Tutorial by Examples: g

A single-value metrics aggregation that calculates an approximate count of distinct values. Values can be extracted either from specific fields in the document or generated by a script. POST /index/_search?size=0 { "aggs" : { "type_count" : { "ca...

A multi-value metrics aggregation that computes stats over numeric values extracted from the aggregated documents. These values can be extracted either from specific numeric fields in the documents, or be generated by a provided script. The extended_stats aggregations is an extended version of the ...

Consider this example: He went into the cafe "Dostoevski" and said: "Good evening." Here we have two sets of quotes. Let's assume we want to match both, so that our regex matches at "Dostoevski" and "Good evening." At first, you could be tempted to keep...

Prerequisites: Setting up the Development Environment Before we get started, we have to setup our environment. Install Node.js and npm if they are not already on your machine. Verify that you are running at least node 6.9.x and npm 3.x.x by running node -v and npm -v in a terminal/console wi...

Example shows 5 items per row: <div *ngFor="let item of items; let i = index"> <div *ngIf="i % 5 == 0" class="row"> {{ item }} <div *ngIf="i + 1 < items.length">{{ items[i + 1] }}</div> <div *ngIf="i + 2 &l...

On the shoulders of the low level drivers, there is pomm. It proposes a modular approach, data converters, listen/notify support, database inspector and much more. Assuming, Pomm has been installed using composer, here is a complete example: <?php use PommProject\Foundation\Pomm; $loader = re...

While you are not allowed to use *ngIf and *ngFor in the same div (it will gives an error in the runtime) you can nest the *ngIf in the *ngFor to get the desired behavior. Example 1: General syntax <div *ngFor="let item of items; let i = index"> <div *ngIf="<your cond...

To get a value use the .getPropertyValue() method element.style.getPropertyValue("--var") To set a value use the .setProperty() method. element.style.setProperty("--var", "NEW_VALUE")

Set SECKET_KEY, then flashing message in view function: from flask import Flask, flash, render_template app = Flask(__name__) app.secret_key = 'some_secret' @app.route('/') def index(): flash('Hello, I'm a message.') return render_template('index.html') Then render the messages...

Set second argument when use flash() in view function: flash('Something was wrong!', 'error') In the template, set with_categories=true in get_flashed_messages(), then you get a list of tuples in the form of (message, category), so you can use category as a HTML class. {% with messages = get_fl...

This example will show you back navigation which is expected generally in most of the flows. You will have to add following code to every screen depending on expected behavior. There are 2 cases: If there are more than 1 screen on stack, device back button will show previous screen. If there is ...

Key Points :- used to created mutable (modifiable) string. Mutable :- Which can be changed. is thread-safe i.e. multiple threads cannot access it simultaneously. Methods :- public synchronized StringBuffer append(String s) public synchronized StringBuffer insert(int off...

<a-scene> <a-entity gltf-model="url(https://cdn.rawgit.com/KhronosGroup/glTF-Sample-Models/9176d098/1.0/Duck/glTF/Duck.gltf)" position="0 0 -5"></a-entity> </a-scene>

<a-scene> <a-assets> <a-asset-item id="duck" src="https://cdn.rawgit.com/KhronosGroup/glTF-Sample-Models/9176d098/1.0/Duck/glTF/Duck.gltf"></a-asset-item> </a-assets> <a-entity gltf-model="#duck" position="0 0 -5&quo...

using MongoDB.Bson; using System; using System.Diagnostics; using System.IO; namespace python_csharp { class Program { static void Main(string[] args) { // full path to .py file string pyScriptPath = "...../sum.py"; ...

The service describes the operations it performs in a service contract that it exposes publicly as metadata. // Define a service contract. [ServiceContract(Namespace="http://StackOverflow.ServiceModel.Samples")] public interface ICalculator { [OperationContract] dou...

Best way to include all library related to NPOI is NUGet Package Manager. Search for NPOI on NUGet package manager window. Once it is successfully installed all needed library will appear in reference section of your current project Then include the NPOI into your file like this using NPOI.SS...

If you want to see overall test coverage statistics than of course in Angular CLI you can just type below command, and see the bottom of your command prompt window for results. ng test --cc // or --code-coverage

if you want to see component's individual coverage of tests follow these steps. npm install --save-dev karma-teamcity-reporter Add `require('karma-teamcity-reporter')` to list of plugins in karma.conf.js ng test --code-coverage --reporters=teamcity,coverage-istanbul note that l...

C99 While writing // delimited comments, it is possible to make a typographical error that affects their expected operation. If one types: int x = 20; // Why did I do this??/ The / at the end was a typo but now will get interpreted into \. This is because the ??/ forms a trigraph. The ??/ tri...