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What exactly does Perl's “bless” do?
...riented Perl: A Comprehensive Guide to Concepts and Programming Techniques by Damian Conway for useful examples) or even a reference to a file or directory handle (least common case).
The effect bless-ing has is that it allows you to apply special syntax to the blessed reference.
For example, if ...
String.replaceAll single backslashes with double backslashes
...ecessarily need regex for this, simply because you want an exact character-by-character replacement and you don't need patterns here. So String#replace() should suffice:
string.replace("\\", "\\\\");
Update: as per the comments, you appear to want to use the string in JavaScript context. You'd ...
Rotating a point about another point (2D)
... operation (i.e. calculating the inverse angle and then rotating clockwise by that amount)? I've seen a ton of pages giving this same formula, but nobody ever seems to see fit to talk about directionality in relation to the input / output values...
– NetXpert
A...
How to use base class's constructors and assignment operator in C++?
... 'D' contains no new member variables then the default versions (generated by the compiler should work just fine). The default Copy constructor will call the parent copy constructor and the default assignment operator will call the parent assignment operator.
But if your class 'D' contains resource...
NodeJS require a global module/package
...t look in the folder where global modules are installed.
You can fix this by setting the NODE_PATH environment variable. In Linux this will be:
export NODE_PATH=/usr/lib/node_modules
Note: This depend on where your global modules are actually installed.
See: Loading from the global folders.
...
What does the constant 0.0039215689 represent?
...bly safe to guess that this was done for performance reasons.
Multiplying by the reciprocal is faster than repeatedly dividing by 255.
Side Note:
If you're wondering why such a micro-optimization isn't left to the compiler, it's because it is an unsafe floating-point optimization. In other word...
Getting MAC Address
...2X" % mac)[i:i+2] for i in range(0, 12, 2)) for an uppercase MAC with each byte separated by a colon.
– tomlogic
Nov 10 '14 at 17:21
5
...
Edit and Continue: “Changes are not allowed when…”
...ling" he Gallio plugin. Only the uninstall solved the problem.
PS. Edited by nightcoder:
In my case disabling TypeMock Isolator (mocking framework) finally helped! Edit & Continue now works!!!
Here is the answer from TypeMock support:
After looking further into the edit
and continue issu...
What is the difference between Class Path and Build Path
...ally a sequence of JAR file names and directory names. The classpath used by the compiler and the runtime system don't have to be the same, but they typically should be, especially for a small project.
Buildpath is not standard Java terminology. It is the term for the richer way that a typical ID...
What is the difference between named and positional parameters in Dart?
... not specify a value.
Positional optional parameters
A parameter wrapped by [ ] is a positional optional parameter. Here is an example:
getHttpUrl(String server, String path, [int port=80]) {
// ...
}
In the above code, port is optional and has a default value of 80.
You can call getHttpUr...