大约有 44,300 项符合查询结果（耗时：0.0417秒） [XML]
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...
Can't update Macports (with Mac OS X Mavericks)
...
282
Install the "Command Line Tools" first:
sudo xcode-select --install
(Explicitly agreeing to...
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...
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...