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Reflecting parameter name: abuse of C# lambda expressions or syntax brilliance?
...ple
C#:
public class Class1
{
public static void Foo(Func<object, string> f)
{
Console.WriteLine(f.Method.GetParameters()[0].Name);
}
}
F#:
Class1.Foo(fun yadda -> "hello")
Result:
"arg" is printed (not "yadda").
As a result, library designers should either avoi...
JSON.stringify without quotes on properties?
...most cases:
const object = { name: 'John Smith' };
const json = JSON.stringify(object); // {"name":"John Smith"}
console.log(json);
const unquoted = json.replace(/"([^"]+)":/g, '$1:');
console.log(unquoted); // {name:"John Smith"}
Extreme case:
var json = '{ "name": "J\\":ohn Smit...
Django Passing Custom Form Parameters to Formset
...ory(wraps(ServiceForm)(partial(ServiceForm, affiliate=request.affiliate)), extra=3)
I think this is the cleanest approach, and doesn't affect ServiceForm in any way (i.e. by making it difficult to subclass).
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What does the restrict keyword mean in C++?
... saved, as mentioned by supercat and michael.
Consider for example:
void f(char *restrict p1, char *restrict p2, size_t size) {
for (size_t i = 0; i < size; i++) {
p1[i] = 4;
p2[i] = 9;
}
}
Because of restrict, a smart compiler (or human), could optimize that to:
mem...
Using Java to find substring of a bigger string using Regular Expression
If I have a string like this:
12 Answers
12
...
Convert XML to JSON (and back) using Javascript
...onvert JSON to XML DOM Object
X2JS.xml_str2json - Convert XML specified as string to JSON
X2JS.json2xml_str - Convert JSON to XML string
Online Demo on http://jsfiddle.net/abdmob/gkxucxrj/1/
var x2js = new X2JS();
function convertXml2JSon() {
$("#jsonArea").val(JSON.stringify(x2js.xml_str2json...
Why is it impossible to build a compiler that can determine if a C++ function will change the value
...int& val) {
cout << "Should I change value? [Y/N] >";
string reply;
cin >> reply;
if (reply == "Y") {
val = 42;
}
}
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How to HTML encode/escape a string? Is there a built-in?
I have an untrusted string that I want to show as text in an HTML page. I need to escape the chars ' < ' and ' & ' as HTML entities. The less fuss the better.
...
How to initialize a List to a given size (as opposed to capacity)?
...
List<string> L = new List<string> ( new string[10] );
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Difference between is and as keyword
... if an object can be cast to a specific type.
Example:
if (someObject is StringBuilder) ...
as
The as operator attempts to cast an object to a specific type, and returns null if it fails.
Example:
StringBuilder b = someObject as StringBuilder;
if (b != null) ...
Also related:
Casting
...