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Why should I care that Java doesn't have reified generics?
...the candidate wished to see added to the Java language. It's commonly-identified as a pain that Java doesn't have reified generics but, when pushed, the candidate couldn't actually tell me the sort of things that he could have achieved were they there.
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In CSS what is the difference between “.” and “#” when declaring a set of styles?
What is the difference between # and . when declaring a set of styles for an element and what are the semantics that come into play when deciding which one to use?
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Read only the first line of a file?
...ed to use from __future__ import with_statement
In Python 3 you should specify the file encoding for the file you open. Read more...
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Prevent screen rotation on Android
...reenOrientation="landscape"
to the <activity> element/s in
the manifest and you're done.
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Get operating system info
... show which operating system someone is using.
What it does is that, it sniffs your core operating system model, for example windows nt 5.1 as my own.
It then passes windows nt 5.1/i to Windows XP as the operating system.
Using: '/windows nt 5.1/i' => 'Windows XP', from an array.
You could s...
What is the id( ) function used for?
... which is guaranteed to be unique and constant for this object during its lifetime." (Python Standard Library - Built-in Functions) A unique number. Nothing more, and nothing less. Think of it as a social-security number or employee id number for Python objects.
Is it the same with memory addres...
Can't execute jar- file: “no main manifest attribute”
...ond, to make a jar executable... you need to jar a file called META-INF/MANIFEST.MF
the file itself should have (at least) this one liner:
Main-Class: com.mypackage.MyClass
Where com.mypackage.MyClass is the class holding the public static void main(String[] args) entry point.
Note that there are s...
Correct format specifier to print pointer or address?
Which format specifier should I be using to print the address of a variable? I am confused between the below lot.
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Does order of where clauses matter in SQL?
...le index for this!
In the case of SQL Server, it will likely use an index if you have:
an index on (LastName, FirstName)
an index on (FirstName, LastName)
an index on just (LastName), or just (FirstName) (or both)
On the other hand - again for SQL Server - if you use SELECT * to grab all column...
The Android emulator is not starting, showing “invalid command-line parameter”
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If your SDK location path in Eclipse is in C:\Program Files (x86)\ change to C:\PROGRA~2\.
If you are running 32-bit Windows, C:\Program Files\, change the path to C:\PROGRA~1\.
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