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What is the benefit of using $() instead of backticks in shell scripts?
...utomatically relicense away from SO defaults (CC-BY-SA or MIT licenses) in order to allow for such warranties or fitness of purpose. I would instead reuse code on SO at my own risk, and vote contributions according to helpfulness, technical merits, etc.
– chrstphrchvz
...
Benchmarking (python vs. c++ using BLAS) and (numpy)
...use of a bug you have to re-create the shared library after building it in order to use it with numpy.
In addition to this building it for multiple target plattform didn't work for some reason. So I had to create an .so file for each platform for which i want to have an optimized libgoto2.so file. ...
MongoDB logging all queries
...ystem profile collection for all queries that took longer than one second, ordered by timestamp descending will be
db.system.profile.find( { millis : { $gt:1000 } } ).sort( { ts : -1 } )
share
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Scala: Abstract types vs generics
...ed type abstraction
abstract class MaxCell extends AbsCell {
type T <: Ordered { type O = T }
def setMax(x: T) = if (get < x) set(x)
}
Here, the type declaration of T is constrained by an upper type bound which consists of a class name Ordered and a refinement { type O = T }.
The upper...
std::string formatting like sprintf
...ed output and will not calculate the outputs length if that occurs.
So in order to get rid of the deprecation warnings during compilation, you can insert the following line at the top of the file which contains the use of _snprintf:
#pragma warning(disable : 4996)
Final thoughts
A lot of answ...
How to optimize imports automatically after each save in IntelliJ IDEA
...: that can be fixed by requiring all imports to be used and having a fixed order of imports (both of which IDEs can easily do, so it should not add work for anyone). Then the only diffs in imports are when imports actually change.
– Joachim Sauer
Jan 22 '15 at ...
How to change Git log date formats
...ke:
git config --global alias.lg "log --graph --decorate
-30 --all --date-order --date=format:'%Y-%m-%d %H:%M:%S'
--pretty=format:'%C(cyan)%h%Creset %C(black bold)%ad%Creset%C(auto)%d %s'"
I haven't been able to find this in documentation anywhere (if someone knows where to find it, please comme...
Why is Linux called a monolithic kernel?
...onolithic sub-systems need to synchronize multiple values at one time. In order to do this, they must use locks and will suffer from Amdahl's law when extended to parallel architectures. The counter is that microkernels result in lots of IPC messages.
A major development is the use of lock-free p...
Left Align Cells in UICollectionView
...CGFloat maxY = -1.0f;
//this loop assumes attributes are in IndexPath order
for (UICollectionViewLayoutAttributes *attribute in attributes) {
if (attribute.frame.origin.y >= maxY) {
leftMargin = self.sectionInset.left;
}
attribute.frame = CGRectMake(l...
NoSQL (MongoDB) vs Lucene (or Solr) as your database
...tially update a document in solr. You have to re-post all of the fields in order to update a document.
And performance matters. If you do not commit, your change to solr does not take effect, if you commit every time, performance suffers.
There is no transaction in solr.
As solr has these disadvanta...