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What are the disadvantages to declaring Scala case classes?
...ically defined
Possible in any class by prefixing params with val
Decent toString() implementation
Yes, very useful, but doable by hand on any class if necessary
Compliant equals() and hashCode()
Combined with easy pattern-matching, this is the main reason that people use case classes
Companion obje...
Go naming conventions for const
...o the compiler.
// Only visible to the local file
const localFileConstant string = "Constant Value with limited scope"
// Exportable constant
const GlobalConstant string = "Everyone can use this"
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Python: Append item to list N times
...why the first method is only a good idea for constant values, like ints or strings, is because only a shallow copy is does when using the <list>*<number> syntax, and thus if you did something like [{}]*100, you'd end up with 100 references to the same dictionary - so changing one of them...
Preferred way of loading resources in Java
...rch three places as shown below. Comments welcome.
public URL getResource(String resource){
URL url ;
//Try with the Thread Context Loader.
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
if(classLoader != null){
url = classLoader.getResource(res...
How do you implement a private setter when using an interface?
...terface you can define only getter for your property
interface IFoo
{
string Name { get; }
}
However, in your class you can extend it to have a private setter -
class Foo : IFoo
{
public string Name
{
get;
private set;
}
}
...
How do I “git blame” a deleted line?
...w the contents of the line, this is an ideal use case for:
git log -S <string> path/to/file
which shows you commits which introduce or remove an instance of that string. There's also the -G<regex> which does the same thing with regular expressions! See man git-log and search for the -...
Custom attributes in styles.xml
... did eventually get what I was working on functioning. I eventually used a string for the declare-stylable instead of an enum. I'm not certain why enums weren't working, but this work-around was good enough for me.
– Paul Lammertsma
Dec 19 '11 at 15:21
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In Django, how does one filter a QuerySet with dynamic field lookups?
...
Just a quick gotcha heads-up: make sure the strings in the kwargs are of type str not unicode, else filter() will grumble.
– Steve Jalim
Apr 4 '11 at 9:30
...
How to identify whether a file is normal file or directory
...
os.path.isdir('string')
os.path.isfile('string')
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RAW POST using cURL in PHP
... I just realized that body goes here can include any valid json string.
– shasi kanth
Jul 31 '15 at 7:40
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