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What is a 'semantic predicate' in ANTLR?

...er: it parses an input string consisting of at least // one number, optionally followed by zero or more comma's and numbers parse : number (',' number)* EOF ; // matches a number that is between 1 and 3 digits long number : Digit Digit Digit | Digit Digit | Digit ; // matches a si...
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Can I change the size of UIActivityIndicator?

Whatever size i give to it while allocation, it shows fixed size only. Is it possible to increase it? 9 Answers ...
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Why is “Set as Startup” option stored in the suo file and not the sln file?

...e this setting should be stored in the solution file so it's shared across all users and part of source code control. Since we don't check in the suo file, each user has to set this separately which seems strange. ...
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Is it faster to count down than it is to count up?

... Is it really true? and if so does anyone know why? In ancient days, when computers were still chipped out of fused silica by hand, when 8-bit microcontrollers roamed the Earth, and when your teacher was young (or your teacher's tea...
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Android Preferences: How to load the default values when the user hasn't used the preferences-screen

...means this will only set the default values if this method has never been called in the past so you don't need to worry about overriding the user's settings each time your Activity is created Take a look into PreferenceManager.setDefaultValues in Android API for further investigation. ...
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How do I get the current absolute URL in Ruby on Rails?

...equest.url instead of request.request_uri. This combines the protocol (usually http://) with the host, and request_uri to give you the full address. share | improve this answer | ...
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href overrides ng-click in Angular.js

... am using AngularJS routing and need to maintain state in a service so for all of my internal application links I use $location, but removing href make it impossible for search engines to follow along the site. – Darrrrrren Nov 7 '14 at 13:34 ...
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How to use MySQLdb with Python and Django in OSX 10.6?

... I had the same error and pip install MySQL-python solved it for me. Alternate installs: If you don't have pip, easy_install MySQL-python should work. If your python is managed by a packaging system, you might have to use that system (e.g. sudo apt-get ins...
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Create a Date with a set timezone without using a string representation

... using .setUTCHours() it would be possible to actually set dates in UTC-time, which would allow you to use UTC-times throughout the system. You cannot set it using UTC in the constructor though, unless you specify a date-string. Using new Date(Date.UTC(year, month, day, ho...
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What is the difference between Strategy design pattern and State design pattern?

...ce to the context object that contains them. Strategies do not. States are allowed to replace themselves (IE: to change the state of the context object to something else), while Strategies are not. Strategies are passed to the context object as parameters, while States are created by the context obj...