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What is more efficient? Using pow to square or just multiply it with itself?
...is test code confirms that behavior:
#include <iostream>
namespace foo
{
double bar(double x, int i)
{
std::cout << "foo::bar\n";
return x*i;
}
}
double bar(double x, double y)
{
std::cout << "::bar\n";
return x*y;
}
using namespace foo;
...
Spring Test & Security: How to mock authentication?
...edAuthority("ROLE_USER"),
new SimpleGrantedAuthority("PERM_FOO_READ")
));
User managerUser = new UserImpl("Manager User", "manager@company.com", "password");
UserActive managerActiveUser = new UserActive(managerUser, Arrays.asList(
new SimpleG...
How do I find the next commit in git? (child/children of ref)
...;n>th parent (i.e. rev^ is equivalent to rev^1).
If you are on branch foo and issue "git merge bar" then foo will be the first parent.
I.e: The first parent is the branch you were on when you merged, and the second is the commit on the branch that you merged in.
...
How to watch for array changes?
...;
x.splice(1, 2, "x");
console.log("setting index 2...");
x[2] = "foo";
console.log("setting length to 10...");
x.length = 10;
console.log("updated array: %o", x.slice());
console.log("setting length to 2...");
x.length = 2;
console.log("extracting first element via ...
Way to go from recursion to iteration
...rder of the calls, you have to add them in the reverse order to the stack:
foo(first);
foo(second);
has to be replaced by
stack.push(second);
stack.push(first);
Edit: The article Stacks and Recursion Elimination (or Article Backup link) goes into more details on this subject.
...
How to set custom location for local installation of npm package?
...o this by using the --prefix flag and the --global* flag.
pje@friendbear:~/foo $ npm install bower -g --prefix ./vendor/node_modules
bower@0.7.0 /Users/pje/foo/vendor/node_modules/bower
*Even though this is a "global" installation, installed bins won't be accessible through the command line unless ...
How can I download a specific Maven artifact in one command line?
...:
mvn dependency:get \
-DrepoUrl=http://.../ \
-Dartifact=com.foo.something:component:LATEST:jar \
-Dtransitive=false \
-Ddest=component.jar \
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Why avoid increment (“++”) and decrement (“--”) operators in JavaScript?
...ways use ++ and -- by themselves on a single line, as in:
i++;
array[i] = foo;
instead of
array[++i] = foo;
Anything beyond that can be confusing to some programmers and is just not worth it in my view. For loops are an exception, as the use of the increment operator is idiomatic and thus alw...
Prevent HTML5 video from being downloaded (right-click saved)?
...
People could record their entire screen and audio and fool all workarounds, that is why they can only be slowed down.
– kintsukuroi
Apr 28 at 6:11
1
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How to create a file with a given size in Linux?
...lease, modern is easier, and faster. On Linux, (pick one)
truncate -s 10G foo
fallocate -l 5G bar
It needs to be stated that truncate on a file system supporting sparse files will create a sparse file and fallocate will not. A sparse file is one where the allocation units that make up the file ar...