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What is a bus error?
What does the "bus error" message mean, and how does it differ from a segfault?
15 Answers
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What is the best method of handling currency/money?
...on.
If you insist on using integers, you will have to manually convert to and from BigDecimals everywhere, which will probably just become a pain.
As pointed out by mcl, to print the price, use:
number_to_currency(price, :unit => "€")
#=> €1,234.01
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Debug.Assert vs Exception Throwing
I've read plenty of articles (and a couple of other similar questions that were posted on StackOverflow) about how and when to use assertions, and I understood them well. But still, I don't understand what kind of motivation should drive me to use Debug.Assert instead of throwing a plain excep...
Does Java have buffer overflows?
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Since Java Strings are based on char arrays and Java automatically checks array bounds, buffer overflows are only possible in unusual scenarios:
If you call native code via JNI
In the JVM itself (usually written in C++)
The interpreter or JIT compiler does not work c...
Android : difference between invisible and gone?
What is the difference between invisible and gone for the View visibility status?
8 Answers
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Why is there no String.Empty in Java?
I understand that every time I type the string literal "" , the same String object is referenced in the string pool.
11 An...
When and how should I use a ThreadLocal variable?
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One possible (and common) use is when you have some object that is not thread-safe, but you want to avoid synchronizing access to that object (I'm looking at you, SimpleDateFormat). Instead, give each thread its own instance of the object...
Non-static variable cannot be referenced from a static context
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You must understand the difference between a class and an instance of that class. If you see a car on the street, you know immediately that it's a car even if you can't see which model or type. This is because you compare what you see with t...
QLabel: set color of text and background
How do I set color of text and background of a QLabel ?
6 Answers
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How do I manage conflicts with git submodules?
I have a git superproject that references several submodules and I am trying to lock down a workflow for the rest of the my project members to work within.
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