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HTML5 Pre-resize images before uploading
...e.target.result}
reader.readAsDataURL(file);
var ctx = canvas.getContext("2d");
ctx.drawImage(img, 0, 0);
var MAX_WIDTH = 800;
var MAX_HEIGHT = 600;
var width = img.width;
var height = img.height;
if (width > height) {
if (width > MAX_WIDTH) {
height *= MAX_WIDTH / width;
width = ...
Python timedelta in years
...lace(year=from_date.year - years)
except ValueError:
# Must be 2/29!
assert from_date.month == 2 and from_date.day == 29 # can be removed
return from_date.replace(month=2, day=28,
year=from_date.year-years)
If it's 2/29, and 18 years ago...
Most efficient way of making an if-elif-elif-else statement when the else is done the most?
...':
the_thing = 1
elif something == 'that':
the_thing = 2
elif something == 'there':
the_thing = 3
else:
the_thing = 4
2.py
something = 'something'
options = {'this': 1, 'that': 2, 'there': 3}
for i in xrange(1000000):
the_thing = options.get(someth...
Can't update Macports (with Mac OS X Mavericks)
...
282
Install the "Command Line Tools" first:
sudo xcode-select --install
(Explicitly agreeing to...
dynamically add and remove view to viewpager
...
278
After figuring out which ViewPager methods are called by ViewPager and which are for other pur...
Dynamically replace the contents of a C# method?
...
220
Disclosure: Harmony is a library that was written and is maintained by me, the author of th...
Overriding id on create in ActiveRecord
...
answered Oct 2 '09 at 20:55
Jeff DeanJeff Dean
...
Can't install RMagick 2.13.1. Can't find MagickWand.h.
...
32 Answers
32
Active
...
Check number of arguments passed to a Bash script
...nts are valid. It allows a single argument or two.
[[ ($# -eq 1 || ($# -eq 2 && $2 == <glob pattern>)) && $1 =~ <regex pattern> ]]
For pure arithmetic expressions, using (( )) to some may still be better, but they are still possible in [[ ]] with its arithmetic operators...