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Get underlying NSData from UIImage
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NSData *imageData = UIImageJPEGRepresentation(image, 0.7); // 0.7 is JPG quality
or
NSData *imageData = UIImagePNGRepresentation(image);
Depending if you want your data in PNG format or JPG format.
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Boolean literals in PowerShell
...ts are true, for example. null, empty strings, empty arrays and the number 0 are false.
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pandas: multiple conditions while indexing data frame - unexpected behavior
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answered Mar 23 '14 at 13:02
DSMDSM
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Rails params explained?
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edited May 11 '17 at 0:15
answered Jul 30 '11 at 21:30
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Pick a random element from an array
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print(array.randomElement()!) // Using ! knowing I have array.count > 0
If you don't create the array and aren't guaranteed count > 0, you should do something like:
if let randomElement = array.randomElement() {
print(randomElement)
}
Swift 4.1 and below
Just to answer your questi...
How do I find files that do not contain a given string pattern?
... edited Mar 4 '15 at 17:39
t0r0X
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answered Nov 17 '09 at 11:47
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What is the difference between tree depth and height?
...ges from the node to the tree's root node.A root node will have a depth of 0.
The height of a node is the number of edges on the longest path from the node to a leaf.A leaf node will have a height of 0.
Properties of a tree:
The height of a tree would be the height of its root node,or equivalent...
iOS - How to set a UISwitch programmatically
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10
Use this code to solve on/off state problem in switch in iOS
- (IBAction)btnSwitched:(id)sender...
Why does the JavaScript need to start with “;”?
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edited May 9 '14 at 20:41
SQLMason
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answered Mar 20 '10 at...
Altering a column: null to not null
...is undesirable for several reasons, so I am looking to update all nulls to 0 and then set these columns to NOT NULL . Aside from changing nulls to 0 , data must be preserved.
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