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What is duck typing?
I came across the term duck typing while reading random topics on software online and did not completely understand it.
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Maven build failed: “Unable to locate the Javac Compiler in: jre or jdk issue”
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You could try updating the JDK Eclipse is using, as follows:
Add and set the JRE in menu Window → Preferences... → Java → Installed JREs:
JRE type: Standard VM JRE
Name: jdk1.6.0_18
JRE home directory: C:\Program Files (x86)\Java\jdk1.6.0_18
If this is not the case, it's possible ...
What does “:=” do?
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It's the assignment operator in Pascal and is often used in proofs and pseudo-code. It's the same thing as = in C-dialect languages.
Historically, computer science papers used = for equality comparisons and ← for assignments. Pascal used := to stand in for the ...
What's the best practice for primary keys in tables?
...signing tables, I've developed a habit of having one column that is unique and that I make the primary key. This is achieved in three ways depending on requirements:
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What is the difference between List (of T) and Collection(of T)?
I've seen them used in a lot of the same ways, and I am worried I'm about to go down a path in design that is irreversible if I don't understand this better. Also, I am using .NET.
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How do I provide a username and password when running “git clone git@remote.git”?
I know how to provide a username and password to an HTTPS request like this:
10 Answers
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How can I deploy an iPhone application from Xcode to a real iPhone device?
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It sounds like the application isn't signed. Download ldid from Cydia and then use it like so: ldid -S /Applications/AccelerometerGraph.app/AccelerometerGraph
Also be sure that the binary is marked as executable: chmod +x /Applications/AccelerometerGraph.app/AccelerometerGraph
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Why aren't Java Collections remove methods generic?
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Josh Bloch and Bill Pugh refer to this issue in Java Puzzlers IV: The
Phantom Reference Menace, Attack of the Clone, and Revenge of The
Shift.
Josh Bloch says (6:41) that they attempted to generify the get method
of Map, remove meth...
Django - “no module named django.core.management”
I get the following error when trying to run Django from the command line.
21 Answers
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Difference between break and continue statement
Can anyone tell me the difference between break and continue statements?
21 Answers
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