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How to measure elapsed time in Python?
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If you just want to measure the elapsed wall-clock time between two points, you could use time.time():
import time
start = time.time()
print("hello")
end = time.time()
print(end - start)
This gives the execution time in seconds.
Another option since 3.3 might ...
What are the differences between “=” and “
... The operator <- can be used anywhere,
whereas the operator = is only allowed at the top level (e.g.,
in the complete expression typed at the command prompt) or as one
of the subexpressions in a braced list of expressions.
Let’s not put too fine a point on it: the R documentation is (su...
How to set a value to a file input in HTML?
...g/drop event on other elements. See How to set file input value programatically (i.e.: when drag-dropping files)?
– Samuel Liew♦
Nov 29 '17 at 22:01
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Static member functions error; How to properly write the signature?
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I'm guessing you've done something like:
class Foo
{
static void Bar();
};
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static void Foo::Bar()
{
...
}
The "static void Foo::Bar" is incorrect. You don't need the second "static".
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How to attribute a single commit to multiple developers?
The way all version control systems I'm familiar with work is that each commit is attributed to a single developer. The rise of Agile Engineering, and specifically pair programming, has lead to a situation where two developers have made a significant contribution to the same task, a bug fix for exam...
#if DEBUG vs. Conditional(“DEBUG”)
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It really depends on what you're going for:
#if DEBUG: The code in here won't even reach the IL on release.
[Conditional("DEBUG")]: This code will reach the IL, however calls to the method will be omitted unless DEBUG is set whe...
How to stop a goroutine
I have a goroutine that calls a method, and passes returned value on a channel:
6 Answers
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Rails 3 check if attribute changed
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Check out ActiveModel::Dirty (available on all models by default). The documentation is really good, but it lets you do things such as:
@user.street1_changed? # => true/false
share
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Why are empty strings returned in split() results?
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I was shocked to discover that curly quotes are actually valid in Python...but, but...how? The docs don't seem to mention this.
– Tim Pietzcker
Oct 8 '12 at 11:18
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How to retrieve POST query parameters?
... Express 3.0.
This was different starting Express 4.0 to 4.15:
$ npm install --save body-parser
and then:
var bodyParser = require('body-parser')
app.use( bodyParser.json() ); // to support JSON-encoded bodies
app.use(bodyParser.urlencoded({ // to support URL-encoded bodies
extended...