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Convert int to ASCII and back in Python
...123456789'
nchars = len(s)
# string to int or long. Type depends on nchars
x = sum(ord(s[byte])<<8*(nchars-byte-1) for byte in range(nchars))
# int or long to string
''.join(chr((x>>8*(nchars-byte-1))&0xFF) for byte in range(nchars))
Yields '0123456789' and x = 22758109892968359442...
How to minify php page html output?
...ring gzip depends on your version: Apache 1.3 uses mod_gzip while Apache 2.x uses mod_deflate.)
Accept-Encoding: gzip, deflate
Content-Encoding: gzip
Use the following snippet to remove white-spaces from the HTML with the help ob_start's buffer:
<?php
function sanitize_output($buffer) {
$...
Difference between “read commited” and “repeatable read”
...olation levels are so alike. Could someone please describe with some nice examples what the main difference is ?
8 Answers...
How to convert URL parameters to a JavaScript object?
...
Edit
This edit improves and explains the answer based on the comments.
var search = location.search.substring(1);
JSON.parse('{"' + decodeURI(search).replace(/"/g, '\\"').replace(/&/g, '","').replace(/=/g,'":"') + '"}')
Example
Parse abc=foo&...
Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
... tail -f /var/log/lastlog &
[1] 5636
$ ls -l /proc/5636/fd
total 0
lrwx------ 1 myuser myuser 64 Feb 27 07:36 0 -> /dev/pts/0
lrwx------ 1 myuser myuser 64 Feb 27 07:36 1 -> /dev/pts/0
lrwx------ 1 myuser myuser 64 Feb 27 07:36 2 -> /dev/pts/0
lr-x------ 1 myuser myuser 64 Feb 27 07:36...
How do I install cygwin components from the command line?
...
There is no tool specifically in the 'setup.exe' installer that offers the
functionality of apt-get. There is, however, a command-line package installer
for Cygwin that can be downloaded separately, but it is not entirely stable and
relies on workarounds.
apt-cyg: htt...
JSON left out Infinity and NaN; JSON status in ECMAScript?
...ther NaN or Infinity as literal values is ES -- you either have to use an expression (eg. 1/0, 0/0 etc) or a property lookup (referring to Infinity or NaN). As those require code execution they cannot be included in JSON.
– olliej
Sep 15 '09 at 3:30
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Difference between rake db:migrate db:reset and db:schema:load
...eletes the database
db:schema:load creates tables and columns within the (existing) database following schema.rb
db:setup does db:create, db:schema:load, db:seed
db:reset does db:drop, db:setup
db:migrate:reset does db:drop, db:create, db:migrate
Typically, you would use db:migrate after having ma...
No appenders could be found for logger(log4j)?
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Update multiple columns in SQL
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@Joe: no. See answer from Alex K below(stackoverflow.com/a/9079904/27535), there is a request to MS to add it
– gbn
Jan 31 '12 at 13:22
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