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Python JSON serialize a Decimal object
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Hmm, for me this converts Decimal objects to floats, which is not acceptable. Loss of precision when working with currency, for instance.
– Matthew Schinckel
Oct 22 '10 at 0:12
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Getting Http Status code number (200, 301, 404, etc.) from HttpWebRequest and HttpWebResponse
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Console.Write((int)response.StatusCode);
HttpStatusCode (the type of response.StatusCode) is an enumeration where the values of the members match the HTTP status codes, e.g.
public enum HttpStatusCode
{
...
Moved = 301,
OK = ...
Try-finally block prevents StackOverflowError
...y calls
foo() which fails to call foo()
To work each level into the finally block take twice as long an the stack depth could be
10,000 or more. If you can make 10,000,000 calls per second, this will take 10^3003 seconds or longer than the age of the universe.
...
Unique Key constraints for multiple columns in Entity Framework
... can now do this:
[Index("IX_FirstAndSecond", 1, IsUnique = true)]
public int FirstColumn { get; set; }
[Index("IX_FirstAndSecond", 2, IsUnique = true)]
public int SecondColumn { get; set; }
The second parameter in the attribute is where you can specify the order of the columns in the index.
Mor...
Is there a built-in method to compare collections?
...lowing expression checks if two dictionaries are equal regardless of their internal order:
dictionary1.OrderBy(kvp => kvp.Key).SequenceEqual(dictionary2.OrderBy(kvp => kvp.Key))
EDIT: As pointed out by Jeppe Stig Nielsen, some object have an IComparer<T> that is incompatible with th...
ObservableCollection Doesn't support AddRange method, so I get notified for each item added, besides
... index.
''' </summary>
Public Sub InsertRange(ByVal index As Integer, ByVal Collection As IEnumerable(Of T))
Dim ce As New NotifyCollectionChangingEventArgs(Of T)(NotifyCollectionChangedAction.Add, Collection)
OnCollectionChanging(ce)
If ce.Cancel Then Exit Sub
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Easy way to concatenate two byte arrays
...a billion times a second - sure, optimize it. Otherwise, readability and maintainability might be the winning considerations.
– vikingsteve
Dec 6 '13 at 15:35
5
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How to change shape color dynamically?
...ur own shapes in Java.
I did this for an iPhone like Page Controler and paint the shapes in Java:
/**
* Builds the active and inactive shapes / drawables for the page control
*/
private void makeShapes() {
activeDrawable = new ShapeDrawable();
inactiveDrawable = new ShapeDrawable();
...
Iteration over std::vector: unsigned vs signed index variable
... /* std::cout << value; ... */
Using indices
for(std::vector<int>::size_type i = 0; i != v.size(); i++) {
/* std::cout << v[i]; ... */
}
Using arrays
Using iterators
for(element_type* it = a; it != (a + (sizeof a / sizeof *a)); it++) {
/* std::cout << *it; ...
Overload constructor for Scala's Case Classes?
...rloading constructors isn't special for case classes:
case class Foo(bar: Int, baz: Int) {
def this(bar: Int) = this(bar, 0)
}
new Foo(1, 2)
new Foo(1)
However, you may like to also overload the apply method in the companion object, which is called when you omit new.
object Foo {
def apply(...