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How to check if an object is a certain type
...ou can simply compare them using the Is operator.
So your code should actually be written like this:
Sub FillCategories(ByVal Obj As Object)
Dim cmd As New SqlCommand("sp_Resources_Categories", Conn)
cmd.CommandType = CommandType.StoredProcedure
Obj.DataSource = cmd.ExecuteReader
I...
What's the “big idea” behind compojure routes?
...ave been using Compojure to write a basic web application. I'm hitting a wall with Compojure's defroutes syntax, though, and I think I need to understand both the "how" and the "why" behind it all.
...
In JavaScript, is returning out of a switch statement considered a better practice than using break?
...
A break will allow you continue processing in the function. Just returning out of the switch is fine if that's all you want to do in the function.
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Check whether a variable is a string in Ruby
...return true for instances from derived classes.
class X < String
end
foo = X.new
foo.is_a? String # true
foo.kind_of? String # true
foo.instance_of? String # false
foo.instance_of? X # true
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Use git “log” command in another folder
...with the --git-dir parameter, before passing any commands.
git --git-dir /foo/bar/.git log
(Specifying the .git directory is necessary.) From the documentation:
--git-dir=<path>
Set the path to the repository. This can also be controlled by setting the GIT_DIR environment variable....
C# member variable initialization; best practice?
...rties (field initializers cannot) - i.e.
[DefaultValue("")]
public string Foo {get;set;}
public Bar() { // ctor
Foo = "";
}
Other than that, I tend to prefer the field initializer syntax; I find it keeps things localized - i.e.
private readonly List<SomeClass> items = new List<SomeCla...
Any equivalent to .= for adding to beginning of string in PHP?
...
Nope. But you can do
$foo = "bar" . $foo
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Setting up foreign keys in phpMyAdmin?
...t to use phpMyAdmin to set up relations, you have to do 2 things. First of all, you have to define an index on the foreign key column in the referring table (so foo_bar.foo_id, in your case). Then, go to relation view (in the referring table) and select the referred column (so in your case foo.id) a...
Why is TypedReference behind the scenes? It's so fast and safe… almost magical!
...ecification, the constructs used to implement them under the hood (vararg calling convention, TypedReference type, arglist, refanytype, mkanyref, and refanyval instructions) are perfectly documented in the CLI Specification (ECMA-335) in the Vararg library.
Being defined in the Vararg Library makes ...
Mockito: Trying to spy on method is calling the original method
... = new LinkedList();
List spy = spy(list);
// Impossible: real method is called so spy.get(0) throws IndexOutOfBoundsException (the list is yet empty)
when(spy.get(0)).thenReturn("foo");
// You have to use doReturn() for stubbing
doReturn("foo").when(spy).get(0);
In your case it goes something l...