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Mapping over values in a python dictionary

... There is no such function; the easiest way to do this is to use a dict comprehension: my_dictionary = {k: f(v) for k, v in my_dictionary.items()} In python 2.7, use the .iteritems() method instead of .items() to save memory. The...
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How to get POSTed JSON in Flask?

...JSON. I do the POST with the Postman Chrome extension, and the JSON I POST is simply {"text":"lalala"} . I try to read the JSON using the following method: ...
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CKEditor instance already exists

... AJAX). On some forms I am using a CKEditor for the textareas. The editor displays fine on the first load. 32 Answers ...
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When to use StringBuilder in Java [duplicate]

It is supposed to be generally preferable to use a StringBuilder for string concatenation in Java. Is this always the case? ...
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Is there any way to use a numeric type as an object key?

...ric type as a key name in an object, it always gets converted to a string. Is there anyway to actually get it to store as a numeric? The normal typecasting does not seem to work. ...
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Multiple constructors in python? [duplicate]

Is it not possible to define multiple constructors in Python, with different signatures? If not, what's the general way of getting around it? ...
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How to find if directory exists in Python

In the os module in Python, is there a way to find if a directory exists, something like: 13 Answers ...
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Get OS-level system information

...d up being run on many different platforms, but primarily variants of Solaris, Linux and Windows. 16 Answers ...
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Collection was modified; enumeration operation may not execute

I can't get to the bottom of this error, because when the debugger is attached, it does not seem to occur. 15 Answers ...
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How to do case insensitive string comparison?

How do I perform case insensitive string comparison in JavaScript? 22 Answers 22 ...