contains '00001A', the SELECT statement needs to return the...
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Python - Check If Word Is In A String

I'm working with Python v2, and I'm trying to find out if you can tell if a word is in a string. 11 Answers ...
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SPAN vs DIV (inline-block)

Is there any reason to use a <div style="display:inline-block"> instead of a <span> to layout a webpage? 6 ...
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What is the difference between ExecuteScalar, ExecuteReader and ExecuteNonQuery?

What are the different cases when we use these three? Where should I use one and where should I not? 9 Answers ...
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How do you serve a file for download with AngularJS or Javascript?

I have some text in a hidden textarea. When a button is clicked I would like to have the text offered for download as a .txt file. Is this possible using AngularJS or Javascript? ...
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Best practice to make a multi language application in C#/WinForms? [closed]

I've been looking into making applications suitable for multiple languages in C# since I need to work on a small project where this is the case. I have found basically two ways to do this: ...
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How to count TRUE values in a logical vector

In R, what is the most efficient/idiomatic way to count the number of TRUE values in a logical vector? I can think of two ways: ...
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Runnable with a parameter?

I have a need for a "Runnable that accepts a parameter" although I know that such runnable doesn't really exist. 7 Answers ...