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Load image from url
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URL url = new URL("http://image10.bizrate-images.com/resize?sq=60&uid=2216744464");
Bitmap...
Difference between CPPFLAGS and CXXFLAGS in GNU Make
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CPPFLAGS is supposed to be for flags for the C PreProcessor; CXXFLAGS is for flags for the C++...
Run a callback only if an attribute has changed in Rails
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200
Rails 5.1+
class Page < ActiveRecord::Base
before_save :do_something, if: :will_save_cha...
Heap vs Binary Search Tree (BST)
...0/CS-TR-74-460.pdf
WSU slides: http://www.eecs.wsu.edu/~holder/courses/CptS223/spr09/slides/heaps.pdf
Intuitive argument:
bottom tree levels have exponentially more elements than top levels, so new elements are almost certain to go at the bottom
heap insertion starts from the bottom, BST must st...
Simplest/Cleanest way to implement singleton in JavaScript?
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What is the python “with” statement designed for?
...s will go to /tmp/log.txt
print "Test entry 1"
print "Test entry 2"
# back to the normal stdout
print "Back to normal stdout again"
And finally, another example that creates a temporary folder and cleans it up when leaving the context:
from tempfile import mkdtemp
from shutil import rmt...
How does Google's Page Speed lossless image compression work?
...hat.
(N.B.: The optipng command line tool does that too if you provide -o 2 through -o 7)
For JPEG files, they use jpeglib with the following options:
JpegCompressionOptions()
: progressive(false), retain_color_profile(false),
retain_exif_data(false), lossy(false) {}
Similarly,...
How to use MDC with thread pools?
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answered Oct 12 '13 at 2:02
jlevyjlevy
2,26811 gold badge1313 silver badges99 bronze badges
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Tool for generating railroad diagram used on json.org [closed]
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answered Aug 22 '11 at 5:22
Peter AjtaiPeter Ajtai
52.9k1111 gold badges117117 silver badges138138 bronze badges
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How efficient is locking an unlocked mutex? What is the cost of a mutex?
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123
I have the choice in between either having a bunch of mutexes or a single one for an object....