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Can virtual functions have default parameters?

If I declare a base class (or interface class) and specify a default value for one or more of its parameters, do the derived classes have to specify the same defaults and if not, which defaults will manifest in the derived classes? ...
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Canvas width and height in HTML5

...as { background:#fff; border:1px solid #ccc; width:400px; height:160px } <canvas width="100" height="40"></canvas> <p>Showing that re-drawing the same antialiased lines does not obliterate old antialiased lines.</p> ...
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pretty-print JSON using JavaScript

...efined, 2); } json = json.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>'); return json.replace(/("(\\u[a-zA-Z0-9]{4}|\\[^u]|[^\\"])*"(\s*:)?|\b(true|false|null)\b|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?)/g, function (match) { var cls = 'number';...
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Getting RAW Soap Data from a Web Reference Client running in ASP.net

...latform of the Service Server (Most likely LAMP). I believe there is a fault on their side of the fence as i have eliminated the potential issues with my client. The client is a standard ASMX type web reference proxy auto generated from the service WSDL. ...
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Meaning of numbers in “col-md-4”,“ col-xs-1”, “col-lg-2” in Bootstrap

...ire width), etc So, if you want two equal columns to span a div, write <div class="col-xs-6">Column 1</div> <div class="col-xs-6">Column 2</div> Or, if you want three unequal columns to span that same width, you could write: <div class="col-xs-2">Column 1</div&...
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Functional style of Java 8's Optional.ifPresent and if-not-Present?

...White is OK, first I did not like using Runnable but I could not find any alternatives, here another implementation I preferred more public class OptionalConsumer<T> { private Optional<T> optional; private OptionalConsumer(Optional<T> optional) { this.optional = o...
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Android Dialog: Removing title bar

... create new style in styles.xml <style name="myDialog" parent="android:style/Theme.Dialog"> <item name="android:windowNoTitle">true</item> </style> then add this to your manifest: <activity android:name=".youractivity" andro...
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Angular ng-repeat Error “Duplicates in a repeater are not allowed.”

I am defining a custom filter like so: 10 Answers 10 ...
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How to keep indent for second line in ordered lists via CSS?

...u can also avoid the wonky table stuff by using position: relative on the <li>and position: absolute on the generated content. See jsfiddle.net/maryisdead/kgr4k for an example. – maryisdead Apr 24 '14 at 8:54 ...
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How would I get a cron job to run every 30 minutes?

I'm looking to add a crontab entry to execute a script every 30 minutes, on the hour and 30 minutes past the hour or something close. I have the following, but it doesn't seem to run on 0. ...