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Install Node.js on Ubuntu
...mon
As of Node.js v0.10.0, the nodejs package from Chris Lea's repo
includes both npm and nodejs-dev.
Don't give sudo apt-get install nodejs npm just sudo apt-get install nodejs
share
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imp...
Writing to an Excel spreadsheet
..., but I have not used it.
To format cells with xlwt, define a XFStyle and include the style when you write to a sheet. Here is an example with many number formats. See example code below.
Tablib (powerful, intuitive): Tablib is a more powerful yet intuitive library for working with tabular data. It...
How to check if a variable is null or empty string or all whitespace in JavaScript?
...
Whitespace can also include tabs, other kinds of spaces, etc. Use /^\s*$/ to catch those, too.
– grant
Aug 9 '13 at 0:26
2
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How to Validate a DateTime in C#?
...@D.Galvez Excuse my late coming to the party, but is it a best practice to include the brackets even if there is only 1 statement? This might just be a situation where personal preference is most important -- and in that case I find including them to be quite nice simply for readability and consiste...
Rails Observer Alternatives for 4.0
...a module there:
module MyConcernModule
extend ActiveSupport::Concern
included do
after_save :do_something
end
def do_something
...
end
end
Next, include that in the models you wish to run the after_save in:
class MyModel < ActiveRecord::Base
include MyConcernModule
end
...
How to read the content of a file to a string in C?
...OS-dependent, solution is memory mapping the file. The benefits generally include performance of the read, and reduced memory use as the applications view and operating systems file cache can actually share the physical memory.
POSIX code would look like this:
int fd = open("filename", O_RDONLY);...
How do I install the yaml package for Python?
...n PyPI with yaml in the short description. That reveals various packages, including PyYaml, yamltools, and PySyck, among others (Note that PySyck docs recommend using PyYaml, since syck is out of date). Now you know a specific package name, you can install it:
$ pip install pyyaml
If you want t...
HTML table with 100% width, with vertical scroll inside tbody [duplicate]
...two above methods on Windows 7 via the new versions of major Web Browsers (including IE10+) and it worked.
However, it doesn't work properly on IE9 and below.
That's because in a table layout, all elements should follow the same structural properties.
By using display: block; for the <thead>...
How many spaces will Java String.trim() remove?
... Based on the Javadoc it removes leading and trailing whitespace, which includes space, tab, newline carriage return, form feed, ... and which excludes characters that aren't leading or trailing.
– Marquis of Lorne
Nov 29 '14 at 8:49
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