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Truncate Two decimal places without rounding
Lets say I have a value of 3.4679 and want 3.46, how can I truncate to two decimal places that without rounding up?
21 Answ...
How to get the IP address of the docker host from inside a docker container
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324
/sbin/ip route|awk '/default/ { print $3 }'
As @MichaelNeale noticed, there is no sense to u...
Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...lowed by a single Newton-Raphson step) that gives nearly full precision (~23 bits of accuracy, if I remember properly), and is still somewhat faster than sqrtss.
edit: If speed is critical, and you're really calling this in a loop for many values, you should be using the vectorized versions of thes...
How to import a module given the full path?
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31 Answers
31
Active
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Rails - Could not find a JavaScript runtime?
I created a new Rails project using rails 3.1.0.rc4 on my local machine but when I try to start the server I get:
Could not find a JavaScript runtime. See here for a list of available runtimes. ( ExecJS::RuntimeUnavailable )
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Sleep in JavaScript - delay between actions
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You can use setTimeout to achieve a similar effect:
var a = 1 + 3;
var b;
setTimeout(function() {
b = a + 4;
}, (3 * 1000));
This doesn't really 'sleep' JavaScript—it just executes the function passed to setTimeout after a certain duration (specified in milliseconds). Although it ...
How to use my view helpers in my ActionMailer views?
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326
In the mailer class that you are using to manage your emails:
class ReportMailer < ActionM...
Oracle Differences between NVL and Coalesce
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316
COALESCE is more modern function that is a part of ANSI-92 standard.
NVL is Oracle specific, ...
How to add a search box with icon to the navbar in Bootstrap 3?
I am using the new Twitter Bootstrap 3, and am trying to place a search box like this (below) in the top navbar :
6 Answer...