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How do you do natural logs (e.g. “ln()”) with numpy in Python?
...
I usually do like this:
from numpy import log as ln
Perhaps this can make you more comfortable.
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How to detect idle time in JavaScript elegantly?
...nction, 10000); // time is in milliseconds
}
}
idleLogout();
.
Apart from the improvements regarding activity detection, and the change from document to window, this script actually calls the function, rather than letting it sit idle by.
It doesn't catch zero CPU usage directly, but that is im...
How to split csv whose columns may contain ,
...parser = new TextFieldParser(new StringReader(csv));
// You can also read from a file
// TextFieldParser parser = new TextFieldParser("mycsvfile.csv");
parser.HasFieldsEnclosedInQuotes = true;
parser.SetDelimiters(",");
string[] fields;
while (!parser.EndOfData)
{
fields = parser.ReadFields(...
Using node.js as a simple web server
...w PhoneGap App. This is a generic mobile app that can load the HTML5 files from a server during development. This is a very slick trick since now you can skip the slow compile/deploy steps in your development cycle for hybrid mobile apps if you're changing JS/CSS/HTML files — which is what you're ...
How to do case insensitive string comparison?
..., then it's a little more complicated 'cause you need to generate a RegExp from the string but passing the string to RegExp constructor can result in incorrect matches or failed matches if the string has special regex characters in it.
If you care about internationalization don't use toLowerCase() ...
About catching ANY exception
...? Unless you re-raise the exception right away - see the following example from the docs:
try:
f = open('myfile.txt')
s = f.readline()
i = int(s.strip())
except IOError as (errno, strerror):
print "I/O error({0}): {1}".format(errno, strerror)
except ValueError:
print "Could not ...
Compare double to zero using epsilon
...ble can store exponents less than the exponent of epsilon.
You can't tell from this code alone whether it makes sense or not to use epsilon specifically as the bound, you need to look at the context. It may be that epsilon is a reasonable estimate of the error in the calculation that produced someV...
How do I create a nice-looking DMG for Mac OS X using command-line tools?
...s points for auto-copying to /Applications if the app detects it's running from ~/Downloads. See also this old article by John Gruber.
– Andrey Tarantsov
Apr 7 '16 at 14:52
1
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Does ruby have real multithreading?
...JVM Threads as OS Threads and some
as Green Threads. (The mainstream JVMs from Sun/Oracle use exclusively OS threads since JDK 1.3)
XRuby also implements Ruby Threads as JVM Threads. Update: XRuby is dead.
IronRuby implements Ruby Threads as Native Threads,
where "Native Threads" in case of the CL...
Automatic HTTPS connection/redirect with node.js/express
...rl);
// Or, if you don't want to automatically detect the domain name from the request header, you can hard code it:
// res.redirect('https://example.com' + req.url);
})
// have it listen on 8080
http.listen(8080);
The https express server listens ATM on 3000. I set up these iptables rul...