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Why can Java Collections not directly store Primitives types?
...store an int in a List<Integer> the Java compiler will automatically convert it to an Integer.
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How do I remove repeated elements from ArrayList?
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Although converting the ArrayList to a HashSet effectively removes duplicates, if you need to preserve insertion order, I'd rather suggest you to use this variant
// list is some List of Strings
Set<String> s = new LinkedHashSe...
How to print a stack trace in Node.js?
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or just sys.puts(new Error().stack) (after adding the system module)
– sirhc
Aug 9 '10 at 4:48
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How to merge dictionaries of dictionaries?
... recursive function is easiest:
def merge(a, b, path=None):
"merges b into a"
if path is None: path = []
for key in b:
if key in a:
if isinstance(a[key], dict) and isinstance(b[key], dict):
merge(a[key], b[key], path + [str(key)])
elif a[k...
Passing arguments to C# generic new() of templated type
...structorParameters = parameters.Select((paramType, index) =>
// convert the object[index] to the right constructor parameter type.
Expression.Convert(
// read a value from the object[index]
Expression.ArrayAccess(
paramExpr,
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How to convert comma-separated String to List?
Is there any built-in method in Java which allows us to convert comma separated String to some container (e.g array, List or Vector)? Or do I need to write custom code for that?
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Difference between passing array and array pointer into function in C
...tialize an array, an expression that has type ‘‘array of type’’ is
converted to an expression with type ‘‘pointer to type’’ that points to the initial element of
the array object and is not an lvalue. If the array object has register storage class, the
behavior is undefined.
Given ...
What are the main purposes of using std::forward and which problems it solves?
In perfect forwarding, std::forward is used to convert the named rvalue references t1 and t2 to unnamed rvalue references. What is the purpose of doing that? How would that affect the called function inner if we leave t1 & t2 as lvalues?
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PHP - Extracting a property from an array of objects
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$idCats = array_column($cats, 'id');
But the son has to be an array or converted to an array
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ImportError: No module named Crypto.Cipher
... odd, but this fixed the issue on OS X Mavericks for me. I needed sudo for system wide libs.
– Paul
May 19 '14 at 9:09
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