Tutorial by Examples: b

ForEach() is defined on the List<T> class, but not on IQueryable<T> or IEnumerable<T>. You have two choices in those cases: ToList first The enumeration (or query) will be evaluated, copying the results into a new list or calling the database. The method is then called on each it...

We cannot break a string into arbitrary points (because a System.Char may not be valid alone because it's a combining character or part of a surrogate) then code must take that into account (note that with length I mean the number of graphemes not the number of code-units): public static IEnumerabl...

Sometimes a element needs to be created outside of the usual object structure in the fxml. This is where Define Blocks come into play: Contents inside a <fx:define> element are not added to the object created for the parent element. Every child element of the <fx:define> needs a fx:id...

Table Item The following class contains 2 properties a name (String) and the size (double). Both properties are wrapped in JavaFX properties to allow the TableView to observe changes. import javafx.beans.property.DoubleProperty; import javafx.beans.property.SimpleDoubleProperty; import javafx.be...

The following example encrypts data by using a hybrid cryptosystem consisting of AES GCM and OAEP, using their default parameter sizes and an AES key size of 128 bits. OAEP is less vulnerable to padding oracle attacks than PKCS#1 v1.5 padding. GCM is also protected against padding oracle attacks. ...

vim is a modal editor. This means that at any time inside a vim session, the user is going to be in one of the modes of operation. Each one of offers a different set commands, operations, key bindings... Normal mode (or Command mode) The mode vim starts in. From other modes, usually accessible ...

Characteristics of properties : Properties that can be retrieved from an object could have the following characteristics, Enumerable Non - Enumerable own While creating the properties using Object.defineProperty(ies), we could set its characteristics except "own". Properties which...

This example hides the red box (border) if the checkbox is not checked by making use of an IValueConverter. Note: The BooleanToVisibilityConverter used in the example below is a built-in value converter, located in the System.Windows.Controls namespace. XAML: <Window x:Class="StackOverflo...

You can bind to a property on a named element, but the named element must be in scope. <StackPanel> <CheckBox x:Name="MyCheckBox" IsChecked="True" /> <TextBlock Text="{Binding IsChecked, ElementName=MyCheckBox}" /> </StackPanel>

You can bind to a property of an ancestor in the visual tree by using a RelativeSource binding. The nearest control higher in the visual tree which has the same type or is derived from the type you specify will be used as the binding's source: <Grid Background="Blue"> <Grid ...

PS > Get-Member -InputObject $anObjectInstance This will return all members of the type instance. Here is a part of a sample output for String instance TypeName: System.String Name MemberType Definition ---- ---------- ---------- Clone ...

If you need to add an attribute through razor that has a - (hyphen) in the name you cannot simply do @Html.DropDownListFor(m => m.Id, Model.Values, new { @data-placeholder = "whatever" }) it will not compile. data-* attributes are valid and common in html5 for adding extra values t...

You can diff UTF-16 encoded files (localization strings file os iOS and macOS are examples) by specifying how git should diff these files. Add the following to your ~/.gitconfig file. [diff "utf16"] textconv = "iconv -f utf-16 -t utf-8" iconv is a program to convert differe...

The random() function can be used to generate pseudo-random numbers: void setup() { Serial.begin(9600); } void loop() { long randomNumber = random(500); // Generate a random number between 0 and 499 Serial.println(randomNumber); randomNumber = random(100, 1000); // Genera...

composer update composer update will update our dependencies as they are specified in composer.json. For example, if our project uses this configuration: "require": { "laravelcollective/html": "2.0.*" } Supposing we have actually installed the 2.0.1 version ...

name:john Searches for a single term (joe) in a single field (name)

+firstname:john +surname:doe Matches documents where firstname is john and surname is doe. + predix indicates that the search term must occur (AND). +firstname:john -surname:doe Matches documents where firstname is john and surname is not doe. - predix indicates that the search term must not occu...

name:(john doe^5) The ^ indicator can be used to boost a search term to increase it's relevance level meaning that documents containing doe are more relevant than ones containing john

By default you will get de codes and id's for optionsets and lookups. If you want to get the label as well, you need to add an extra header to the call. $.ajax({ url: Xrm.Page.context.getClientUrl() + '/api/data/v8.0/contacts', headers: { 'Accept': 'Application/json', ...

For performance reasons you should minimize the number of fields you are requesting from the API. You can use the select property to do so. This example fetches the name property of all accounts: $.ajax({ url: Xrm.Page.context.getClientUrl() + '/api/data/v8.0/accounts?$select=name', head...