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移动前端开发之viewport的深入理解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，只有明白了viewport的概念以及弄清楚了跟viewport有关的me...在移动设备上进行网页的重构或开发，首先得搞明白的就是移动设备上的viewport了，只有明白了viewport的概念以及弄清楚了跟viewport有关的meta标签的使用，才能更好地让...
Does C++ support 'finally' blocks? (And what's this 'RAII' I keep hearing about?)
...nstead supports RAII: "Resource Acquisition Is Initialization" -- a poor name† for a really useful concept.
The idea is that an object's destructor is responsible for freeing resources. When the object has automatic storage duration, the object's destructor will be called when the block in whi...
Why must jUnit's fixtureSetup be static?
I marked a method with jUnit's @BeforeClass annotation, and got this exception saying it must be static. What's the rationale? This forces all my init to be on static fields, for no good reason as far as I see.
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When should I use RequestFactory vs GWT-RPC?
...t to get started with, because you write fewer lines of code and use the same class on both the client and the server. You might create a Person class with a bunch of getters and setters and maybe some simple business logic for further slicing-and-dicing of the data in the Person object. This work...
Use of Finalize/Dispose method in C#
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The recommended IDisposable pattern is here. When programming a class that uses IDisposable, generally you should use two patterns:
When implementing a sealed class that doesn't use unmanaged resources, you simply implement a Dispose...
How to read a .xlsx file using the pandas Library in iPython?
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I usually create a dictionary containing a DataFrame for every sheet:
xl_file = pd.ExcelFile(file_name)
dfs = {sheet_name: xl_file.parse(sheet_name)
for sheet_name in xl_file.sheet_names}
Update: In pandas version 0.21.0+ you will get this behavior more clea...
When to use , tag files, composite components and/or custom components?
...ude> and <ui:decorate>) if you want to split main page layout fragments into reuseable templates. E.g. header, menu, content, footer, etc.
Examples:
How to include another XHTML in XHTML using JSF 2.0 Facelets?
What is the real conceptual difference between ui:decorate and ui:include?
How ...
Difference between a Postback and a Callback
...ke with the postback...think of it as 'calling the server, and receiving some data back'.
With Asp.Net, the ViewState is not refreshed when a callback is invoked, unlike with a postback.
The reason that the whole page is posted with ASP.Net is because ASP.Net encloses the whole page in a <form&...
How do BitTorrent magnet links work?
For the first time I used a magnet link . Curious about how it works, I looked up the specs and didn't find any answers. The wiki says xt means "exact topic" and is followed by the format ( btih in this case) with a SHA1 hash. I saw base32 mentioned, knowing it's 5 bits per character and 32 char...
Checkout subdirectories in Git?
...heckouts still require you to download the whole repository, even though some of the files Git downloads won't end up in your working tree.
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