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Alternatives to gprof [closed]
...s still a bottleneck, but program counter sampling will not see it because now the hotspot is in string-compare. On the other hand if it were to sample the extended program counter (the call stack), the point at which the string-compare is called, the sort loop, is clearly displayed. In fact, gprof ...
Node.js Unit Testing [closed]
...
If I was starting a new project now I'd probably use Mocha as the test framework
– evilcelery
Nov 6 '12 at 16:30
1
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Sending email with PHP from an SMTP server
...ding@provider.com", "Testing", $message, $headers);
echo "Check your email now....<BR/>";
?>
or, for more details, read on.
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follo...
When can I use a forward declaration?
...he compiler's position: when you forward declare a type, all the compiler knows is that this type exists; it knows nothing about its size, members, or methods. This is why it's called an incomplete type. Therefore, you cannot use the type to declare a member, or a base class, since the compiler woul...
How to use a variable to specify column name in ggplot
...
From the release notes of ggplot2 V3.0.0 :
aes() now supports quasiquotation so that you can use !!, !!!, and
:=. This replaces aes_() and aes_string() which are now
soft-deprecated (but will remain around for a long time).
The idiomatic way now would be to convert ...
How to execute a Python script from the Django shell?
...nd
class Command(BaseCommand):
def handle(self, **options):
# now do the things that you want with your models here
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What is std::move(), and when should it be used?
...
template <class T>
swap(T& a, T& b) {
T tmp(a); // we now have two copies of a
a = b; // we now have two copies of b (+ discarded a copy of a)
b = tmp; // we now have two copies of tmp (+ discarded a copy of b)
}
using move allows you to swap the resources inste...
What does immutable mean?
...initial string?
Yes. Nothing can change the string once it is created. Now this doesn't mean that you can't assign a new string object to the str variable. You just can't change the current object that str references.
If the string was mutable, does that
mean the 2nd alert() would return ...
Difference between declaring variables before or in loop?
...: .067 sec
To my surprise B was slightly faster.
As fast as computers are now its hard to say if you could accurately measure this.
I would code it the A way as well but I would say it doesn't really matter.
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Detect changes in the DOM
...age event queue
var stack = [];
function callback() {
var now = +new Date();
if (now - last > delay) {
for (var i = 0; i < stack.length; i++) {
stack[i]();
}
last = now;
}
}
// Public interface
va...