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Detect Retina Display
...assume a device is running iOS4+ if the scale property exists, as the iPad 3.2 also contains this property.
On an iPad running iOS3.2, scale will return 1.0 in 1x mode, and 2.0 in 2x mode -- even though we know that device does not contain a Retina display. Apple changed this behavior in iOS4.2 for...
How do I keep Python print from adding newlines or spaces? [duplicate]
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answered Oct 31 '08 at 22:35
Greg HewgillGreg Hewgill
783k167167 gold badges10841084 silver badges12221222 bronze badges
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FontAwesome icons not showing. Why?
...s:
<link
href="http://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.3.0/css/font-awesome.css"
rel="stylesheet" type='text/css'>
If your page uses HTTPS, do you link to the font-awesome CSS using HTTPS (replace http:// with https:// in the link above).
Double check that you don't have ...
How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
...ce,
kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big);
CGColorSpaceRelease(colorSpace);
CGContextDrawImage(context, CGRectMake(0, 0, width, height), imageRef);
CGContextRelease(context);
// Now your rawData contains the image data in the RGBA8888 pixel f...
Printing 1 to 1000 without loop or conditionals
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How to get a random value from dictionary in python
...l work in Python 2.x where d.keys() is a list, but it won't work in Python 3.x where d.keys() is an iterator. You should do random.choice(list(d.keys())) instead.
– Duncan
Feb 1 '11 at 9:42
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const char* concatenation
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answered Jan 3 '10 at 14:05
codaddictcodaddict
395k7777 gold badges473473 silver badges507507 bronze badges
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Ruby - elegantly convert variable to an array if not an array already
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153
[*foo] or Array(foo) will work most of the time, but for some cases like a hash, it messes it up...
Does MongoDB's $in clause guarantee order
... { "$eq": [ "$_id", 2 ] },
2,
3
]}
]}
}},
// Sort the results
{ "$sort": { "weight": 1 } }
])
So that would be the expanded form. What basically happens here is that just as the array of values is passed to $in you also...