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Create an enum with string values
...artially what enums are used for).
type Options = "hello" | "world";
var foo: Options;
foo = "hello"; // Okay
foo = "asdf"; // Error!
More : https://www.typescriptlang.org/docs/handbook/advanced-types.html#string-literal-types
Legacy Support
Enums in TypeScript are number based.
You can use...
How do I create a namespace package in Python?
...means there are now three types of object that can be created by an import foo:
A module represented by a foo.py file
A regular package, represented by a directory foo containing an __init__.py file
A namespace package, represented by one or more directories foo without any __init__.py files
Pac...
Import a file from a subdirectory?
...e an empty file named lib\__init__.py.
In lib\BoxTime.py, write a function foo() like this:
def foo():
print "foo!"
In your client code in the directory above lib, write:
from lib import BoxTime
BoxTime.foo()
Run your client code. You will get:
foo!
Much later -- in linux, it would loo...
How do I convert a NSString into a std::string?
...
NSString *foo = @"Foo";
std::string bar = std::string([foo UTF8String]);
Edit: After a few years, let me expand on this answer. As rightfully pointed out, you'll most likely want to use cStringUsingEncoding: with NSASCIIStringEncodin...
How to POST raw whole JSON in the body of a Retrofit request?
...
The @Body annotation defines a single request body.
interface Foo {
@POST("/jayson")
FooResponse postJson(@Body FooRequest body);
}
Since Retrofit uses Gson by default, the FooRequest instances will be serialized as JSON as the sole body of the request.
public class FooRequest {
...
Traverse a list in reverse order in Python
...
Use the built-in reversed() function:
>>> a = ["foo", "bar", "baz"]
>>> for i in reversed(a):
... print(i)
...
baz
bar
foo
To also access the original index, use enumerate() on your list before passing it to reversed():
>>> for i, e in reversed(li...
“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
...variable innodb_autoinc_lock_mode=1 (the default):
mysql> create table foo (id serial primary key, u int, unique key (u));
mysql> insert into foo (u) values (10);
mysql> select * from foo;
+----+------+
| id | u |
+----+------+
| 1 | 10 |
+----+------+
mysql> show create table fo...
Difference between shadowing and overriding in C#?
...ll inheritance...
suppose you have this classes:
class A {
public int Foo(){ return 5;}
public virtual int Bar(){return 5;}
}
class B : A{
public new int Foo() { return 1;} //shadow
public override int Bar() {return 1;} //override
}
then when you call this:
A clA = new A();
B cl...
Using Sinatra for larger projects via multiple files
...e is useless"
end
server_someproject.rb
module SomeProject
def self.foo bar
...
end
...
end
namespace "/someproject" do
set :views, settings.root
get "" do
redirect request.env["REQUEST_PATH"] + "/"
end
get "/" do
haml :view_someproject
end
...
Uniq by object attribute in Ruby
...y. The inject at the end of the following code would be an example:
class Foo
attr_accessor :foo, :bar, :baz
def initialize(foo,bar,baz)
@foo = foo
@bar = bar
@baz = baz
end
end
objs = [Foo.new(1,2,3),Foo.new(1,2,3),Foo.new(2,3,4)]
# find objects that are uniq with respect to a...