Tutorial by Examples: p

Operators that bound tighter (higher precedence) are listed first. OperatorsPrecedence group (≥3.0)PrecedenceAssociativity.∞left?, !, ++, --, [], (), {}(postfix)!, ~, +, -, ++, --(prefix)~> (swift ≤2.3)255left<<, >>BitwiseShiftPrecedence160none*, /, %, &, &*MultiplicationPrec...

let Source = Folder.Files("\\jsds1.live\dfs\Userprofiles\ixh500\UPM_Profile\desktop\PQ Desktop Demos\Set 2"), #"Lowercased Text" = Table.TransformColumns(Source,{{"Extension", Text.Lower}}), #"Filtered Rows" = Table.SelectRows(#"Lowercased ...

Previous Quarter Sales:=CALCULATE(FactSales[Sales], PREVIOUSQUARTER(DimDate[DateKey])) (Calculates the total sales for the previous quarter, based on the Sales column in the FactSales table and the DateKey in the DimDate table, depending on the filters applied in a PivotTable or PivotChart)

This is contrived; but some COBOL programmers may prefer the positive clarity, versus using NOT in conditional expressions (especially with the logic error prone var NOT = value OR other-value). if action-flag = "C" or "R" or "U" or "D" continue else...

program-one. FD important-file. 01 file-record. COPY record-layout. DATA DIVISION. 01 memory-record. COPY record-layout. PROCEDURE DIVISION. ... COPY record-move. ... COPY record-move. program-two. DATA DIVISION. 01 print-record. COPY record-lay...

To promote a node or set of nodes, run docker node promote from a manager node: docker node promote node-3 node-2 Node node-3 promoted to a manager in the swarm. Node node-2 promoted to a manager in the swarm. To demote a node or set of nodes, run docker node demote from a manager node: doc...

(The following is a simplified version of what the Java Language Specification says. For a deeper understanding, you need to read the specification itself.) Happens-before relationships are the part of the Memory Model that allow us to understand and reason about memory visibility. As the JLS say...

We start off by creating an audio context and then create an oscillator which is the easiest way to check that your setup works. (Example fiddle) // We can either use the standard AudioContext or the webkitAudioContext (Safari) var audioContext = (window.AudioContext || window.webkitAudioContext);...

The best way to get started using Spring-Integration in your project is with a dependency management system, like gradle. dependencies { compile 'org.springframework.integration:spring-integration-core:4.3.5.RELEASE' } Below is a very simple example using the gateway, service-activator mes...

Step 1: First of all follow these two steps to add in app functionality : 1. Add the library using : repositories { mavenCentral() } dependencies { compile 'com.anjlab.android.iab.v3:library:1.0.+' } 2. Add permission in manifest file. <u...

You can install Celery either via the Python Package Index (PyPI) or from source. To install the latest version using pip: $ pip install celery To install using easy_install: $ easy_install celery Downloading and installing from source Download the latest version of Celery from http://pypi...

This example will create an EC2 instance of t2.micro type in N.Virginia region running Amazon Linux. During the execution, it will ask to select the KeyPair to use and an I.P. CIDR from where you can SSH to the instance, use default to make SSH open to the internet { "AWSTemplateFormatVersion"...

Assuming that you are working with Windows 7 PC Step 1: GOTO -> C:\Windows\System32\drivers\etc Where you will find a file named “hosts”, kindly copy it and paste it at the same location. A copy file of hosts will be created there. Now we need to make some modifications in this file but if you...

SQOOP provides facility to import all tables sqoop import-all-tables \ --connect <rdbms-jdbc-url> \ --username <username> \ --password <password> \ --hive-import \ --create-hive-table \ --hive-database <dbname> \ --warehouse-dir <warehouse-dir> Important poin...

For interacting with plots Matplotlib offers GUI neutral widgets. Widgets require a matplotlib.axes.Axes object. Here's a slider widget demo that ùpdates the amplitude of a sine curve. The update function is triggered by the slider's on_changed() event. import numpy as np import matplotlib.pyplot...

A good VOD (Video On Demand) service should start with the basics. Lets say you have a directory on your server that is not publicly accessible, yet through some sort of portal or paywall you want to allow users to access your media. var movie = path.resolve('./public/' + req.params.filename); ...

You can also use flent-ffmpeg to convert .mp4 files to .flv files, or other types: res.contentType('flv'); var pathToMovie = './public/' + req.params.filename; var proc = ffmpeg(pathToMovie) .preset('flashvideo') .on('end', function () { console.log(...

s/foo/bar/; # replace "foo" with "bar" in $_ my $foo = "foo"; $foo =~ s/foo/bar/; # do the above on a different variable using the binding operator =~ s~ foo ~ bar ~; # using ~ as a delimiter $foo = s/foo/bar/r; # non-destructive r flag: returns the repl...

This example uses the map format introduced in Erlang/OTP 18.0. %% A module implementing a supervisor usually has a name ending with `_sup`. -module(my_sup). -behaviour(supervisor). %% API exports -export([start_link/0]). %% Behaviour exports -export([init/1]). start_link() -> ...

We initialize the data: [X,Y] = meshgrid(1:2:10); Z = X.*cos(Y) - Y.*sin(X); The surface looks like the following. Now we set the points where we want to interpolate: [Vx,Vy] = meshgrid(1:0.25:10); We now can perform nearest interpolation, Vz = interp2(X,Y,Z,Vx,Vy,'nearest'); line...