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Changing UIImage color
...e.width, image.size.height));
UIImage *coloredImg = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
Swift:
let color: UIColor = <# UIColor #>
let image: UIImage = <# UIImage #> // Image to mask with
UIGraphicsBeginImageContextWithOptions...
How to get a specific output iterating a hash in Ruby?
...b, :d] => [2, 3, 4]
# [:a, :e] => 5
# [:f] => 6
Here is example from the question itself:
hash = {
1 => ["a", "b"],
2 => ["c"],
3 => ["a", "d", "f", "g"],
4 => ["q"]
}
hash.each(recursive=false) do |key, value|
puts "#{key} => #{value}"
...
Grep not as a regular expression
...
From gnu.org/software/grep/manual/grep.html : "-F : Interpret the pattern as a list of fixed strings (instead of regular expressions), separated by newlines, any of which is to be matched. (-F is specified by POSIX.)"
...
warning: implicit declaration of function
... you have given the prototype check that it isn't just a typo. Also if its from an external library check that you have included it.
– smitec
Dec 9 '11 at 3:53
1
...
PostgreSQL Connection URL
...ord]@][netloc][:port][/dbname][?param1=value1&...]
Here are examples from same document
postgresql://
postgresql://localhost
postgresql://localhost:5432
postgresql://localhost/mydb
postgresql://user@localhost
postgresql://user:secret@localhost
postgresql://other@localhost/otherdb?connect_time...
Check if an element's content is overflowing?
...llHeight to element.clientHeight should do the task.
Below are the images from MDN explaining Element.scrollHeight and Element.clientHeight.
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Log4Net, how to add a custom field to my logging
...onfigure();
log4net.ThreadContext.Properties[ "myContext" ] = "Logging from Main";
Log.Info( "this is an info message" );
Console.ReadLine();
}
2) Add the parameter definition for the custom column:
<log4net>
<appender name="ConsoleAppender" type="log4net.Appender...
Custom attributes in styles.xml
...(sorry, I can't find the reference page for this…) Except for attributes from android namespace, you should only indicate the attribute name.
– pr-shadoko
Apr 29 '16 at 8:02
...
HTML.ActionLink vs Url.Action in ASP.NET Razor
...
I know this is an old post, but something learned from experience. Url.Action is much more performat than Html.ActionLink. I had a list of 6,000 items that had 2 Html.ActionLinks. It took 6,600ms to render the list. Without the Html.ActionLinks it took 52ms. Using Url.Action...
Check if a string contains a string in C++
... count is set, but the length of strings within each haystack is increased from 10 in the beginning to 10240 in the end. Most of the time the program spends actually generating random strings, but that is to be expected.
The output is:
Generating 200000 random haystacks of size 10
Starting std::st...