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Macro vs Function in C
...* a
works fine when used with an integer:
square(5) --> 5 * 5 --> 25
but does very strange things when used with expressions:
square(1 + 2) --> 1 + 2 * 1 + 2 --> 1 + 2 + 2 --> 5
square(x++) --> x++ * x++ --> increments x twice
Putting parentheses around arguments helps b...
When should the volatile keyword be used in C#?
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276
I don't think there's a better person to answer this than Eric Lippert (emphasis in the origin...
How to show SQL queries run in the Rails console?
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254
Rails 3+
Enter this line in the console:
ActiveRecord::Base.logger = Logger.new(STDOUT)
Ra...
What's the opposite of chr() in Ruby?
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If String#ord didn't exist in 1.9, it does in 2.0:
"A".ord #=> 65
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How to group time by hour or by 10 minutes
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219
finally done with
GROUP BY
DATEPART(YEAR, DT.[Date]),
DATEPART(MONTH, DT.[Date]),
DATEPART(DA...
How do I list all files of a directory?
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21 Answers
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Favorite (Clever) Defensive Programming Best Practices [closed]
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A Java collection of value pairs? (tuples?)
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255
The Pair class is one of those "gimme" generics examples that is easy enough to write on your ...
Defining a percentage width for a LinearLayout? [duplicate]
...ton>
<Button
android:text="Button2"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
</Button>
<Button
android:text="Button3"
...