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Difference between local and global indexes in DynamoDB
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...址）：http://mozilla.github.io/pdf.js/
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前言
英文是github上的原文，找不到中文资料，我根据自己理解翻译的，有些词意思拿不准就直接把单词留在原地了，看这个文档应该...
Learning Python from Ruby; Differences and Similarities
...l read and write access to variables from the outer scope.
Python has list comprehensions, which are pretty expressive. For example, if you have a list of numbers, you can write
[x*x for x in values if x > 15]
to get a new list of the squares of all values greater than 15. In Ruby, you'd hav...
How does one remove an image in Docker?
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Ah, i didn't know about the command for "remove all existing container". Had written own: docker ps -a | sed -r 's/^(\w+).*/\1/g' | sed -r 's/^CONTAINER//' | sed -r 's/^(\w+)/docker rm \1/g' | awk 'system($0)' Thanks !
– Anurag
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Are the days of passing const std::string & as a parameter over?
... edited May 23 '17 at 12:18
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answered Apr 19 '12 at 16:41
Nicol BolasNicol Bo...
What is an OS kernel ? How does it differ from an operating system? [closed]
...ialized processes running on top of them. In that case the kernel itself becomes the OS itself.
I think you can draw the line at what the majority of the applications running on top of that OS do require. If most of them require only kernel, the kernel is the OS, if most of them require X Window Sy...
LINQ's Distinct() on a particular property
...new { p.Id, p.Name });
Untested, but it should work (and it now at least compiles).
It assumes the default comparer for the keys though - if you want to pass in an equality comparer, just pass it on to the HashSet constructor.
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Declaring and initializing variables within Java switches
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From http://www.coderanch.com/t/447381/java-programmer-SCJP/certification/variable-initialization-within-case-block
Declarations are processed at compile time and do not depend on the
execution flow of your code. Since value is dec...
How to fix PCH error?
... Worked for me, except it was under Product > Clean and no need for the command key. (Xcode 4.6.1)
– Steve Haley
Mar 20 '13 at 17:35
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Get size of all tables in database
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