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What are “Groovy” and “Grails” and what kinds of applications are built using them?
...Groovy on Grails") is a programming framework based on Groovy and inspired by Ruby on Rails (there are differences, but there are lots of similarities too). Like RoR, Grails promotes "coding by convention", development best practices, and is meant to be highly productive.
What kind of Applications a...
Smart pointers: who owns the object? [closed]
...ion for these, but they are also available in Boost.
I still pass objects by reference (const whenever possible), in this case the called method must assume the object is alive only during the time of call.
There's another kind of pointer that I use that I call hub_ptr. It's when you have an objec...
Value of i for (i == -i && i != 0) to return true in Java
...E is
10000000000000000000000000000000
Taking the negative value is done by first swapping 0 and 1, which gives
01111111111111111111111111111111
and by adding 1, which gives
10000000000000000000000000000000
As you can see in the link I gave, Wikipedia mentions the problem with the most negat...
Node.js Best Practice Exception Handling
... error condition?
if ( y === 0 ) {
// "throw" the error safely by returning it
return new Error("Can't divide by zero")
}
else {
// no error occured, continue on
return x/y
}
}
// Divide 4/2
var result = divideSync(4,2)
// did an error occur?
if ( res...
Resolving ambiguous overload on function pointer and std::function for a lambda using +
...urn types as the closure type's function call operator. The value returned by this conversion function shall be the address of a function that, when invoked, has the same effect as invoking the closure type’s function call operator.
Therefore, the unary + forces the conversion to the function po...
How to grep Git commit diffs or contents for a certain word?
...added or removed line matches "word" (also commit contents).
Note that -G by default accepts a regex, while -S accepts a string, but can be modified to accept regexes using the --pickaxe-regex.
To illustrate the difference between -S<regex> --pickaxe-regex and -G<regex>, consider a ...
Moving decimal places over in a double
...mal.
The problem you have is that 0.1 is not an exact representation, and by performing the calculation twice, you are compounding that error.
However, 100 can be represented accurately, so try:
double x = 1234;
x /= 100;
System.out.println(x);
which prints:
12.34
This works because Double.t...
Can someone give an example of cosine similarity, in a very simple, graphical way?
...ts are, purely in terms of word counts (and ignoring word order). We begin by making a list of the words from both texts:
me Julie loves Linda than more likes Jane
Now we count the number of times each of these words appears in each text:
me 2 2
Jane 0 1
Julie 1 1
Linda 1 0
l...
Disable Automatic Reference Counting for Some Files
...here, because some frameworks, such as JSONKit, cannot be converted to ARC by using the converter.
4 Answers
...
Difference between author and committer in Git?
...ommitter
In projects like the Linux kernel where patches are:
generated by git format-patch
sent by email, either by copy pasting, or more commonly with git send-email
applied by another person with either git apply or git am: How to use git am to apply patches from email messages?
generating a...