大约有 16,800 项符合查询结果(耗时:0.0340秒) [XML]

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Is there a real solution to debug cordova apps [closed]

I spent the last two days trying to figure out how to debug an HTML5 app I created using Cordova 3.2 and deployed to an Android 2.3 device. All the articles/posts I've seen provide hacks rather than real solutions :( and most of the time, none of them works for my case; debug the css styles and the ...
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A migration to add unique constraint to a combination of columns

What I need is a migration to apply unique constraint to a combination of columns. i.e. for a people table, a combination of first_name , last_Name and Dob should be unique. ...
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Select datatype of the field in postgres

How do I get datatype of specific field from table in postgres ? For example I have the following table, student_details ( stu_id integer, stu_name varchar(30 ), joined_date timestamp ); ...
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How many random elements before MD5 produces collisions?

I've got an image library on Amazon S3. For each image, I md5 the source URL on my server plus a timestamp to get a unique filename. Since S3 can't have subdirectories, I need to store all of these images in a single flat folder. ...
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How to document class attributes in Python? [closed]

I'm writing a lightweight class whose attributes are intended to be publicly accessible, and only sometimes overridden in specific instantiations. There's no provision in the Python language for creating docstrings for class attributes, or any sort of attributes, for that matter. What is the expec...
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Why is there no SortedList in Java?

In Java there are the SortedSet and SortedMap interfaces. Both belong to the Java Collections framework and provide a sorted way to access the elements. ...
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Java: is there a map function?

I need a map function. Is there something like this in Java already? 6 Answers 6 ...
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Why isn't `int pow(int base, int exponent)` in the standard C++ libraries?

I feel like I must just be unable to find it. Is there any reason that the C++ pow function does not implement the "power" function for anything except float s and double s? ...
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Read-only list or unmodifiable list in .NET 4.0

From what I can tell, .NET 4.0 still lacks read-only lists. Why does the framework still lack this functionality? Isn't this one of the commonest pieces of functionality for domain-driven design ? ...
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了解 Boost Filesystem Library - C/C++ - 清泛网 - 专注C/C++及内核技术

了解 Boost Filesystem Library创建与平台无关的代码 缺乏定义良好的、用于处理文件系统操作的库,这一直是 C++ 语言存在的一个问题。过去,程序员必须使用本机 API 来解决此问题。通过本文您将了解一个提供安全、可移植且易用...