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Difference Between Invoke and DynamicInvoke
...ype, you can use Invoke, which is very fast - everything is already pre-validated. For example:
Func<int,int> twice = x => x * 2;
int i = 3;
int j = twice.Invoke(i);
// or just:
int j = twice(i);
However! If you just know that it is Delegate, it has to resolve the parameters etc manually...
What is string_view?
...d all kinds of "string reference" and "array reference" proposals is to avoid copying data which is already owned somewhere else and of which only a non-mutating view is required. The string_view in question is one such proposal; there were earlier ones called string_ref and array_ref, too.
The ide...
How to sort Counter by value? - python
...nstead of a straight sort:
>>> x.most_common(1)
[('c', 7)]
Outside of counters, sorting can always be adjusted based on a key function; .sort() and sorted() both take callable that lets you specify a value on which to sort the input sequence; sorted(x, key=x.get, reverse=True) would give...
Return number of rows affected by UPDATE statements
...ards is excellent for.
EXAMPLE
CREATE TABLE [dbo].[test_table](
[LockId] [int] IDENTITY(1,1) NOT NULL,
[StartTime] [datetime] NULL,
[EndTime] [datetime] NULL,
PRIMARY KEY CLUSTERED
(
[LockId] ASC
) ON [PRIMARY]
) ON [PRIMARY]
INSERT INTO test_table(StartTime, EndTime)
VALUES('200...
Remove refs/original/heads/master from git repo after filter-branch --tree-filter?
...up, in case you mess up your filter-branch. Believe me, it's a really good idea.
Once you've inspected the results, and you're very confident that you have what you want, you can remove the backed up ref:
git update-ref -d refs/original/refs/heads/master
or if you did this to many refs, and you ...
Use of ~ (tilde) in R programming Language
... English you'd say something like "Species depends on Sepal Length, Sepal Width, Petal Length and Petal Width".
The myFormula <- part of that line stores the formula in an object called myFormula so you can use it in other parts of your R code.
Other common uses of formula objects in R
The l...
How to apply an XSLT Stylesheet in C#
...0130329123237/http://www.csharpfriends.com/Articles/getArticle.aspx?articleID=63
From the article:
XPathDocument myXPathDoc = new XPathDocument(myXmlFile) ;
XslTransform myXslTrans = new XslTransform() ;
myXslTrans.Load(myStyleSheet);
XmlTextWriter myWriter = new XmlTextWriter("result.html",null) ...
CSS word-wrapping in div
I have a div with a width of 250px. When the innertext is wider than that i want it to break down. The div is float: left and now has an overflow. I want the scrollbar to go away by using word-wrapping. How can i achieve this?
...
How can I split and trim a string into parts all on one line?
...ToList();
FYI, the Foreach method takes an Action (takes T and returns void) for parameter, and your lambda return a string as string.Trim return a string
Foreach extension method is meant to modify the state of objects within the collection. As string are immutable, this would have no effect
Ho...
Deserialize from string instead TextReader
...
If you have the XML stored inside a string variable you could use a StringReader:
var xml = @"<car/>";
var serializer = new XmlSerializer(typeof(Car));
using (var reader = new StringReader(xml))
{
var car = (Car)serializer.Deserialize(reader);
...