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Writing handler for UIAlertAction
...ult,
handler: {(alert: UIAlertAction!) in println("Foo")}))
this is the proper way to define handlers in Swift.
As Brian pointed out below, there are also easier ways to define these handlers. Using his methods is discussed in the book, look at the section titled Closures ...
Peak memory usage of a linux/unix process
Is there a tool that will run a command-line and report the peak RAM usage total?
20 Answers
...
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...
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 {
...
Install shows error in console: INSTALL FAILED CONFLICTING PROVIDER
I am experimenting with the NotesList sample program in the Android SDK. I've made a slight variation in the program, but when I install my edited version I keep getting the message INSTALL_FAILED_CONFLICTING_PROVIDER in the console when I try to install it when the original notes program is already...
“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...
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...
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...