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How do I implement IEnumerable
...yObject> mylist = new List<MyObject>();
public MyObject this[int index]
{
get { return mylist[index]; }
set { mylist.Insert(index, value); }
}
public IEnumerator<MyObject> GetEnumerator()
{
return mylist.GetEnumerator();
}
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Evaluate expression given as a string
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You can use the parse() function to convert the characters into an expression. You need to specify that the input is text, because parse expects a file by default:
eval(parse(text="5+5"))
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data type not understood
...matrix = np.zeros((nrows, ncols))
Since the shape parameter has to be an int or sequence of ints
http://docs.scipy.org/doc/numpy/reference/generated/numpy.zeros.html
Otherwise you are passing ncols to np.zeros as the dtype.
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Using Regular Expressions to Extract a Value in Java
...()) {
// ...then you can use group() methods.
System.out.println(m.group(0)); // whole matched expression
System.out.println(m.group(1)); // first expression from round brackets (Testing)
System.out.println(m.group(2)); // second one (123)
System.out.println(m...
Java synchronized static methods: lock on object or class
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One point you have to be careful about (several programmers generally fall in that trap) is that there is no link between synchronized static methods and sync'ed non static methods, ie:
class A {
static synchronized f() {...}
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Finding all objects that have a given property inside a collection [duplicate]
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You could write a method that takes an instance of an interface which defines a check(Cat) method, where that method can be implemented with whatever property-checking you want.
Better yet, make it generic:
public interface Checker<T> {
public boolean check(T obj);
}...
How to display loading message when an iFrame is loading?
... string with anything that is url-compliant (special characters need to be converted to percent notation)
Example on fiddle
Pros:
No extra HTML-elements
No js
Text can easily (...) be adjusted without the need of an external program
It's SVG, so you can easily put any SVG you want in there.
C...
In C#, how to instantiate a passed generic type inside a method?
...me)
where T : IPerson, new()
Notice the additional constraint at the end. Then create a new instance in the method body:
T obj = new T();
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JavaScript equivalent of PHP's in_array()
...ide this backup for older browser for a long time, though. @harto: yes, it converts this.length to a Number that can be represented as a 32-bit unsigned integer. A native Array can only have a length that already complies with this, but the spec states that you can call Array.prototype methods on na...
How can I parse a JSON file with PHP? [duplicate]
... I should add that you seem to have removed the key in the OP's json while converting to array. So the OP is right.
– Stephen Adelakun
Aug 23 '16 at 8:51
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