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When should I use Lazy?
...e cost.
Usually this is preferable when the object may or may not be used and the cost of constructing it is non-trivial.
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How to get users to read error messages?
...ind yourself at a high risk that users will not read your carefully worded and enlightening error messages, but just click on the first button available with a shrug of frustration.
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How to create the perfect OOP application [closed]
...tly I was trying for a company ‘x’. They sent me some set of questions and told me to solve only one.
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How to generate a random string in Ruby
I'm currently generating an 8-character pseudo-random uppercase string for "A" .. "Z":
50 Answers
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Why is using the JavaScript eval function a bad idea?
The eval function is a powerful and easy way to dynamically generate code, so what are the caveats?
26 Answers
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How do I implement a callback in PHP?
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The manual uses the terms "callback" and "callable" interchangeably, however, "callback" traditionally refers to a string or array value that acts like a function pointer, referencing a function or class method for future invocation. This has allowed some elemen...
Bash, no-arguments warning, and case decisions
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I interpreted "and" as "otherwise", assuming that the message would be some help text. But I'm sure Werner is able to figure out what that line does and whether he wants it :)
– Thomas
Mar 11 '10 at 19...
DirectX SDK (June 2010) Installation Problems: Error Code S1023
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I had the same problem and for me it was because the vc2010 redist x86 was too recent.
Check your temp folder (C:\Users\\AppData\Local\Temp) for the most recent file named
Microsoft Visual C++ 2010 x64 Redistributable Setup_20110608_xxx.html ##...
Remove elements from collection while iterating
...201-63361-3")));
books.add(new Book(new ISBN("0-201-63361-4")));
Collect and Remove
The first technique consists in collecting all the objects that we want to delete (e.g. using an enhanced for loop) and after we finish iterating, we remove all found objects.
ISBN isbn = new ISBN("0-201-63361-2"...
How to check the differences between local and github before the pull [duplicate]
... using pull, I want to check if there are any differences between my local and github master.
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