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What's the difference between dynamic (C# 4) and var?

I had read a ton of articles about that new keyword that is shipping with C# v4, but I couldn't make out the difference between a "dynamic" and "var". ...
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Elegant way to check for missing packages and install them?

I seem to be sharing a lot of code with coauthors these days. Many of them are novice/intermediate R users and don't realize that they have to install packages they don't already have. ...
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Better way to get type of a Javascript variable?

Is there a better way to get the type of a variable in JS than typeof ? It works fine when you do: 11 Answers ...
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Linux 进程卡住了怎么办? - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

Linux 进程卡住了怎么办?howto-solve-d-status-process在我们使用 Linux 系统时,如果网络或者磁盘等 I O 出问题,会发现进程卡住了,即使用 kill -9 也无法杀掉进程,很多常用的调试工具,比如 strace, pstack 等也都失灵了 在我们使用...
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How to get equal width of input and select fields

On the form, I have one select and two input fields. These elements are vertically aligned. Unfortunately, I can't get equal width of these elements. ...
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How does MongoDB sort records when no sort order is specified?

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How do I use vi keys in ipython under *nix?

Currently in Bash I use set -o vi to enable vi mode in my bash prompt. 6 Answers 6 ...
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When should I use Arrow functions in ECMAScript 6?

The question is directed at people who have thought about code style in the context of the upcoming ECMAScript 6 (Harmony) and who have already worked with the language. ...
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Grepping a huge file (80GB) any way to speed it up?

This has been running for an hour on a fairly powerful linux server which is otherwise not overloaded. Any alternative to grep? Anything about my syntax that can be improved, (egrep,fgrep better?) ...
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LEFT OUTER JOIN in LINQ

How to perform left outer join in C# LINQ to objects without using join-on-equals-into clauses? Is there any way to do that with where clause? Correct problem: For inner join is easy and I have a solution like this ...