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Should I use a data.frame or a matrix?
...d to be of different types (numeric/character/logical etc.). Matrices are for data of the same type.
Consequently, the choice matrix/data.frame is only problematic if you have data of the same type.
The answer depends on what you are going to do with the data in data.frame/matrix. If it is going ...
How to split a string in Java
...cial meanings: the backslash \, the caret ^, the dollar sign $, the period or dot ., the vertical bar or pipe symbol |, the question mark ?, the asterisk or star *, the plus sign +, the opening parenthesis (, the closing parenthesis ), and the opening square bracket [, the opening curly brace {, The...
What is the difference between “Flush Magento Cache” and “Flush Cache Storage” in magento's cache ma
What is the difference between "Flush Magento Cache" and "Flush Cache Storage" in magento's cache management?
10 Answers
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How to configure 'git log' to show 'commit date'
How can I configure git log to show commit date instead of author date ?
3 Answers
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Enterprise Library Unity vs Other IoC Containers [closed]
...s and cons of using Enterprise Library Unity vs other IoC containers (Windsor, Spring.Net, Autofac ..)?
8 Answers
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What is an existential type?
...red that they're called existential types because of the existential operator (∃). I'm not sure what the point of it is, though. What's the difference between
...
What's to stop malicious code from spoofing the “Origin” header to exploit CORS?
...s to request data from bar.com, in the request it must specify the header Origin: http://foo.com , and bar must respond with Access-Control-Allow-Origin: http://foo.com .
...
Pimpl idiom vs Pure virtual class interface
I was wondering what would make a programmer to choose either Pimpl idiom or pure virtual class and inheritance.
10 Answers...
“is” operator behaves unexpectedly with integers
...und in the Python 2 documentation, "Plain Integer Objects" (It's the same for Python 3):
The current implementation keeps an
array of integer objects for all
integers between -5 and 256, when you
create an int in that range you
actually just get back a reference to
the existing object....
Differences between Perl and PHP [closed]
...
Perl and PHP are more different than alike. Let's consider Perl 5, since Perl 6 is still under development. Some differences, grouped roughly by subject:
Perl has native regular expression support, including regexp literals. PHP uses Perl's ...