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Programmatically retrieve memory usage on iPhone
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135
To get the actual bytes of memory that your application is using, you can do something like th...
Remove NA values from a vector
..., etc.)
Setting na.rm=TRUE does just what you're asking for:
d <- c(1, 100, NA, 10)
max(d, na.rm=TRUE)
If you do want to remove all of the NAs, use this idiom instead:
d <- d[!is.na(d)]
A final note: Other functions (e.g. table(), lm(), and sort()) have NA-related arguments that use d...
How can you hide database output in Rails console?
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178
A better way of doing this is by typing this into the console:
ActiveRecord::Base.logger.leve...
Using CSS how to change only the 2nd column of a table
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answered Mar 29 '10 at 0:04
Nick Craver♦Nick Craver
580k125125 gold badges12551255 silver badges11351135 bronze badges
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Generating a UUID in Postgres for Insert statement?
...t load it into your database to use it.
For modern PostgreSQL versions (9.1 and newer) that's easy:
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
but for 9.0 and below you must instead run the SQL script to load the extension. See the documentation for contrib modules in 8.4.
For Pg 9.1 and newe...
CSS: How to have position:absolute div inside a position:relative div not be cropped by an overflow:
...here is the full code with this change:
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<style type="text/css">
/* Positioning */
#box1 { overflow: hidden }
#box2 { position: absolute }
#box3 {...
jQuery - Add ID instead of Class
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edited Dec 9 '15 at 3:39
gsamaras
64.5k3131 gold badges140140 silver badges240240 bronze badges
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Java Round up Any Number
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291
Math.ceil() is the correct function to call. I'm guessing a is an int, which would make a / 100 ...