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Bash script to receive and repass quoted parameters
... "$@" works with any Bourne shell or Bourne shell derivative (from 1978 onwards), including Korn and Bash. Probably 95% of the time, using "$@" is correct and $* is wrong.
– Jonathan Leffler
Jan 16 '09 at 8:03
...
How to get current working directory in Java?
... useful in most cases.
The following will print out the current directory from where the command was invoked regardless where the .class or .jar file the .class file is in.
public class Test
{
public static void main(final String[] args)
{
final String dir = System.getProperty("use...
When should assertions stay in production code? [closed]
...mments, which is a helpful way of thinking about them. They are a step up from comments because they are constantly machine tested during development, but they should always be meaningful to human readers first. Just like comments, they should not be part of logic or final execution. Just like co...
How to use the 'og' (Open Graph) meta tag for Facebook share
Facebook fetches all pictures from my site.
3 Answers
3
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.NET data structures: ArrayList, List, HashTable, Dictionary, SortedList, SortedDictionary — Speed,
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from msdn, it seems like sortedList implement IDictionnary - not IList
– Haim Bendanan
Nov 23 '16 at 18:45
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Smart pointers: who owns the object? [closed]
...er. When you assign one pointer to another, the second 'steals' the object from the first.
I have my own implementation for these, but they are also available in Boost.
I still pass objects by reference (const whenever possible), in this case the called method must assume the object is alive only ...
How do you run your own code alongside Tkinter's event loop?
...
Use the after method on the Tk object:
from tkinter import *
root = Tk()
def task():
print("hello")
root.after(2000, task) # reschedule event in 2 seconds
root.after(2000, task)
root.mainloop()
Here's the declaration and documentation for the after m...
Is there a performance difference between a for loop and a for-each loop?
...
From Item 46 in Effective Java by Joshua Bloch :
The for-each loop, introduced in
release 1.5, gets rid of the clutter
and the opportunity for error by
hiding the iterator or index variable
completely. The resulti...
How to find unused/dead code in java projects [closed]
...anguage which could do MUCH better. With a staticly typed language (aside from reflection) you can know for sure exactly which methods are used and which are not, this is one of the biggest advantages of a statically typed language and you should use it rather than the fallable method as described ...
How efficient is locking an unlocked mutex? What is the cost of a mutex?
... it causes to much of the inter-CPU/core traffic to flush the mutex memory from the data cache of other CPUs to guarantee the cache coherency. The cache flushes are like light-weight interrupts and handled by CPUs transparently - but they do introduce so called stalls (search for "stall").
And the ...