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How does Hadoop process records split across block boundaries?
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Interesting question, I spent some time looking at the code for the details and here are my thoughts. The splits are handled by the cl...
How do I analyze a program's core dump file with GDB when it has command-line parameters?
...ows crash scenario
Program terminated with signal 11, Segmentation fault.
#0 __strlen_ia32 () at ../sysdeps/i386/i686/multiarch/../../i586/strlen.S:99
99 ../sysdeps/i386/i686/multiarch/../../i586/strlen.S: No such file or directory.
in ../sysdeps/i386/i686/multiarch/../../i586/strlen.S
(gdb)...
Detect the Enter key in a text input field
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What's the difference between IEquatable and just overriding Object.Equals()?
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The main reason is performance. When generics were introduced in .NET 2.0 they were able to add a bunch of neat classes such as List<T>, Dictionary<K,V>, HashSet<T>, etc. These structures make heavy use of GetHashCode and Equals. But for value types this required boxing. IEquata...
Functional programming - is immutability expensive? [closed]
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Since there are a few misconceptions flying around here, I’d like to clarify some points.
T...
Difference between $(this) and event.target?
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305
There is a difference between $(this) and event.target, and quite a significant one. While this...
What is the meaning of polyfills in HTML5?
...ort CSS3 techniques you want).
Here's a good post:
http://remysharp.com/2010/10/08/what-is-a-polyfill/
Here's a comprehensive list of Polyfills and Shims:
https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-browser-Polyfills
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ios Upload Image and Text using HTTP POST
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多媒体组件 · App Inventor 2 中文网
...形状
设置文件选择器的形状，此属性的有效值为：
0（默认）
1 （圆形）
2（矩形）
3（椭圆形）。
如果设置了图像，则形状将不可见。
显示反馈
设置文件选择器指定 图像后被按压是否显示视觉反馈。...