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Accessing last x characters of a string in Bash

I found out that with ${string:0:3} one can access the first 3 characters of a string. Is there a equivalently easy method to access the last three characters? ...
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How do CDI and EJB compare? interact?

... let me explain "Dependent" with example: class Specification { private String color; private String model; //- Getter and Setter } The Specification class is CDI, since it is not annotated with Ejb scopes and also this has to initialized by your code not EE framework. One point to be note...
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Get an object properties list in Objective-C

... const char *propType = getPropertyType(property); NSString *propertyName = [NSString stringWithCString:propName encoding:[NSString defaultCStringEncoding]]; NSString *propertyType = [NSString stringWit...
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LogCat message: The Google Play services resources were not found. Check your project configuration

...google.android.gms.common.GooglePlayServicesUtil.class. The aforementioned string appears only in one place: public static int isGooglePlayServicesAvailable(Context context) { PackageManager localPackageManager = context.getPackageManager(); try { Resources localResources = context....
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Recursive search and replace in text files on Mac and Linux

...takes the argument after -i as the extension for backups. Provide an empty string (-i '') for no backups. The following should do: LC_ALL=C find . -type f -name '*.txt' -exec sed -i '' s/this/that/ {} + The -type f is just good practice; sed will complain if you give it a directory or so. -exec i...
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Testing two JSON objects for equality ignoring child order in Java

...return false; } if (_children != null) { for (Map.Entry<String, JsonNode> en : _children.entrySet()) { String key = en.getKey(); JsonNode value = en.getValue(); JsonNode otherValue = other.get(key); if (otherValue == null || !ot...
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Upgrading PHP in XAMPP for Windows?

...ep 4 is not needed. After doing the rest I also copied the php.ini and php/extras from the backup folder. (It was also mentioned in the comments of the article, that helped me too) – Musa Haidari Aug 15 '14 at 8:21 ...
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Finding current executable's path without /proc/self/exe

...es a program is expected to create the same environment (argv, environment strings, etc.) for that program as if it were run from a shell, with some optional extras. A program or user can setup an environment that deviates from this convention for other subordinate programs that it launches but if i...
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How to “pretty” format JSON output in Ruby on Rails

...nController::Renderers.add :json do |json, options| unless json.kind_of?(String) json = json.as_json(options) if json.respond_to?(:as_json) json = JSON.pretty_generate(json, options) end if options[:callback].present? self.content_type ||= Mime::JS "#{options[:callback]}(#{jso...
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How can I concatenate regex literals in JavaScript?

...out using the regular expression literal syntax. This lets you do arbitary string manipulation before it becomes a regular expression object: var segment_part = "some bit of the regexp"; var pattern = new RegExp("some regex segment" + /*comment here */ segment_part + /* that was defin...