A string representation of a Guid can be obtained by using the built in ToString method
string myGuidString = myGuid.ToString();
Depending on your needs you can also format the Guid, by adding a format type argument to the ToString call.
var guid = new Guid("7febf16f-651b-43b0-a5e3-0da8da4...
Key Value Coding is integrated into NSObject using NSKeyValueCoding protocol.
What this means?
It means that any id object is capable of calling valueForKey method and its various variants like valueForKeyPath etc. '
It also means that any id object can invoke setValue method and its various vari...
The clone() method is used to create and return a copy of an object. This method arguable should be avoided as it is problematic and a copy constructor or some other approach for copying should be used in favour of clone().
For the method to be used all classes calling the method must implement the...
Google Apps Script does not require setup or installation. The only requirement is a Google Account. A Gmail account works as well as a Google Apps for Work/Education/Government account. You can create a new Google account by going to accounts.google.com
Start your first script by going to script.g...
Classes can be created dynamically through the use of Class.new.
# create a new class dynamically
MyClass = Class.new
# instantiate an object of type MyClass
my_class = MyClass.new
In the above example, a new class is created and assigned to the constant MyClass. This class can be instanti...
To do an insert on specific columns (as opposed to all of them) you must specify the columns you want to update.
INSERT INTO USERS (FIRST_NAME, LAST_NAME)
VALUES ('Stephen', 'Jiang');
This will only work if the columns that you did not list are nullable, identity, timestamp data type or compute...
If you wish to copy the contents of a slice into an initially empty slice, following steps can be taken to accomplish it-
Create the source slice:
var sourceSlice []interface{} = []interface{}{"Hello",5.10,"World",true}
Create the destination slice, with:
Length =...
Data types that represent monetary or currency values.
Data typeRangeStoragemoney-922,337,203,685,477.5808 to 922,337,203,685,477.58078 bytessmallmoney-214,748.3648 to 214,748.36474 bytes
See Boost Getting Started.
Most of the Boost libraries are header-only, meaning that there's nothing you have to compile or link to.
Make sure you are getting the most recent version of Boost:
Visit www.boost.org
Look for the Current Release download. Currently, this links here.
Select the ...
In Python 3, many of the dictionary methods are quite different in behaviour from Python 2, and many were removed as well: has_key, iter* and view* are gone. Instead of d.has_key(key), which had been long deprecated, one must now use key in d.
In Python 2, dictionary methods keys, values and items ...
Installing mongoose is as easy as running the npm command
npm install mongoose --save
But make sure you have also installed MongoDB for your OS or Have access to a MongoDB database.
Connecting to MongoDB database:
1. Import mongoose into the app:
import mongoose from 'mongoose';
2. Specify...
C++11
One of constraining function is to use trailing decltype to specify the return type:
namespace details {
using std::to_string;
// this one is constrained on being able to call to_string(T)
template <class T>
auto convert_to_string(T const& val, int )
->...
fn main() {
let maybe_cake = Some("Chocolate cake");
let not_cake = None;
// The unwrap method retrieves the value from the Option
// and panics if the value is None
println!("{}", maybe_cake.unwrap());
// The expect method works much like the un...
A React component can be defined as an ES6 class that extends the base React.Component class. In its minimal form, a component must define a render method that specifies how the component renders to the DOM. The render method returns React nodes, which can be defined using JSX syntax as HTML-like ta...
The Default keyword is used to execute an action when no other conditions match the input value.
Example:
switch('Condition')
{
'Skip Condition'
{
'First Action'
}
'Skip This Condition Too'
{
'Second Action'
}
Default
{
'Default Action'
}
}
Output:
D...
Fixnum#to_s takes an optional base argument and represents the given number in that base:
2.to_s(2) # => "10"
3.to_s(2) # => "11"
3.to_s(3) # => "10"
10.to_s(16) # => "a"
If no argument is provided, then it represents the number in bas...
% Define serial port with a baud rate of 115200
rate = 115200;
if ispc
s = serial('COM1', 'BaudRate',rate);
elseif ismac
% Note that on OSX the serial device is uniquely enumerated. You will
% have to look at /dev/tty.* to discover the exact signature of your
% serial device
...
