Trick on Arcanelab Blog

DIY: Noticeably Improve Your Macro Photography with a Cheap Plastic Cup

Fri, 04 Sep 2015 00:30:00 +0200

Zoom to Fit button on Preview Toolbar When reading documents with Mac OS X’s Preview,…

Tue, 29 May 2012 08:50:00 +0200

Zoom to Fit button on Preview Toolbar

When reading documents with Mac OS X’s Preview, one of my first move is to set the zooming to fit the window width, however, Preview doesn’t have neither a shortcut nor a button on its toolbar for this function. Let’s make one!

If you right click on the toolbar, there is an option to customize it. However, there is no icon/button available for the Zoom to Fit function, only for Zoom In/Out, and Actual Size. How come that one of the most useful feature is not available here? The key is to create a keyboard shortcut for it and then the icon for it will “magically” appear in the customize menu.

C/C++ trick with logical operators Let me show a nice C/C++ trick I just found out:…

Sat, 04 Sep 2010 02:14:00 +0200

C/C++ trick with logical operators

Let me show a nice C/C++ trick I just found out:

Instead of writing:

if (function1())
 function2();

you could write:

function1() && function2();

because the right side of the && operator is only evaluated (in this case: called), when function1() is true (returns a non-null value).

Subsequently, instead of:

if (!function1()) // or if (function1()==0) etc.
 function2();

you could write:

function1() || function2();

Cool, eh?