The yield keyword allows lazy-evaluation of the collection. Forcibly loading the whole collection into memory is called eager evaluation.
The following code shows this:
IEnumerable<int> myMethod()
{
for(int i=0; i <= 8675309; i++)
{
yield return i;
}
}
...
// ...
Consider using Extension Methods as Functions which wrap other code, here's a great example that uses both a static method and and extension method to wrap the Try Catch construct. Make your code Bullet Proof...
using System;
using System.Diagnostics;
namespace Samples
{
/// <summary&g...
Database connections are set up using the CF Administrator tool. See Database Connections for how to connect a datasource.
To execute queries all you need is the <cfquery> tag. The <cfquery> tag connects to and opens the database for you, all you need to do is supply it with the name of...
Many database configurations require authentication (in the form of a username and password) before you can query the database. You can supply these using the username and password attributes.
Note: the username and password can also be configured against the datasource in the ColdFusion Administra...
A cached query is a query that has its results stored in the server's memory. The results are stored when the query is first run. From then on, whenever that query is requested again, ColdFusion will retrieve the results from memory.
You can cache a query using the cachedAfter attribute. If the que...
If you want to make internal classes or functions of an assembly accessable from another assembly you declare this by InternalsVisibleTo and the assembly name that is allowed to access.
In this example code in the assembly MyAssembly.UnitTests is allowed to call internal elements from MyAssembly.
...
Virtual Methods are methods in Java that are non-static and without the keyword Final in front. All methods by default are virtual in Java. Virtual Methods play important roles in Polymorphism because children classes in Java can override their parent classes' methods if the function being overriden...
async and await are two operators that are intended to improve performance by freeing up Threads and waiting for operations to complete before moving forward.
Here's an example of getting a string before returning it's length:
//This method is async because:
//1. It has async and Task or Task<...
C.I.A.s are intended as a simple way of getting attributes from whatever is calling the targeted method. There is really only 1 way to use them and there are only 3 attributes.
Example:
//This is the "calling method": the method that is calling the target method
public void doProcess()
...
using System.ComponentModel.DataAnnotations;
public class Post
{
public int Id { get; set; }
[StringLength(100)]
public string Title { get; set;}
[StringLength(300)]
public string Abstract { get; set; }
public string Description { get; set; }
}
Def...
Example showing how to create Guis using functions instead of labels.
Gui, Add, Button, gCtrlEvent vButton1, Button 1
Gui, Add, Button, gCtrlEvent vButton2, Button 2
Gui, Add, Button, gGoButton, Go Button
Gui, Add, Edit, vEditField, Example text
Gui, Show,, Functions instead of labels
CtrlEv...
Lambda expressions are similar to anonymous functions in other languages.
Lambda expressions are open formulas which also specify variables which are to be bound. Evaluation (finding the value of a function call) is then achieved by substituting the bound variables in the lambda expression's body, ...
You cam amend the time of a commit using
git commit --amend --date="Thu Jul 28 11:30 2016 -0400"
or even
git commit --amend --date="now"
If you make a commit as the wrong author, you can change it, and then amend
git config user.name "Full Name"
git config user.email "[email protected]"
git commit --amend --reset-author
[TimeStamp] attribute can be applied to only one byte array property in a given Entity class. Entity Framework will create a non-nullable timestamp column in the database table for that property. Entity Framework will automatically use this TimeStamp column in concurrency check.
using System.Compon...
Android Studio's Live templates can offer quite a few shortcuts for quick logging.
To use Live templates, all you need to do is to start typing the template name, and hit TAB or enter to insert the statement.
Examples:
logi → turns into → android.util.Log.i(TAG, "$METHOD_NAME$: $content$&q...
Caffe can run on multiple cores. One way is to enable multithreading with Caffe to use OpenBLAS instead of the default ATLAS. To do so, you can follow these three steps:
sudo apt-get install -y libopenblas-dev
Before compiling Caffe, edit Makefile.config, replace BLAS := atlas by BLAS := open
A...
What's between \Q and \E is treated as normal characters
#!/usr/bin/perl
my $str = "hello.it's.me";
my @test = (
"hello.it's.me",
"hello/it's!me",
);
sub ismatched($) { $_[0] ? "MATCHED!" : "DID NOT MATCH!" }
my @match = (
...
