Tutorial by Examples: co

Jdbc Inbound Adapter - xml configuration

In the official reference document, it says: The main function of an inbound Channel Adapter is to execute a SQL SELECT query and turn the result set as a message. The message payload is the whole result set, expressed as a List, and the types of the items in the list depend on the row-mapping st...

spring-integration • Jdbc Integration

Jdbc Outbound Channel Adapter - xml configuration

In the Spring Integration Reference Docuement, it says: The outbound Channel Adapter is the inverse of the inbound: its role is to handle a message and use it to execute a SQL query. The message payload and headers are available by default as input parameters to the query... Java code p...

spring-integration • Jdbc Integration

complex example with text and shapes

A green rect with a complex mask applied to it showing the background image. <svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <mask id="myMask0"> <circle cx="50" c...

SVG • mask

Filtering Examples, from Simple To More Complex ones

Plain Vanilla Filtering To filter any view, override its get_queryset method to return a filtered query set class HREmployees(generics.ListAPIView): def get_queryset(self): return Employee.objects.filter(department="Human Resources") All the API functions will then use t...

django-rest-framework • Filters

Command Handling over Serial

byte incoming; String inBuffer; void setup() { Serial.begin(9600); // or whatever baud rate you would like } void loop(){ // setup as non-blocking code if(Serial.available() > 0) { incoming = Serial.read(); if(incoming == '\n') { // newline, car...

arduino • Serial Communication

Compound view for SVG/VectorDrawable as drawableRight

Main motive to develop this compound view is, below 5.0 devices does not support svg in drawable inside TextView/EditText. One more pros is, we can set height and width of drawableRight inside EditText. I have separated it from my project and created in separate module. Module Name : custom_edit_d...

Android • Creating Custom Views

The currentColor keyword

currentColor is most usefull in inline SVGs. With this you can inherit the parents css color and use it everywhere colors are used in SVG. In this example the first circle uses the text color as fill color, and the second circle uses it as the stroke color. <html> <head> ...

SVG • Colors

Powershell external collector script function

<# .DESCRIPTION Writes the metric out in bosun external collector format which is compatible with scollector external scripts .PARAMETER metric Name of the metric (eg : my.metric) .PARAMETER type Type of metric (counter, gauge, etc) .PARAMETER unit ...

Bosun • Scollector: External Collectors

Create configuration in the app/config/config.yml

amazingservice: url: 'http://amazing.com' client_id: 'test_client_1' client_secret: 'test_secret' This is a basic example for create configuration in yml format, for following the yml format you can take deeper configuration.

symfony2 • Configuration for own bundles

Set the config in the created bundle

For instance you have a bundle, which generated by the symfony console. In this case in the DependencyInjection/Configuration.php you have to insert your configuration representation: $treeBuilder = new TreeBuilder(); $rootNode = $treeBuilder->root('amazingservice'); $rootNod...

symfony2 • Configuration for own bundles

Request a merkle block with bitcore-p2p

In this example we will ask the bitcoin network for the merkle block number 442603. In order to do this we need to send a filterload message and then we have to send a getdata message using the inventory type MSG_MERKLEBLOCK. The peers should reply with a merkleblock message for the requested bloc...

bitcoin • Thin Clients

ROC-AUC score with overriding and cross validation

One needs the predicted probabilities in order to calculate the ROC-AUC (area under the curve) score. The cross_val_predict uses the predict methods of classifiers. In order to be able to get the ROC-AUC score, one can simply subclass the classifier, overriding the predict method, so that it would a...

scikit-learn • Receiver Operating Characteristic (ROC)

Configure facelets.SKIP_COMMENTS

You must to add to web.xml a configuration tag like this: <context-param> <param-name>facelets.SKIP_COMMENTS</param-name> <param-value>true</param-value> </context-param> Now you can use normal HTML comments tag  <!-- <...

jsf • Comments in JSF

Removing incomplete rows

There might be times where you have a data frame and you want to remove all the rows that might contain an NA value, for that the function complete.cases is the best option. We will use the first 6 rows of the airquality dataset to make an example since it already has NAs x <- head(airquality) ...

R Language • Cleaning data

Constant Expressions

A constant expression is an expression that yields a primitive type or a String, and whose value can be evaluated at compile time to a literal. The expression must evaluate without throwing an exception, and it must be composed of only the following: Primitive and String literals. Type ca...

Java Language • Expressions

Controlling Spark SQL Shuffle Partitions

In Apache Spark while doing shuffle operations like join and cogroup a lot of data gets transferred across network. Now, to control the number of partitions over which shuffle happens can be controlled by configurations given in Spark SQL. That configuration is as follows: spark.sql.shuffle.partiti...

apache-spark • Configuration: Apache Spark SQL

Custom completion block for Custom Methods

1- Define Your own custom Block typedef void(^myCustomCompletion)(BOOL); 2- Create custom method which takes your custom completion block as a parameter. -(void) customMethodName:(myCustomCompletion) compblock{ //do stuff // check if completion block exist; if we do not check it will ...

iOS • Block

Stateless React Components in Typescript

React components that are pure functions of their props and do not require any internal state can be written as JavaScript functions instead of using the standard class syntax, as: import React from 'react' const HelloWorld = (props) => ( <h1>Hello, {props.name}!</h1> ); ...

React • Using ReactJS with Typescript

Stateless and property-less Components

The simplest react component without a state and no properties can be written as: import * as React from 'react'; const Greeter = () => <span>Hello, World!</span> That component, however, can't access this.props since typescript can't tell if it is a react component. To access ...

React • Using ReactJS with Typescript

Decode a Date

In case you have json with an ISO date string like this JSON.stringify({date: new Date()}) // -> "{"date":"2016-12-12T13:24:34.470Z"}" You can map it to elm Date type: import Html exposing (text) import Json.Decode as JD import Date payload = ""&...

Elm Language • Json.Decode