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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...
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...
What are the most common naming conventions in C?
...ING_ID_PREFIX.
Struct names and typedef's in camelcase: GtkWidget, TrackingOrder.
Functions that operate on structs: classic C style: gtk_widget_show(), tracking_order_process().
Pointers: nothing fancy here:
GtkWidget *foo, TrackingOrder *bar.
Global variables: just don't use global variables. They...
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...
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
...
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...
Sound alarm when code finishes
...os.system('play -nq -t alsa synth {} sine {}'.format(duration, freq))
In order to use this example, you must install sox.
On Debian / Ubuntu / Linux Mint, run this in your terminal:
sudo apt install sox
On Mac, run this in your terminal (using macports):
sudo port install sox
Speech on Mac
...
How does the ARM architecture differ from x86? [closed]
...on the context of laptops. For laptops their typical power goal was on the order of 6 watts for a fairly small laptop. More recently (much more recently) they've started to target mobile devices (phones, tablets, etc.) For this market, they're looking at a couple of watts or so at most. They seem to...
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 ...
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 } )
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