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How does Google's Page Speed lossless image compression work?
...lly interested in the technical details, check out the source code:
png_optimizer.cc
jpeg_optimizer.cc
webp_optimizer.cc
For PNG files, they use OptiPNG with some trial-and-error approach
// we use these four combinations because different images seem to benefit from
// different parameters...
Get keys from HashMap in Java
...
private Map<String, Integer> _map= new HashMap<String, Integer>();
Iterator<Map.Entry<String,Integer>> itr= _map.entrySet().iterator();
//please check
while(itr.hasNext())
{
...
PHP and MySQL - how to avoid password in source code? [duplicate]
...e the below code:
// Check if it's been set by the web server
if (!empty($_ENV['ENVIRONMENT'])) {
// Copy from web server to PHP constant
define('ENVIRONMENT', $_ENV['ENVIRONMENT']);
}
if (!defined('ENVIRONMENT')) {
// Default to development
define('ENVIRONMENT', 'development');
}
...
How do you run NUnit tests from Jenkins?
... $sourceDirectory = $env:WORKSPACE
, $fileFilters = @("*.UnitTests.dll", "*_UnitTests.dll", "*UnitTests.dll")
, [string]$filterText = "*\bin\Debug*"
)
#script that executes all unit tests available.
$nUnitLog = Join-Path $sourceDirectory "UnitTestResults.txt"
$nUnitErrorLog = Join-Path $sourceDirec...
Git: “Not currently on any branch.” Is there an easy way to get back on a branch, while keeping the
... hash of last commit. Checkout the branch you wish to be at, and git merge _hash_
– Daniel
May 31 '12 at 13:31
BE REAL...
Bash set +x without it being printed
...ution to this just recently when I became annoyed with it:
shopt -s expand_aliases
_xtrace() {
case $1 in
on) set -x ;;
off) set +x ;;
esac
}
alias xtrace='{ _xtrace $(cat); } 2>/dev/null <<<'
This allows you to enable and disable xtrace as in the following, wh...
Ignoring an already checked-in directory's contents?
...call a powershell script doing this:
dir *.CheckedIn -Recurse | %{ copy $_.FullName "$($_.FullName)".Replace("CheckedIn","") -EA SilentlyContinue}
I do feel a little bad about myself... but it does in fact work.
share
...
Detect if stdin is a terminal or pipe?
... is a file or a pipe\n");
(On windows they're prefixed with underscores: _isatty, _fileno)
share
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iOS 5 Best Practice (Release/retain?)
...time compatibility glue code to your app. This works for everything except __weak variables, which require more support than the compatibility code can provide. ARC on iOS 4 is simpler than non-ARC code, but it's not as simple as ARC on iOS 5." By the way, the WWDC schedule app was written with AR...
Why would I use Scala/Lift over Java/Spring? [closed]
... of a REST request:
serve {
case "api" :: "user" :: AsUser(user) :: _ XmlGet _ => <b>{user.name}</b>
case "api" :: "user" :: AsUser(user) :: _ JsonGet _ => JStr(user.name)
}
Using Scala's built-in pattern matching, we match an incoming request, extract the third part...