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Error-Handling in Swift-Language
... thing I noticed is that there are no exceptions.
So how do they do error handling in Swift? Has anyone found anything related to error-handling?
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How to get a pixel's x,y coordinate color from an image?
...ur PNG. The following creates an off-screen canvas that is the same width and height as your image and has the image drawn on it.
var img = document.getElementById('my-image');
var canvas = document.createElement('canvas');
canvas.width = img.width;
canvas.height = img.height;
canvas.getContext('2...
Declaring variables inside loops, good practice or bad practice?
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The compiler knows that the variable scope is limited to inside the loop, and therefore will issue a proper error message if the variable is by mistake referenced elsewhere.
Last but not least, some dedicated optimization can be performed more efficiently by the compiler (most importantly register ...
How to use timeit module
I understand the concept of what timeit does but I am not sure how to implement it in my code.
14 Answers
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Why should I use document based database instead of relational database?
...paper documents, e.g. by scanning office mail. The data is the scanned PDF and you have some meta data which always exists (scanned at, scanned by, type of document) and lots of possible metadata fields which exists sometime (customer number, supplier number, order number, keep on file until, OCRed ...
How to print a debug log?
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A lesser known trick is that mod_php maps stderr to the Apache log. And, there is a stream for that, so file_put_contents('php://stderr', print_r($foo, TRUE)) will nicely dump the value of $foo into the Apache error log.
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Can you supply arguments to the map(&:method) syntax in Ruby?
You're probably familiar with the following Ruby shorthand ( a is an array):
7 Answers
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how do I work around log4net keeping changing publickeytoken
...t your own code out by removing any direct references to log4net (new key) and replace with a reference to the assembly signed with the old key.
Sort out any dependant assemblies you may have by including this segment in your web/app.config
<runtime>
<assemblyBinding xmlns="urn...
Xcode 4 - detach the console/log window
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Go to Xcode preferences, and open the Behavior tab.
Tell Xcode to open a tab called "Debugger" when "Run Pauses" or "Run Starts". Then run it, and break that Debugging tab out into another window (drag it off the tab bar into its own window by just...
Why .NET String is immutable? [duplicate]
...ow, String is immutable. What are the reasons for String being immutable and the introduction of StringBuilder class as mutable?
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