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Is volatile expensive?

...Cookbook for Compiler Writers about the implementation of volatile, especially section "Interactions with Atomic Instructions" I assume that reading a volatile variable without updating it needs a LoadLoad or a LoadStore barrier. Further down the page I see that LoadLoad and LoadStore are effective...
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How to create a Custom Dialog box in android?

... 98 Another easy way to do this. step 1) create a layout with proper id's. step 2) use the follow...
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Colors in JavaScript console

...est: background: #444; color: #bada55; padding: 2px; border-radius:2px its all about the border-radius – Nick Sotiros Apr 30 '14 at 7:08 ...
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Bash tool to get nth line from a file

... 98 I have a unique situation where I can benchmark the solutions proposed on this page, and so I'm...
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Printing 1 to 1000 without loop or conditionals

...hings I have learned from experience over the years: use '\n' unless you really want to flush, use ++i unless you actually need the former value of i, pass by const reference unless you have a good reason not to... When developers stop thinking about these (or never even start), they will, sooner or...
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Why do we need private subnet in VPC?

...tioning as a "NAT instance," providing network address translation (technically, port address translation) for instances in other, private subnets, allowing those machines to use the NAT instance's public IP address for their outbound Internet access. The new managed NAT service does not fundamen...
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Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM

... the following way: First take 2 variables: COUNTER and VALUE. First set all registers to 0; Every time you receive an integer I, increment COUNTER and set VALUE to max(VALUE, I); Then send an ICMP echo request packet with data set to I to the router. Erase I and repeat. Every time you receive the...
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How to add texture to fill colors in ggplot2

...: make the border on one bar darker than the others using R EDIT: I've finally found time to give a brief example of this hack that allows at least 3 types of basic pattern in ggplot2. The code: Example.Data<- data.frame(matrix(vector(), 0, 3, dimnames=list(c(), c("Value", "Variable", "Fill")))...
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Can someone explain __all__ in Python?

I have been using Python more and more, and I keep seeing the variable __all__ set in different __init__.py files. Can someone explain what this does? ...
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How to find all the subclasses of a class given its name?

I need a working approach of getting all classes that are inherited from a base class in Python. 10 Answers ...