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How to capture UIView to UIImage without loss of quality on retina display
...age()
}
}
Usage:
let view = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
let image = UIImage.imageWithView(view)
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PHP + curl, HTTP POST sample code?
...T_POSTFIELDS actually curl makes slightly different type of POST. (Expect: 100-continue)
– Oleg Popov
Apr 14 '16 at 4:49
25
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List comprehension on a nested list?
...0', '30', '20'], ['30', '20', '30', '50', '10', '30', '20', '20', '20'], ['100', '100'], ['100', '100', '100', '100', '100'], ['100', '100', '100', '100']]
>>> new_list = [float(x) for xs in l for x in xs]
>>> new_list
[40.0, 20.0, 10.0, 30.0, 20.0, 20.0, 20.0, 20.0, 20.0, 30.0, 20...
Database sharding vs partitioning
... partition instead of 104 partitions. This query could potentially execute 100 times faster simply because of partition pruning.
Partitioning Strategies
Range
Hash
List
You can read their text and visualize their images which explain everything pretty well.
And lastly, it is important to under...
Extracting text OpenCV
...int i = 0; i < contours.size(); i++ )
if (contours[i].size()>100)
{
cv::approxPolyDP( cv::Mat(contours[i]), contours_poly[i], 3, true );
cv::Rect appRect( boundingRect( cv::Mat(contours_poly[i]) ));
if (appRect.width>appRect.height)
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write a shell script to ssh to a remote machine and execute commands
...e; hostname -f'
If the file hosts.txt has a large number of entries, say 100, then the parallelism option may also be set to 100 to ensure that the commands are run concurrently:
pssh -i -h hosts.txt -p 100 -t 0 sleep 10000
Options:
-I: Read input and sends to each ssh process.
-P: Tells p...
Delete multiple remote branches in git
...branch1> <branch2> <branch3>
Important: Only works on Git v1.7.0 and above.
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Random shuffling of an array
... be part of the package java.util. It's part of the standard library since v1.2.
– MauganRa
Feb 2 '17 at 16:04
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How to strip all non-alphabetic characters from string in SQL Server?
... function:
Create Function [dbo].[RemoveNonAlphaCharacters](@Temp VarChar(1000))
Returns VarChar(1000)
AS
Begin
Declare @KeepValues as varchar(50)
Set @KeepValues = '%[^a-z]%'
While PatIndex(@KeepValues, @Temp) > 0
Set @Temp = Stuff(@Temp, PatIndex(@KeepValues, @Temp), 1, ''...