DZone Snippets is a public source code repository. Easily build up your personal collection of code snippets, categorize them with tags / keywords, and share them with the world
Go to /home/virtual and run:
find -type l -maxdepth 1 -name '*.*' | xargs -n 1 basename | xargs -i find /home/virtual/{}/var/www -type f -size +8192k -ls
You can confirm that your database YAML file is being parsed properly with this one line shell command.
ruby -ryaml -e "File.open('config/database.yml') { |f| puts YAML.load(f).inspect }"
Use this objects:
java.util.Stack (LIFO) java.util.LinkedList (FIFO)
# put this in lib/active_record/json.rb
require 'json/lexer'
require 'json/objects'
module ActiveRecord
module Json # :nodoc:
DEFAULT_CONVERSIONS = { Time => [:to_s, :db] }
def to_json(conversions = {})
conversions = DEFAULT_CONVERSIONS.merge(conversions)
self.attributes.keys.inject({}) do |hsh, key|
value = self.send(key)
hsh.merge(key => conversions[value.class] ? value.send(*conversions[value.class]) : value.to_s)
end.to_json
end
end
end
# in environment.rb do
#require "#{RAILS_ROOT}/lib/active_record/json"
#ActiveRecord::Base.class_eval { include ActiveRecord::Json }
Doing something like
<%= var post = @post.to_json %>
in a javascript snippet should allow you to use the basic AR attributes such as post.title, post.summary (using the Weblog analogy). You could also pass the json bits to a javascript function.
//simple general rand function
float randBetween(float min, float max)
{
return llFrand(max - min) + min;
}
//uses randBetween to generate a random colour vector
//maybe a bit of overkill, but can be repurposed.
vector randColour()
{
vector r_colour = <randbetween 0,1), randBetween(0,1), randBetween(0,1)>;
return r_colour;
}
The R FAQ states:
par(mar = c(7, 4, 4, 2) + 0.1)
plot(1 : 30, xaxt = "n", xlab = "")
labels <- paste("Label", 1:30, sep = " ")
text(1:30, par("usr")[3] - 0.25, srt = 90, adj = 1,labels = labels, xpd = TRUE)
mtext(1, text = "X Axis Label", line = 6)
Also see Figure 1 and associated code in Paul Murrell (2003), “Integrating grid Graphics Output with Base Graphics Output�, R News, 3/2, 7–12.
At the prompt, type this:
defaults write com.apple.screencapture type image_format
Replace "image_format" with a file format name, like pdf, png, tiff, etc. Then to take screenshots, Cmd+Shift+4, then drag around the area you want to capture.
data <- sort.data.frame(data, key = "LOC")
where the function "sort.data.frame" is as follows:
sort.data.frame <- function(x, key, ...) {
if (missing(key)) {
rn <- rownames(x)
if (all(rn %in% 1:nrow(x))) rn <- as.numeric(rn)
x[order(rn, ...), , drop=FALSE]
} else {
x[do.call("order", c(x[key], ...)), , drop=FALSE]
}
}
The CSV file "loc.csv" contains the following:
Module LOC a.rb 100 b.rb 120 c.rb 54
The following R code creates the barplot image "loc.png":
data <- read.csv(file="loc.csv", sep = " ", header = TRUE, row.names = "Module")
png("loc.png", width = 640, height = 480)
barplot(data$LOC, names = rownames(data), ylim = c(0, 250), main = "Lines of code by module", ylab = "Lines of code", xlab = "Module")
dev.off()
This lets you load ActionView helpers globally.
RAILS_ROOT/lib/action_view/helpers/widget_helper.rb:
module ActionView
module Helpers
module WidgetHelper
# define helper methods
end
end
end
RAILS_ROOT/config/environment.rb:
require "#{RAILS_ROOT}/lib/action_view/helpers/widget_helper.rb"
ActionView::Base.class_eval do
include ActionView::Helpers::WidgetHelper
end
class AccountControllerTest < Test::Unit::TestCase
def setup
@controller = AccountController.new
@request = ActionController::TestRequest.new
@request.env['HTTPS'] = 'on'
@response = ActionController::TestResponse.new
end
def test_ssl
assert @request.ssl?
end
end
use Date::Manip qw(ParseDate UnixDate);
# Create an RFC822 compliant date (current time)
my $rfc822_format = "%a, %d %b %Y %H:%M %Z";
my $today = ParseDate("Now");
my $rfc822_date = UnixDate($today,$rfc822_format);
Pass new tags followed by a table name and database handle and this function updates the table so that each tag becomes properly associated/its record created, eg:
table state:
tagname | relatedtags
-----------------------
blog | rss;personal
rss | blog
personal | blog
call (table is named tags):
updateTags("blog personal friends","tags",$db);
table state:
tagname | relatedtags
-----------------------
blog | rss;personal;friends
rss | blog
personal | blog;friends
friends | blog;personal
function updateTags($tags,$table,$db) {//category handling stuff
include("recordExists.php");//see http://bigbold.com/snippets/posts/show/464
$cats = explode(";",$tags);//parse tags into array cats
foreach($cats as $cat) {//loop through cats
$tmp = array($cat);//dummy array with cat in it
$tmp = array_diff($cats,$tmp);//get everything in cats that is not cat
if(!recordExists("tagname",$cat,$table,$db)) {//if there is no category by this name yet
$tmp = implode(";",$tmp);//make tmp into semicolon-separated string
$result = mysql_query("INSERT INTO ".$table." (tagname,relatedtags) VALUES ('$cat','$tmp')", $db) or die(mysql_error());//insert category into database
} else {
$result = mysql_query("SELECT relatedtags FROM ".$table." WHERE tagname='$cat'", $db) or die(mysql_error());//select already related tags
$result = mysql_fetch_array($result);//get the result row as an array
$result = explode(";",$result['relatedtags']);//parse relatedtags into result
$result = array_merge($tmp,$result);//merge the cats in this $tags (without cat, hence tmp) with the ones that were in there already
$result = array_unique($result);//strip duplicates
$result = implode(";",$result);//make result into semicolon-separated string
$result = mysql_query("UPDATE ".$table." SET relatedtags='$result' WHERE tagname='$cat'", $db) or die(mysql_error());//update category
}//end if-else !recordExists
}//end foreach cats
}//end function updateTags
In mySQL (from PHP), checks for the existance of a record based on id, passing the name of the id field followed by the id to check for, the table name, and the database resource, in that order.
function recordExists($id,$idval,$table,$db) {//check for id=idval in table and return TRUE or FALSE
$result = mysql_query("SELECT * FROM ".$table." WHERE ".$id."='".$idval."'", $db) or die(mysql_error());
if($row = mysql_fetch_array($result)) {//if we did return a record
return 1;
}//end if row
return 0;
}//end fuction recordExists
<global-forwards> <forward name="error" path="/WEB-INF/jsp/error.jsp"/> </global-forwards>
