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In absence of preprocessor macros, is there a way to define practical scheme specific flags at proje
...that macro relies on our debug preprocessor flag). I wanted to be able to call that same macro in the swift code...
I created a class method on one of my obj-c classes that is a wrapper around that macro.
I added that obj-c header to our bridge header file.
Now my swift code calls that class meth...
Does a const reference class member prolong the life of a temporary?
...onstructor exits. A temporary bound to a reference parameter in a function call (§5.2.2 [expr.call]) persists until the completion of the full expression containing the call.
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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...
What is the Objective-C equivalent for “toString()”, for use with NSLog?
...her description function is:
- (NSString*)debugDescription
This will be called when you do po anInstanceOfYourClass in the debug command window. If your class doesn't have a debugDescription function, then just description will be called.
Note that the base class NSObject does have description ...
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...
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
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Rails 3 check if attribute changed
...ry & other ary method). The result of the intersection is an array. By calling any? on the array, I get true if there is at least one intersection.
Also very useful, the changed_attributes method returns a hash of the attributes with their original values and the changes returns a hash of the a...
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...
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()...