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In C++, what is a “namespace alias”?
...he full namespace every time is cumbersome:
boost::numeric::ublas::vector<double> v;
Instead, you can define an alias for boost::numeric::ublas -- say we want to abbreviate this to just ublas:
namespace ublas = boost::numeric::ublas;
ublas::vector<double> v;
...
What's the (hidden) cost of Scala's lazy val?
...ks like the compiler arranges for a class-level bitmap int field to flag multiple lazy fields as initialized (or not) and initializes the target field in a synchronized block if the relevant xor of the bitmap indicates it is necessary.
Using:
class Something {
lazy val foo = getFoo
def getFoo ...
How can I convert the “arguments” object to an array in JavaScript?
...ave the useful functions from Array.prototype like forEach , sort , filter , and map .
21 Answers
...
Is there a way to iterate over a slice in reverse in Go?
...f the loop isn't the last thing in the function you may get unexpected results. Example.
– Daniel
Jul 15 '16 at 18:30
...
Clicking URLs opens default browser
...browser and open the link in the same WebView . But it's opening the default browser and loading the page there?
6 Answers...
what does -webkit-transform: translate3d(0,0,0); exactly do? Apply to body?
...wser, which lets the software do most (if not
all) of the rendering, resulting in less horsepower for transitions.
But the Web has been catching up, and most browser vendors now provide
graphical hardware acceleration by means of particular CSS rules.
Using -webkit-transform: translate3d(0,0...
Remove last character from string. Swift language
...difying)
Swift 3.0
The APIs have gotten a bit more swifty, and as a result the Foundation extension has changed a bit:
var name: String = "Dolphin"
var truncated = name.substring(to: name.index(before: name.endIndex))
print(name) // "Dolphin"
print(truncated) // "Dolphi"
Or the in-place v...
How to access parameters in a RESTful POST method
...new class since the data is passed using simple argument passing.
HTML <FORM>
The parameters would be annotated using @FormParam:
@POST
@Path("/create")
public void create(@FormParam("param1") String param1,
@FormParam("param2") String param2) {
...
}
The browser ...
Git cherry pick vs rebase
...
Since the time git cherry-pick learned to be able to apply multiple commits, the distinction indeed became somewhat moot, but this is something to be called convergent evolution ;-)
The true distinction lies in original intent to create both tools:
git rebase's task is to forward-po...
Change the name of the :id parameter in Routing resources for Rails
...quire you to add some code to your model though, like this:
class Client < ActiveRecord::Base
has_friendly_id :name
end
...and if your clients don't have URI compatible names, you might want to use a slug for that, which you can do with has_friendly_id :name, :use_slug => true. When using...