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What is an Android PendingIntent?
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A PendingIntent is a token that you give to a foreign application (e.g. NotificationManager, AlarmManager, Home Screen AppWidgetManager, or other 3rd party applications), which allows the foreign application to use your application's permissions to...
serve current directory from command line
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Simplest way possible (thanks Aaron Patterson/n0kada):
ruby -run -e httpd . -p 9090
Alternate, more complex way:
ruby -r webrick -e "s = WEBrick::HTTPServer.new(:Port => 9090, :DocumentRoot => Dir.pwd); trap('INT') { s.shutdown }; s.start"
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List all environment variables from the command line
...erby
...and you will get the following:
DERBY_HOME=c:\Users\amro-a\Desktop\db-derby-10.10.1.1-bin\db-derby-10.10.1.1-bin
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Why is division in Ruby returning an integer instead of decimal value?
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It’s doing integer division. You can make one of the numbers a Float by adding .0:
9.0 / 5 #=> 1.8
9 / 5.0 #=> 1.8
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Most efficient method to groupby on an array of objects
...al libraries, you can concisely implement a vanilla version of groupBy() like so:
var groupBy = function(xs, key) {
return xs.reduce(function(rv, x) {
(rv[x[key]] = rv[x[key]] || []).push(x);
return rv;
}, {});
};
console.log(groupBy(['one', 'two', 'three'], 'length'));
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How do I turn a python datetime into a string, with readable format date?
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Python 3: strftime() Behavior
For this specific example, it would look something like:
my_datetime.strftime("%B %d, %Y")
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How do I measure execution time of a command on the Windows command line?
... and later are not supported) you can use The Windows Server 2003 Resource Kit, which contains timeit.exe that displays detailed execution stats. Here is an example, timing the command "timeit -?":
C:\>timeit timeit -?
Invalid switch -?
Usage: TIMEIT [-f filename] [-a] [-c] [-i] [-d] [-s] [-t] [...
Iterating over every two elements in a list
How do I make a for loop or a list comprehension so that every iteration gives me two elements?
21 Answers
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How can I list all collections in the MongoDB shell?
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Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
answered Jan 14 '12 at 22:57
AdaTheDevAdaTheD...
Convert a JSON string to object in Java ME?
...it's perfect for J2ME.
You can parse JSON into Java object in one line like this,
JSONObject json = (JSONObject)new JSONParser().parse("{\"name\":\"MyNode\", \"width\":200, \"height\":100}");
System.out.println("name=" + json.get("name"));
System.out.println("width=" + json.get("width"));
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