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Difference between volatile and synchronized in Java
...zed with respect to memory visibility and instruction ordering (see http://www.cs.umd.edu/users/pugh/java/memoryModel/jsr-133-faq.html#volatile). For the purposes of visibility, each access to a volatile field acts like half a synchronization.
Under the new memory model, it is still true that v...
What are the best practices for using a GUID as a primary key, specifically regarding performance?
...ely (If you never complete the app what difference does the rest make :).
https://web.archive.org/web/20120812080710/http://databases.aspfaq.com/database/what-should-i-choose-for-my-primary-key.html
P.S. I'm not sure why you would use a Composite PK or what benefit you believe that would give you....
Where can I find my .emacs file for Emacs running on Windows?
...
Copy and pasted from the Emacs FAQ, http://www.gnu.org/software/emacs/windows/:
Where do I put my init file?
On Windows, the .emacs file may be called _emacs for backward compatibility with DOS and FAT filesystems where filenames could not start with a dot. Some use...
How to convert a SVG to a PNG with ImageMagick?
...convert -version
Version: ImageMagick 6.8.9-8 Q16 x86_64 2014-12-17 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2014 ImageMagick Studio LLC
Features: DPC Modules
Delegates: bzlib cairo fontconfig freetype jng jpeg lcms ltdl lzma png rsvg tiff xml zlib
It should display rsvg.
...
Is “else if” faster than “switch() case”? [duplicate]
... both faster and better practise.
There are various links such as (http://www.blackwasp.co.uk/SpeedTestIfElseSwitch.aspx) that show benchmark tests comparing the two.
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Passing additional variables from command line to make
...which is included in the GNU Make book by Stallman and McGrath (see http://www.chemie.fu-berlin.de/chemnet/use/info/make/make_7.html). It provides the example:
archive.a: ...
ifneq (,$(findstring t,$(MAKEFLAGS)))
+touch archive.a
+ranlib -t archive.a
else
ranlib archive.a
en...
How to set Sqlite3 to be case insensitive when string comparing?
... and comparisons.
This can be used to make 'VOILA' LIKE 'voilà'.
http://www.sqlite.org/capi3ref.html#sqlite3_create_collation
The collating function must return an integer that is negative, zero, or positive if the first string is less than, equal to, or greater than the second, respectively....
Find out if string ends with another string in C++
...
Use boost::algorithm::ends_with (see e.g. http://www.boost.org/doc/libs/1_34_0/doc/html/boost/algorithm/ends_with.html ):
#include <boost/algorithm/string/predicate.hpp>
// works with const char*
assert(boost::algorithm::ends_with("mystring", "ing"));
// also work...
Java: difference between strong/soft/weak/phantom reference
...now the object to which it pointed is dead.
This text was extracted from: https://weblogs.java.net/blog/2006/05/04/understanding-weak-references
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Short circuit Array.forEach like calling break
...specification that the index k starts at 0 and is incremented by 1: http://www.ecma-international.org/ecma-262/6.0/#sec-array.prototype.every
– XP1
Jun 26 '17 at 0:51
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