Tutorial by Examples: ti

[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...

Function scope is the special scope for labels. This is due to their unusual property. A label is visible through the entire function it is defined and one can jump (using instruction gotolabel) to it from any point in the same function. While not useful, the following example illustrate the point: ...

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...

It can be difficult to test functions with poor asymptotic complexity using quickcheck as the random inputs are not usually size bounded. By adding an upper bound on the size of the input we can still test these expensive functions. import Data.List(permutations) import Test.QuickCheck longRunn...

el-get is an open source package management system for GNU Emacs. el-get works with melpa, as well as with many common version control systms. Its documentation includes a simple self-installer for your .emacs: (unless (require 'el-get nil t) (url-retrieve "https://raw.github.com/dim...

Function-like macros are similar to inline functions, these are useful in some cases, such as temporary debug log: #ifdef DEBUG # define LOGFILENAME "/tmp/logfile.log" # define LOG(str) do { \ FILE *fp = fopen(LOGFILENAME, "a"); \ ...

We can create a Map from a list of tuples like this: Map.fromList [("Alex", 31), ("Bob", 22)] A Map can also be constructed with a single value: > Map.singleton "Alex" 31 fromList [("Alex",31)] There is also the empty function. empty :: Map k a ...

This time we are going to declare a class decorator that will add some metadata to a class when we applied to it: function addMetadata(target: any) { // Add some metadata target.__customMetadata = { someKey: "someValue" }; // Return target ret...

The regular composition works for unary functions. In the case of binary, we can define (f .: g) x y = f (g x y) -- which is also = f ((g x) y) = (f . g x) y -- by definition of (.) = (f .) (g x) y = ((f .) . g) x y Thus,...

You can configure lint by adding a lintOptions section in the build.gradle file: android { //..... lintOptions { // turn off checking the given issue id's disable 'TypographyFractions','TypographyQuotes' // turn on the given issue id's enable 'Rtl...

Detailed instructions on getting reflection set up or installed.

The Leaflet package is designed to integerate with Shiny In the ui you call leafletOutput() and in the server you call renderLeaflet() library(shiny) library(leaflet) ui <- fluidPage( leafletOutput("my_leaf") ) server <- function(input, output, session){ out...

This converter will chain multiple converters together. public class ValueConverterGroup : List<IValueConverter>, IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { return this.Aggregate(value, (current, converte...

In the root of your project, make sure Bower is installed (npm install -g bower) and run bower init. This will create a bower.json file in your project's directory. Create a new file called .bowerrc to your root directory. It should contain the following: { "directory": "public/b...

The following technique allows you to add your content to an HTML element and center it both horizontally and vertically without worrying about its height or width. The outer container should have display: table; The inner container should have display: table-cell; should have vertical-al...

Read-only properties were always possible in VB.NET in this format: Public Class Foo Private _MyProperty As String = "Bar" Public ReadOnly Property MyProperty As String Get Return _MyProperty End Get End Property End Class The new version of Visual Basi...

Similar to partial classes the new version of Visual Basic is now able to handle partial modules and partial interfaces. The syntax and behaviour is exactly the same as it would be for partial classes. A partial module example: Partial Module Module1 Sub Main() Console.Write("Ping -&g...

you can use -c <name>=<value> to add a configuration only for one command. To commit as an other user without having to change your settings in .gitconfig : git -c user.email = mail@example commit -m "some message" Note: for that example you don't need to precise both user...

Go to Help → About Eclipse → Check if the m2e feature is there: .