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Understanding Python's “is” operator
...lly with certain objects.
E.g.
>>> class A(object):
... def foo(self):
... pass
...
>>> a = A()
>>> a.foo is a.foo
False
>>> id(a.foo) == id(a.foo)
True
Ref;
How to access property of anonymous type in C#?
...
Then from that you look up a property:
PropertyInfo p = t.GetProperty("Foo");
Then from that you can get a value:
object v = p.GetValue(o, null);
This answer is long overdue for an update for C# 4:
dynamic d = o;
object v = d.Foo;
And now another alternative in C# 6:
object v = o?.GetTy...
Use of alloc init instead of new
...be using a different method, such as [[SomeObject alloc] initWithString: @"Foo"]. If you're used to writing this, you get in the habit of doing it this way and so [[SomeObject alloc] init] may come more naturally that [SomeObject new].
...
S3 Static Website Hosting Route All Paths to Index.html
...th (HTML5) browser history who want to host on S3.
Suppose a user visits /foo/bear at your S3-hosted static web site. Given David's earlier suggestion, redirect rules will send them to /#/foo/bear. If your application's built using browser history, this won't do much good. However your application ...
Why do you use typedef when declaring an enum in C++?
...02000000
};
you'll have to use it doing something like :
enum TokenType foo;
But if you do this :
typedef enum e_TokenType
{
blah1 = 0x00000000,
blah2 = 0X01000000,
blah3 = 0X02000000
} TokenType;
You'll be able to declare :
TokenType foo;
But in C++, you can use only th...
How do I use extern to share variables between source files?
...y literals to get an enumeration value for the array size, exemplified by (foo.h): #define FOO_INITIALIZER { 1, 2, 3, 4, 5 } to define the initializer for the array, enum { FOO_SIZE = sizeof((int [])FOO_INITIALIZER) / sizeof(((int [])FOO_INITIALIZER)[0]) }; to get the size of the array, and extern i...
Dynamic Sorting within SQL Stored Procedures
... readable IMO:
SELECT
s.*
FROM
(SELECT
CASE @SortCol1
WHEN 'Foo' THEN t.Foo
WHEN 'Bar' THEN t.Bar
ELSE null
END as SortCol1,
CASE @SortCol2
WHEN 'Foo' THEN t.Foo
WHEN 'Bar' THEN t.Bar
ELSE null
END as SortCol2,
t.*
FROM
MyTable t) as...
How to default to other directory instead of home directory
...d.sh
Or you can create an alias or function in your $HOME/.bashrc file:
foo() { cd /d/work_space_for_my_company/project/code_source ; }
If the directory name includes spaces or other shell metacharacters, you'll need quotation marks; it won't hurt to add them even if they're not necessary:
foo...
Delete directories recursively in Java
...page, or stackoverflow.com/questions/35988192/…
– foo
Jul 3 '17 at 21:50
|
show 1 more comment
...
What is the difference between String.Empty and “” (empty string)?
...) for String.Empty arguments. The following equivalent functions
string foo()
{
return "foo" + "";
}
string bar()
{
return "bar" + string.Empty;
}
generate this IL
.method private hidebysig instance string foo() cil managed
{
.maxstack 8
L_0000: ldstr "foo"
L_0005: ret
}
....