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How to debug heap corruption errors?
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Application Verifier combined with Debugging Tools for Windows is an amazing setup. You can get both as a part of the Windows Driver Kit or the lighter Windows SDK. (Found out about Application Verifier when researching an earlier question abou...
Java : How to determine the correct charset encoding of a stream
...ave used this library, similar to jchardet for detecting encoding in Java:
http://code.google.com/p/juniversalchardet/
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How to show math equations in general github's markdown(not github's blog)
...will help you find them.
given the following markdown syntax
it will display the following image
equation http://www.sciweavers.org/tex2img.php?eq=1%2Bs...
Better way to cast object to int
... is probably trivial, but I can't think of a better way to do it. I have a COM object that returns a variant which becomes an object in C#. The only way I can get this into an int is
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What is the most efficient/elegant way to parse a flat table into a tree?
...e Pitfalls of Database Programming.
CREATE TABLE ClosureTable (
ancestor_id INT NOT NULL REFERENCES FlatTable(id),
descendant_id INT NOT NULL REFERENCES FlatTable(id),
PRIMARY KEY (ancestor_id, descendant_id)
);
Store all paths in the Closure Table, where there is a direct ancestry from o...
Rails I18n validation deprecation warning
... config.i18n.enforce_available_locales = true
# or if one of your gem compete for pre-loading, use
I18n.config.enforce_available_locales = true
# ...
end
end
Long answer
The deprecation warning is now displayed both in Rails 4 (>= 4.0.2) and Rails 3.2 (>= 3.2.14). The reaso...
How to implement Enums in Ruby?
... is very similar (and more with features) to Java, C++ enums.
Quoted from http://edgeapi.rubyonrails.org/classes/ActiveRecord/Enum.html :
class Conversation < ActiveRecord::Base
enum status: [ :active, :archived ]
end
# conversation.update! status: 0
conversation.active!
conversation.active?...
What is the difference between __init__ and __call__?
I want to know the difference between __init__ and __call__ methods.
13 Answers
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Why the switch statement cannot be applied on strings?
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C++ 11 update of apparently not @MarmouCorp above but http://www.codeguru.com/cpp/cpp/cpp_mfc/article.php/c4067/Switch-on-Strings-in-C.htm
Uses two maps to convert between the strings and the class enum (better than plain enum because its values are scoped inside it, and revers...
In Python, how do I determine if an object is iterable?
...'ve lately started to get more and more annoyed by objects which only have __getitem__ being considered iterable. There are valid reasons to have __getitem__ in a non-iterable object and with them the above code doesn't work well. As a real life example we can use Faker. The above code reports it be...