Category Archives: Articles in english

Ad Blocking Proxy = abloprox

as an act of digital hygiene, I installed abloprox on a raspi and added this PAC file to save some keystrokes when configuring: function FindProxyForURL(url, host) { if (shExpMatch(host,"*")) return "DIRECT"; if (shExpMatch(host,"*.local")) return "DIRECT"; if (shExpMatch(host,"*")) return "DIRECT"; if (shExpMatch(host,"*")) return "DIRECT"; // auto config: // 1. ensure there’s a host ‚wpad‘ in the current […]

Opening Xcode projects and workspaces

Inspired by ortas post about it I came up with this one-liner: alias openx=’open *.xcworkspace 2>/dev/null || open *.xcodeproj 2>/dev/null || echo "nagnagnag"’alias openx=’open *.xcworkspace 2>/dev/null || open *.xcodeproj 2>/dev/null || echo "nagnagnag"‘

Download WWDC2014 session pdf + mov

. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 #!/bin/sh cd "$(dirname "$0")"   PREFIX=wwdc2014 bwlimit="1000K"   for url in $(curl | egrep -hoe ‚[^"]+.pdf[^"]+’) do dst="$PREFIX/$(basename $url ?dl=1)" echo "$dst" curl –output "$dst" –time-cond "$dst" –remote-time –silent –create-dirs –location –limit-rate "$bwlimit" –url […]

install ruby @ OS X

OS X comes with a pretty hung ruby (1.8.7) until ‚Mavericks‘. ruby 1.8.7 had it’s planned EOL long ago, even debian/stable nowadays comes with a newer one. So if you’re still running Mountain Lion or older, you may need to install ruby. I chose rbenv and here’s how I did: RTFM install rbenv: $ brew […]

redmine (rails) + puma + lighttpd

Running redmine with a lightweight ruby on rails/webserver stack on a debian server – puma and lighttpd: Assumed you’ve got both redmine and lighttpd already installed: install puma gem: $ sudo gem install puma caution: ArgumentError on ruby 1.8.7 get tools/jungle/init.d/puma to /etc/init.d/ get tools/jungle/init.d/run-puma to /usr/local/bin/ add a puma app: $ sudo /etc/init.d/puma add /your/app/path www-data $ […]

Catch JavaScript exceptions in UIWebViews

A small but useful category method on UIWebView: Turn uncaught JavaScript Exception into a NSError! // // Created by Marcus Rohrmoser on 05.12.13. // Copyright (c) 2013 Marcus Rohrmoser mobile Software. All rights reserved. //   #import "UIWebView+JavaScriptNSError.h"   #define NSERROR_UIWEBVIEW_SCRIPT @"NSERROR_UIWEBVIEW_SCRIPT" #define NSERROR_UIWEBVIEW_SCRIPT_CODE 1   @implementation UIWebView(JavaScriptNSError)   -(NSString *)stringByEvaluatingJavaScriptFromString:(NSString *)script error:(NSError * __autoreleasing *)error […]

UIColor from hex string, once again

I end up doing this once per year – at least it’s getting leaner each time. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 […]

git version sha in iOS apps

there’s tons of recipes out there how to do this – nevertheless I want to add another one: create a new build phase (here named „Git Sha -> Info.plist“) paste 1 2 3 4 5 6 7 8 # write git version SHA into Info.plist # # inspired by # – # – […]

Rank sql(ite) text search results

When searching for text snippets in sql databases you might want to rank the results according to „how good did it match“. And: the ranking shouldn’t make the query slower. Let’s take a simple example using the LIKE operator. (I know, FTS does a better job, but let’s stick to like for now). Assume the […]

Ruby: Simple Fast Fourier Transform

by far not as powerful as the Fastest Fourier Transform in the West but maybe sometimes useful for a quick data analysis or de-noising. Reads stdin and writes to stdout. Algorithm taken from Meyberg, Vachenauer: Höhere Mathematik II and ported to plain ruby myself.