Tutorial by Examples: x

Clasic ways to execute shell code in Ruby:

Exec: exec 'echo "hello world"' or exec ('echo "hello world"') The System Command: system 'echo "hello world"' Will output "hello world" in the command window. or system ('echo "hello world"') The system command can return a true if ...

Ruby Language • Operating System or Shell commands

Introduction to regular expressions in Kotlin

This post shows how to use most of the functions in the Regex class, work with null safely related to the Regex functions, and how raw strings makes it easier to write and read regex patterns. The RegEx class To work with regular expressions in Kotlin, you need to use the Regex(pattern: String) cl...

Kotlin • Regex

Get help on available mix tasks

To list available mix tasks use: mix help To get help on a specific task use mix help task e.g.: mix help cmd

Elixir Language • Mix

Instalating Guide JavaFX 8

First of all, I will use Netbeans for this tutorial and this Windows version. Intall Scene Builder: When you have installed Netbeans on your computer, you must install Gluon Scene Builder. Nowadays, Oracle does´t work with Scene Builder and they made it Open Source, to work with the Gluon versi...

javafx-8 • Getting started with javafx-8

HTML text in UILabel

NSString * htmlString = @"<html><body> <b> Example bold text in HTML </b> </body></html>"; NSAttributedString * attrStr = [[NSAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUnicodeStringEncoding] options:@{ NSDocumentTypeDocumentAt...

iOS • attributedText in UILabel

Set different property to text in single UILabel

The first step you need to preform is to create a NSMutableAttributedString object. The reason we create a NSMutableAttributedString instead of NSAttributedString is because it enables us to append string to it. NSString *fullStr = @"Hello World!"; NSMutableAttributedString *attString =[...

iOS • attributedText in UILabel

Applying a system font to a TextView

In the following code you need to replace fontsname by the name of the font you would like to use: TextView lblexample = (TextView) findViewById(R.id.lblexample); lblexample.setTypeface(Typeface.createFromFile("/system/fonts/" + "fontsname" + ".ttf"));

Android • Getting system font names and using the fonts

Secure express.js 3 Application

The configuration to make a secure connection using express.js (Since version 3): var fs = require('fs'); var http = require('http'); var https = require('https'); var privateKey = fs.readFileSync('sslcert/server.key', 'utf8'); var certificate = fs.readFileSync('sslcert/server.crt', 'utf8'); ...

Node.js • Securing Node.js applications

Simple Example of CompletableFuture

In the example below, the calculateShippingPrice method calculates shipping cost, which takes some processing time. In a real world example, this would e.g. be contacting another server which returns the price based on the weight of the product and the shipping method. By modeling this in an async ...

Java Language • CompletableFuture

Painfull listener for getting notice, when the view is completely drawn now is so simple and awesome with Kotlin's extension

mView.afterMeasured { // inside this block the view is completely drawn // you can get view's height/width, it.height / it.width } Under the hood inline fun View.afterMeasured(crossinline f: View.() -> Unit) { viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlob...

Kotlin • Kotlin Android Extensions

Example to Import Data without a Format File(using Native Format )

REM Truncate table (for testing) SQLCMD -Q "TRUNCATE TABLE TestDatabase.dbo.myNative;" REM Import data bcp TestDatabase.dbo.myNative IN D:\BCP\myNative.bcp -T -n REM Review results SQLCMD -Q "SELECT * FROM TestDatabase.dbo.myNative;"

Microsoft SQL Server • bcp (bulk copy program) Utility

Adapter (UML & example situation)

To make the use of the adapter pattern and the kind of situation when it may be applied more imaginable, a small, simple and very concrete example is given here. There will be no code in here, just UML and a description of the example situation and its problem. Admittedly, the UML content is writte...

Design patterns • Adapter

Install JavaFX and Demos

For very first step please make sure your java version is based on Oracle's JDK since the OpenJDP does not support JavaFX yet. So, go to the Oracle Java download page and download JDK suitable for your operating system and computer architecture. If you want to study Oracle's java examples, find th...

javafx-8 • Getting started with javafx-8

example:

String myStr = convert("Lê Minh Thoại là người Việt Nam"); converted: "Le Minh Thoai la nguoi Viet Nam"

Android • Convert vietnamese string to english string Android

Adding XML Documentation to Entity Classes

On every generated model classes there are no documentation comments added by default. If you want to use XML documentation comments for every generated entity classes, find this part inside [modelname].tt (modelname is current EDMX file name): foreach (var entity in typeMapper.GetItemsToGenerate&l...

Entity Framework • .t4 templates in entity-framework

Distributed training example

import tensorflow as tf FLAGS = None def main(_): ps_hosts = FLAGS.ps_hosts.split(",") worker_hosts = FLAGS.worker_hosts.split(",") # Create a cluster from the parameter server and worker hosts. cluster = tf.train.ClusterSpec({"ps": ps_hosts,...

tensorflow • Minimalist example code for distributed Tensorflow.

Optimizing Error Search by Extended Debugging

Using Line Numbers ... and documenting them in case of error ("The importance of seeing Erl") Detecting which line raises an error is a substantial part of any debugging and narrows the search for the cause. To document identified error lines with a short description completes a successf...

excel-vba • Excel-VBA Optimization

Remove a key value pair from an existing hash table

An example, to remove a "Key2" key with a value of "Value2" from the hash table, using the remove operator: $hashTable = @{ Key1 = 'Value1' Key2 = 'Value2' } $hashTable.Remove("Key2", "Value2") $hashTable #Output Name ...

PowerShell • HashTables