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How to get the process ID to kill a nohup process?
...task in the background, the background operator (&) will give you the PID at the command prompt. If your plan is to manually manage the process, you can save that PID and use it later to kill the process if needed, via kill PID or kill -9 PID (if you need to force kill). Alternatively, you can f...
Function Pointers in Java
...flection to do it.
Pass as parameter the object and the method name (as a string) and then invoke the method. For example:
Object methodCaller(Object theObject, String methodName) {
return theObject.getClass().getMethod(methodName).invoke(theObject);
// Catch the exceptions
}
And then use ...
LINQ order by null column where order is ascending and nulls should be last
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The solution for string values is really weird:
.OrderBy(f => f.SomeString == null).ThenBy(f => f.SomeString)
The only reason that works is because the first expression, OrderBy(), sort bool values: true/false. false result go first...
Make a UIButton programmatically in Swift
...t practices in Swift 2.2. #selector() should be used rather than a literal string which is deprecated.
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How to calculate the SVG Path for an arc (of a circle)
....y
].join(" ");
return d;
}
to use
document.getElementById("arc1").setAttribute("d", describeArc(200, 400, 100, 0, 180));
and in your html
<path id="arc1" fill="none" stroke="#446688" stroke-width="20" />
Live demo
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Android: How to Programmatically set the size of a Layout
As part of an Android App I am building a button set. The buttons are part of a nested set of LinearLayouts. Using weight I have the set resizing itself automatically based on the size of the containing parent LinearLayout. The idea is, based on the pixel count and density of the screen, to set the ...
How to leave a message for a github.com user
...te with a github.com user i.e. write the user a message when only username/id is given on their GitHub page? Does GitHub have this social feature?
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The type initializer for 'MyClass' threw an exception
...right issue. For me, it tried to tell me The input is not a valid Base-64 string as it contains a non-base 64 character for what a function was returning to a DataTable object, but for me, there was actually an underlying issue where I was calling an app.config parameter by the wrong name, so a var...
Array slices in C#
...raySegment<T>. It's very light-weight as it doesn't copy the array:
string[] a = { "one", "two", "three", "four", "five" };
var segment = new ArraySegment<string>( a, 1, 2 );
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How to use cURL to get jSON data and decode the data?
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$url="https://.../api.php?action=getThreads&hash=123fajwersa&node_id=4&order_by=post_date&order=desc&limit=1&grab_content&content_limit=1";
Using cURL
// Initiate curl
$ch = curl_init();
// Will return the response, if false it print the response
curl_setopt($c...