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Optimal number of threads per core
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I know this question is rather old, but things have evolved since 2009.
There are two things to take into account now: the number of cores, and the number of threads that can run within each core.
With Intel processors, the nu...
Netty vs Apache MINA
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Update: Just use Netty. It is now a mature project with all the bells and whistles required for building protocol clients and servers. It has strong community with several active contributors backed by enterprises. It also has a book, 'Netty in Action'. I...
data.table vs dplyr: can one do something well the other can't or does poorly?
...ters. As Grace Hopper would say, Mind your nanoseconds!
3. Syntax
Let's now look at syntax. Hadley commented here:
Data tables are extremely fast but I think their concision makes it harder to learn and code that uses it is harder to read after you have written it ...
I find this remark poi...
How to convert OutputStream to InputStream?
...a OutputStream and second one, which accepts only InputStream . Do you know how to convert OutputStream to InputStream (not vice versa, I mean really this way) that I will be able to connect these two parts?
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Why does String.split need pipe delimiter to be escaped?
...nks for this explanation. I almost always forget to use the double escape. Now that I know why it's that way, it will surely help me remember from now on.
– sufinawaz
Nov 3 '14 at 21:10
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Providing a default value for an Optional in Swift?
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Update
Apple has now added a coalescing operator:
var unwrappedValue = optionalValue ?? defaultValue
The ternary operator is your friend in this case
var unwrappedValue = optionalValue ? optionalValue! : defaultValue
You could also pr...
How do I address unchecked cast warnings?
...eally should have the generic parameters <String, String>. You must know beforehand what the parameters should be (or you'll find out when you get a ClassCastException). This is why the code generates a warning, because the compiler can't possibly know whether is safe.
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Go build: “Cannot find package” (even though GOPATH is set)
...o a subfolder of $GOPATH/src, e.g. $GOPATH/src/test
go install test should now create an executable in $GOPATH/bin that can be called by typing test into your terminal.
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What's the difference between tag and release?
...email to support@github.com or this contact form.
Update:
The GitHub API now allows to manipulate Releases. See the announcement.
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CSS image resize percentage of itself?
... This doesn't resize the image to 50% of it's original size, it's now 50% of the parent of img_wrap..
– Wesley
May 25 '12 at 9:46
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