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How to sum array of numbers in Ruby?
...e additional relevant reading:
http://ruby-doc.org/core-1.9.3/Enumerable.html#method-i-inject
http://en.wikipedia.org/wiki/MapReduce
http://en.wikipedia.org/wiki/Fold_(higher-order_function)
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Soft wrap at 80 characters in Vim in window of arbitrary width
...is to setup an autocmd to keep the columns at the new desired size for the filetypes you want.
– xer0x
Oct 26 '15 at 21:51
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How to write LaTeX in IPython Notebook?
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IPython notebook uses MathJax to render LaTeX inside html/markdown. Just put your LaTeX math inside $$.
$$c = \sqrt{a^2 + b^2}$$
Or you can display LaTeX / Math output from Python, as seen towards the end of the notebook tour:
from IPython.display import display, Math, L...
What is the size of an enum in C?
...nt C Standard (C99): http://www.open-std.org/JTC1/SC22/WG14/www/docs/n1256.pdf
6.7.2.2 Enumeration specifiers
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Constraints
The expression that defines the value of an enumeration constant shall be an integer
constant expression that has a value representable as an int.
[...]
Eac...
Limit File Search Scope in Sublime Text 2
...*.jpeg", "*.png", "*.gif", "*.ttf", "*.tga", "*.dds", "*.ico", "*.eot", "*.pdf", "*.swf", "*.jar", "*.zip"],
"folder_exclude_patterns": [".svn", ".git", ".hg", "CVS"],
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Fast and responsive interactive charts/graphs: SVG, Canvas, other?
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I also found when we print to PDF a page with SVG graphics, the resulting PDF still contains a vector-based image, while if you print a page with Canvas graphics, the image in the resulting PDF file is rasterized.
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Is there something like RStudio for Python? [closed]
... can install the free Anaconda distribution (http://continuum.io/downloads.html), which will install Spyder for you, as well as Python 2.7 and IPython. Spyder is very similar to RStudio.
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Postgresql: password authentication failed for user “postgres”
... From the Comprehensive manual, postgresql.org/files/documentation/pdf/12/postgresql-12-A4.pdf, section 20.5: "If no password has been set up for a user, the stored password is null and password authentication will always fail for that user.". Thus, since the installation doesn't ask for a p...
Git - Ignore files during merge
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but I found this git-scm.com/book/ch7-2.html#Merge-Strategies
– Nate-
Aug 16 '13 at 17:28
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How does UTF-8 “variable-width encoding” work?
...act, neither can 0xF5..0xFF. See the UTF-8 FAQ at unicode.org/faq/utf_bom.html, or unicode.org/versions/Unicode5.2.0/ch03.pdf
– Jonathan Leffler
Oct 21 '09 at 3:30
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