大约有 16,000 项符合查询结果(耗时:0.0415秒) [XML]

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Why does integer division in C# return an integer and not a float?

...nteger division in C# returns an integer and not a float? What is the idea behind it? (Is it only a legacy of C/C++?) 7 Ans...
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How to maintain a Unique List in Java?

How to create a list of unique/distinct objects (no duplicates) in Java? 7 Answers 7 ...
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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?

... chaoschaos 113k3030 gold badges288288 silver badges304304 bronze badges ...
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Angular.js: How does $eval work and why is it different from vanilla eval?

I was curious about the $scope.$eval you so often see in directives, so I checked out the source and found the following in rootScope.js : ...
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Why use prefixes on member variables in C++ classes

A lot of C++ code uses syntactical conventions for marking up member variables. Common examples include 29 Answers ...
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Transform DateTime into simple Date in Ruby on Rails

I have a datetime column in db that I want to transform into a simple date when I show it to users. 6 Answers ...
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How to use Class in Java?

There's a good discussion of Generics and what they really do behind the scenes over at this question , so we all know that Vector<int[]> is a vector of integer arrays, and HashTable<String, Person> is a table of whose keys are strings and values Person s. However, what stumps me ...
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How do I deep copy a DateTime object?

...Y')); Update: If you want to copy rather than reference an existing DT object, use clone, not =. $a = clone $b; share | improve this answer | follow | ...
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Why is conversion from string constant to 'char*' valid in C but invalid in C++

... Up through C++03, your first example was valid, but used a deprecated implicit conversion--a string literal should be treated as being of type char const *, since you can't modify its contents (without causing undefined behavior). As of C++11, the implicit conversion that...
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How do I write LINQ's .Skip(1000).Take(100) in pure SQL?

... In SQL Server 2005 and above you can use ROW_NUMBER function. eg. USE AdventureWorks; GO WITH OrderedOrders AS ( SELECT SalesOrderID, OrderDate, ROW_NUMBER() OVER (ORDER BY OrderDate) AS 'RowNumber' FROM Sales.SalesOrderHeader ) SELEC...