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Super-simple example of C# observer/observable with delegates
I recently started digging into C# but I can't by my life figure out how delegates work when implementing the observer/observable pattern in the language.
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NUnit vs. Visual Studio 2008's test projects for unit testing [closed]
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The unit-testing framework doesn't actually matter much, because you can convert test classes with separate project files and conditional compilation (like this, Visual Studio → NUnit):
#if !NUNIT
using Microsoft.VisualStudio.TestTools.UnitTesting;
#else
using NUnit.Framework;
using Te...
How do I make class methods / properties in Swift?
... static var all = [Foo]() // static type property
class var comp: Int { // computed type property
return 42
}
class func alert() { // type method
print("There are \(all.count) foos")
}
}
Foo.alert() // There are 0 foos
let f = Foo()
Foo.all.a...
Creating a new DOM element from an HTML string using built-in DOM methods or Prototype
...ype, to provide access to the template's contents. This means that you can convert an HTML string to DOM elements by setting the innerHTML of a <template> element, then reaching into the template's .content property.
Examples:
/**
* @param {String} HTML representing a single element
* @ret...
How do you cast a List of supertypes to a List of subtypes?
... methods.
Filtering the list based on the type
A more type-safe way of converting from a List<Supertype> to a List<Subtype> is to actually filter the list, and create a new list that contains only elements that have certain type. There are some degrees of freedom for the implementat...
Should I use an exception specifier in C++?
... extensibility.
virtual void open() throw( FileNotFound );
might evolve into
virtual void open() throw( FileNotFound, SocketNotReady, InterprocessObjectNotImplemented, HardwareUnresponsive );
You could really write that as
throw( ... )
The first is not extensible, the second is overambitiou...
How to delete duplicate lines in a file without sorting it in Unix?
... last line if the file has an even number of lines.
To convert scripts which used the former behavior of N (deleting
the pattern space upon reaching the EOF) to scripts compatible with
all versions of sed, change a lone "N;" to "$d;N;".
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git:// protocol blocked by company, how can I get around that?
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For a little more control of which URL gets converted, you can specify part of URL as well. For example: I have a private internal server 'myserver.lan.example.com' that hosts git repos over SSH (gitlab) but not HTTPS. Therefore, I must use SSH if I want to take adva...
What is the purpose of static keyword in array parameter of function like “char s[static 10]”?
...ameter as ‘‘array of type’’ shall be adjusted to ‘‘qualified pointer to type’’, where the type qualifiers (if any) are those specified within the [ and ] of the array type derivation. If the keyword static also appears within the [ and ] of the array type derivation, then for each ca...
PHP: Count a stdClass object
...e more, it might be better to use the $assoc param with json_encode, which converts it to an array. That property you're getting is named from the timestamp which is going to be a right pain to access regularly. As an array you could just do count( $trends[0] );
– Rob Drimmie
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