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Ruby: extend self
...ways helps to think of extend as include inside the singleton class (also known as meta or eigen class).
You probably know that methods defined inside the singleton class are basically class methods:
module A
class << self
def x
puts 'x'
end
end
end
A.x #=> 'x'
Now th...
Split a module across several files
...threw out namespacing. Changing one file in a way unrelated to another can now break other files. Your use of 'use' becomes leaky (ie everything is like use super::*). You can't hide code from other files (which is important for unsafe-using safe abstractions)
– Demur Rumed
...
How to delete an old/unused Data Model Version in Xcode
...al 8". For me it appeared on two separate lines. I removed these lines and now it's completely removed from Xcode.
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kernel stack and user space stack
...tware RAID code being interrupted by network code with iptables active is known to trigger such in untuned older kernels ... solution is to increase kernel stack sizes for such workloads).
Does each process have its own kernel stack ?
Not just each process - each thread has its own kerne...
Difference between method and function in Scala
...l):
def apply(v1: T1, v2: T2): R
And that tell us all that there is to know about it. A function has an apply method which receives N parameters of types T1, T2, ..., TN, and returns something of type R. It is contra-variant on the parameters it receives, and co-variant on the result.
That varia...
Override compile flags for single files
...t that allows me to have one exception: foo.cpp (that one file uses Qt for now but long term I want to remove that dependency and I want to make sure not Qt creeps in anywhere else).
find_package(Qt5Core REQUIRED)
set(QT_INCLUDE_PROPERTIES "")
foreach(DIR ${Qt5Core_INCLUDE_DIRS})
set(QT_INCLUDE...
What is “lifting” in Scala?
...Stream[A]]. This can be converted to the monad transformer StreamT[IO, A]. Now you may wish to "lift" some other value an IO[B] perhaps to that it is also a StreamT. You could either write this:
StreamT.fromStream(iob map (b => Stream(b)))
Or this:
iob.liftM[StreamT]
this begs the question:...
When is a language considered a scripting language? [closed]
...finition of what "functional programming" is, is pretty clear, but nobody knows what a "functional programming language" is.
Functional programming or object-oriented programming are programming styles; you can write in a functional style or an object-oriented style in pretty much any language. For...
application/x-www-form-urlencoded or multipart/form-data?
...
READ AT LEAST THE FIRST PARA HERE!
I know this is 3 years too late, but Matt's (accepted) answer is incomplete and will eventually get you into trouble. The key here is that, if you choose to use multipart/form-data, the boundary must not appear in the file data ...
How to specify maven's distributionManagement organisation wide?
... and deployed to your local nexus so everyone has access to its artifact.
Now for all projects which you wish to use it, simply include this section:
<parent>
<groupId>your.company</groupId>
<artifactId>company-parent</artifactId>
<version>1.0.0</versio...