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How expensive is the lock statement?
...e it takes to fetch/decode the instruction); and loading a single variable from (non-cached) memory into a register takes about 40ns. So 50ns is insanely, blindingly fast - you shouldn't worry about the cost of using lock any more than you'd worry about the cost of using a variable.
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Differences between Java 8 Date Time API (java.time) and Joda-Time
...urthermore: Both libraries are inspired by the design study "TimeAndMoney" from Eric Evans or ideas from Martin Fowler about domain driven style so they strive more or less for a fluent programming style (although not always perfect ;-)).
c) With both libraries we get a real calendar date type (cal...
Why can't an anonymous method be assigned to var?
...sal for an Eric Lippert book of SO answers. Suggested title: "Reflections From The Stack"
– Adam Rackis
Feb 17 '11 at 20:54
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What is a ViewModelLocator and what are its pros/cons compared to DataTemplates?
...sual practice is to have the Views find their ViewModels by resolving them from a dependency injection (DI) container. This happens automatically when the container is asked to provide (resolve) an instance of the View class. The container injects the ViewModel into the View by calling a constructor...
where is gacutil.exe?
... it installed.
As @devi mentioned
If you decide to grab gacutil files from existing installation, note
that from .NET 4.0 is three files: gacutil.exe gacutil.exe.config and
1033/gacutlrc.dll
share
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Swift and mutating struct
...answers WHY, by default, the properties of a value type cannot be modified from within its instance methods. you make hints that its because structs default to immutable, but i dont think that is true
– Joseph Knight
Jun 5 '14 at 19:49
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How do I get a reference to the app delegate in Swift?
... explain what setRoot() does and when to call it. e.g. is it ok to call it from a ViewController? From a Unit test where window is not set yet? More context would be great.
– Houman
Dec 24 '19 at 16:52
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Functional programming - is immutability expensive? [closed]
...nsider this reference implementation in Haskell (I don’t know Scala …) from the Haskell introduction:
qsort [] = []
qsort (x:xs) = qsort lesser ++ [x] ++ qsort greater
where lesser = (filter (< x) xs)
greater = (filter (>= x) xs)
The first disadvantage is the choice ...
How do I byte-compile everything in my .emacs.d directory?
...
You can use the --batch flag to recompile from the command line.
To recompile all, do
emacs --batch --eval '(byte-recompile-directory "~/.emacs.d")'
or to recompile a single file as from a Makefile,
emacs --batch --eval '(byte-compile-file "your-elisp-file.el")'...
Sound alarm when code finishes
...
This one seems to work on both Windows and Linux* (from this question):
def beep():
print("\a")
beep()
In Windows, can put at the end:
import winsound
winsound.Beep(500, 1000)
where 500 is the frequency in Herz
1000 is the duration in miliseconds
To work on ...