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Use of ~ (tilde) in R programming Language
...h".
The myFormula <- part of that line stores the formula in an object called myFormula so you can use it in other parts of your R code.
Other common uses of formula objects in R
The lattice package uses them to specify the variables to plot.
The ggplot2 package uses them to specify panels f...
Differences between Java 8 Date Time API (java.time) and Joda-Time
...ys perfect ;-)).
c) With both libraries we get a real calendar date type (called LocalDate), a real wall time type (called LocalTime) and the composition (called LocalDateTime). That is a very big win compared with old java.util.Calendar and java.util.Date.
d) Both libraries use a method-centric a...
Which is the best library for XML parsing in java [closed]
...olely to read a XML document. The Sax parser runs through the document and calls callback methods of the user. There are methods for start/end of a document, element and so on. They're defined in org.xml.sax.ContentHandler and there's an empty helper class DefaultHandler.
public static void parse()...
Including JavaScript class definition from another file in Node.js
I'm writing a simple server for Node.js and I'm using my own class called User which looks like:
7 Answers
...
Why use Ruby's attr_accessor, attr_reader and attr_writer?
... write classes which will work correctly no matter how their public API is called.
class Person
attr_accessor :age
...
end
Here, I can see that I may both read and write the age.
class Person
attr_reader :age
...
end
Here, I can see that I may only read the age. Imagine that it is set...
How can I expand the full path of the current file to pass to a command in Vim?
... echo l:vimrcfilename . " empty or not found."
endif
endfunction
call Source_dotvim("vimrc.local.01-env.vimrc")
Notes:
:help fnamemodify
"current file": %:p (buffer file) / <sfile>:p (script file)
expand('<sfile>') does not work from within a function
source l:varname does ...
JQuery to load Javascript file dynamically
...
Yes, use getScript instead of document.write - it will even allow for a callback once the file loads.
You might want to check if TinyMCE is defined, though, before including it (for subsequent calls to 'Add Comment') so the code might look something like this:
$('#add_comment').click(function()...
Gson custom seralizer for one variable (of many) in an object using TypeAdapter
...hooks to modify the outgoing data. This example uses a new API in Gson 2.2 called getDelegateAdapter() that allows you to look up the adapter that Gson would use by default. The delegate adapters are extremely handy if you just want to tweak the standard behavior. And unlike full custom type adapter...
PEP 8, why no spaces around '=' in keyword argument or a default parameter value?
...erence is already clear from context. The former happens within a function call, and the latter needs to stand alone at the current indentation level. IMO, for variable names longer than 5-6 characters (i.e. real life for most), the variant with spaces is hands-down more readable.
...
Why does “,,,” == Array(4) in Javascript?
...d if you follow the ToPrimitive method you will eventually find that it it calls toString.
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