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How to convert JSON string to array
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If you pass the JSON in your post to json_decode, it will fail. Valid JSON strings have quoted keys:
json_decode('{foo:"bar"}'); // this fails
json_decode('{"foo":"bar"}', true); // returns array("foo" => "bar")
j...
Better way to check variable for null or empty string?
Since PHP is a dynamic language what's the best way of checking to see if a provided field is empty?
10 Answers
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Is there a way to make R beep/play a sound at the end of a script?
...mething else on a different desktop. If I don't check frequently, I never know when something is finished. Is there a way to invoke a beep (like a system beep) or get R to play a sound or notify growl via some code at the end of my script?
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How do I get a TextBox to only accept numeric input in WPF?
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Please let me know how to use it when declares in some other STATIC class and apply to textbox?
– SHEKHAR SHETE
Jun 28 '13 at 7:41
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How to add Web API to an existing ASP.NET MVC 4 Web Application project?
...t I need a controller deriving from ApiController, but that's about all I know.
9 Answers
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ImportError: No module named MySQLdb
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If you're having issues compiling the binary extension, or on a platform where you cant, you can try using the pure python PyMySQL bindings.
Simply pip install pymysql and switch your SQLAlchemy URI to start like this:
SQLA...
Get the first element of each tuple in a list in Python [duplicate]
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If you don't want to use list comprehension by some reasons, you can use map and operator.itemgetter:
>>> from operator import itemgetter
>>> rows = [(1, 2), (3, 4), (5, 6)]
>>> map(itemgetter(1), ...
java: HashMap not working
...mple
Map<String,Integer> m = new HashMap<String,Integer>();
Now both are objects, so this will work.
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How to deal with floating point number precision in JavaScript?
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That depends on what kind of
calculations you’re doing.
If you really need your results to add up exactly, especially when you
work with money: use a special decimal
datatype.
If you just don’t want to see all those extra decimal places: simply
format your result rounded...
Pretty printing JSON from Jackson 2.2's ObjectMapper
Right now I have an instance of org.fasterxml.jackson.databind.ObjectMapper and would like to get a String with pretty JSON. All of the results of my Google searches have come up with Jackson 1.x ways of doing this and I can't seem to find the proper, non-deprecated way of doing this with 2.2. E...