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Using a string variable as a variable name [duplicate]
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+1 because he answered the question (as bad an idea as it may be).
– mgalgs
Jun 25 '13 at 3:39
3
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Intellij code formatting, Java annotations on new lines
...s are correct but here is step by step for Mac users:
Click on "IntelliJ IDEA"
Click on "Preferences"
Go "Code Style" on the left navigation window and you will see "Java" listed below it and Click on it !
Look for the header tab "Wrapping and Braces" on the right side of Preferences window.
At th...
Run single test from a JUnit class using command-line
...ps:
Step 1: Compile the Test Class
% javac -cp .:"/Applications/IntelliJ IDEA 13 CE.app/Contents/lib/*" SetTest.java
Step 2: Run the Test
% java -cp .:"/Applications/IntelliJ IDEA 13 CE.app/Contents/lib/*" org.junit.runner.JUnitCore SetTest
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Pattern to avoid nested try catch blocks?
...ing a 3rd party library and has to do the best they can to ensure success. Ideally, the input could by validated first and the correct calculation function chosen to ensure it will not fail - of course, you could then put all that in a try/catch just to be safe ;)
– musefan
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Abusing the algebra of algebraic data types - why does this work?
... automatically and my less-than-subtle choice of names should give you the idea. The (&&&) operator is defined in Control.Arrow, by the way.
The dual of the above is the coproduct A+B with injections inl : A → A+B and inr : B → A+B, where given any type C and functions f : A → C, g...
Compare two objects and find the differences [duplicate]
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I like this idea, but the code here doesn't work. Here's a fiddle that shows a couple of fixes: dotnetfiddle.net/FhzcrS
– Don Rolling
Aug 23 '17 at 18:51
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How do cache lines work?
...e cache memory areas renders the CPU defect as a whole).
To give a timing idea (source: costs to access caches and memory)
L1 cache: 1ns to 2ns (2-4 cycles)
L2 cache: 3ns to 5ns (6-10 cycles)
L3 cache: 12ns to 20ns (24-40 cycles)
RAM: 60ns (120 cycles)
Since we mix different CPU types these ar...
If string is empty then return some default value
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Phrogz sort of gave me the idea in PofMagicfingers comment, but what about overriding | instead?
class String
def |(what)
self.strip.blank? ? what : self
end
end
@user.address | "We don't know user's address"
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Why does Java allow us to compile a class with a name different than the file name?
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@AndrewBarber, the analogy perfectly fits the idea of directory, in the long corridor you can quickly find a person by just glancing on the door plates, you do not need to enter each room and ask.
– exebook
Dec 2 '13 at 15:15
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PHP and MySQL - how to avoid password in source code? [duplicate]
...'s worse than having it in your source code.
It's also going to be a good idea to have a base (empty / default) version of the configuration file, and separate it out per environments, so that you could have a different configuration file for production, development, and testing platforms.
An envi...