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What is a NullPointerException, and how do I fix it?
... the object you get a NullPointerException. In the most trivial cases, the compiler will catch the problem and let you know that "num may not have been initialized," but sometimes you may write code that does not directly create the object.
For instance, you may have a method as follows:
public void...
What are the real-world strengths and weaknesses of the many frameworks based on backbone.js? [close
...oducing Marionette as a composite application architecture for Backbone:
http://lostechies.com/derickbailey/2011/11/17/introduction-to-composite-javascript-apps/
http://lostechies.com/derickbailey/2011/12/12/composite-js-apps-regions-and-region-managers/
Message Queues / Patterns
The same large...
Which characters need to be escaped when using Bash?
Is there any comprehensive list of characters that need to be escaped in Bash? Can it be checked just with sed ?
7 Answers...
Find where python is installed (if it isn't default dir)
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@Ned check out stackoverflow.com/questions/304319/…
– Foo Bah
Jul 21 '11 at 4:06
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Rails formatting date
...hich provides you a way to present the string representation of the date. (http://ruby-doc.org/core-2.2.1/Time.html#method-i-strftime).
From APIdock:
%Y%m%d => 20071119 Calendar date (basic)
%F => 2007-11-19 Calendar date (extended)
%Y...
How can I read a function's signature including default argument values?
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@darth_coder: In Python2, getargspec raises TypeError if the input is not recognized as a Python function -- that is, a function implemented in Python. In CPython, Exception.__init__ is implemented in C, hence the TypeError. You'll...
Python nested functions variable scoping [duplicate]
...When I run your code I get this error:
UnboundLocalError: local variable '_total' referenced before assignment
This problem is caused by this line:
_total += PRICE_RANGES[key][0]
The documentation about Scopes and Namespaces says this:
A special quirk of Python is that – if no global st...
MySQL Orderby a number, Nulls last
...ues last but otherwise the same as position ASC.
A good reference is here http://troels.arvin.dk/db/rdbms#select-order_by
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What does a type followed by _t (underscore-t) represent?
... with the Stack Overflow search or Google. What does a type followed by a _t mean? Such as
10 Answers
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How much is the overhead of smart pointers compared to normal pointers in C++?
How much is the overhead of smart pointers compared to normal pointers in C++11? In other words, is my code going to be slower if I use smart pointers, and if so, how much slower?
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