Tutorial by Examples: b

Kubectl in command line

After you have a running cluster you can manage it with the kubectl command. Most of the commands you can get with the kubectl --help command, but I show you the most common commands, for manage and getting info about your cluster, nodes, pods, services and labels. For getting information about t...

kubernetes • Getting started with kubernetes

Rabin Karp

The Rabin–Karp algorithm or Karp–Rabin algorithm is a string searching algorithm that uses hashing to find any one of a set of pattern strings in a text.Its average and best case running time is O(n+m) in space O(p), but its worst-case time is O(nm) where n is the length of the text and m is the le...

algorithm • Searching

Longest Increasing Subsequence Basic Information

The Longest Increasing Subsequence problem is to find subsequence from the give input sequence in which subsequence's elements are sorted in lowest to highest order. All subsequence are not contiguous or unique. Application of Longest Increasing Subsequence: Algorithms like Longest Increasing Subs...

algorithm • Longest Increasing Subsequence

Sample AJAX request w/ binding

Page.html <div data-bind="foreach: blogs"> <br /> <span data-bind="text: entryPostedDate"></span> <br /> <h3> <a data-bind="attr: { href: blogEntryLink }, text: title"></a> </h3> ...

knockout.js • AJAX requests and binding

2. String Manipulation Basics

'Base string Dim exStr : exStr = " <Head>data</Head> " 'Left Dim res: res = Left(exStr,6) 'res now equals " <Head" 'Right Dim res: res = Right(exStr,6) 'res now equals "Head> " 'Mid Dim res: res = Mid(exStr,8,4) 'res now equals "data&quot...

vbscript • Strings

createDissolvedGDB to create a file gdb on the workspace

def createDissolvedGDB(workspace, gdbName): gdb_name = workspace + "/" + gdbName + ".gdb" if(arcpy.Exists(gdb_name): arcpy.Delete_management(gdb_name) arcpy.CreateFileGDB_management(workspace, gdbName, "") else: arcpy.CreateFi...

Python Language • ArcPy

Using the PROMPT_COMMAND envrionment variable

When the last command in an interactive bash instance is done, the evaluated PS1 variable is displayes. Before actually displaying PS1 bash looks whether the PROMPT_COMMAND is set. This value of this var must be a callable program or script. If this var is set this program/script is called BEFORE th...

Bash • Handling the system prompt

Using BigDecimal instead of float

Due to way that the float type is represented in computer memory, results of operations using this type can be inaccurate - some values are stored as approximations. Good examples of this are monetary calculations. If high precision is necessary, other types should be used. e.g. Java 7 provides Big...

Java Language • BigDecimal

MVVM Example using DataBinding Library

The whole point of MVVM is to separate layers containing logic from the view layer. On Android we can use the DataBinding Library to help us with this and make most of our logic Unit-testable without worrying about Android dependencies. In this example I'll show the central components for a stupid...

Android • MVVM (Architecture)

Removing features with high numbers of NA

If a feature is largely lacking data, it is a good candidate for removal: library(VIM) data(sleep) colMeans(is.na(sleep)) BodyWgt BrainWgt NonD Dream Sleep Span Gest 0.00000000 0.00000000 0.22580645 0.19354839 0.06451613 0.06451613 0.06451613 Pred ...

R Language • Feature Selection in R -- Removing Extraneous Features

Disable Setup Wizard

Open Jenkins default config file and add in JAVA_ARGS next key -Djenkins.install.runSetupWizard=false In Ubuntu 16 default file places in /etc/default/jenkins Create groovy file by path $JENKINS_HOME/init.groovy.d/basic-security.groovy In Ubuntu 16 Jenkins home directory places in /var/li...

jenkins • Jenkins Groovy Scripting

Setup for Debian-based systems

(This assumes MySQL has been installed and that sudo is being used.) Generating a CA and SSL keys Make sure OpenSSL and libraries are installed: apt-get -y install openssl apt-get -y install libssl-dev Next make and enter a directory for the SSL files: mkdir /home/ubuntu/mysqlcerts cd /home...

MySQL • SSL Connection Setup

Matching a backslash

If you want to match a backslash in your regular expression, you'll have to escape it. Backslash is an escape character in regular expressions. You can use '\\' to refer to a single backslash in a regular expression. However, backslash is also an escape character in Java literal strings. To make a...

Java Language • Regular Expressions

Find objects by name

Use the ls() commands to find objects by name: freds = cmds.ls("fred") #finds all objects in the scene named exactly 'fred', ie [u'fred', u'|group1|fred'] Use * as a wildcard: freds = cmds.ls("fred*") # finds all objects whose name starts with 'fred' # [u'fred', u'freder...

maya • Finding scene objects

Basic implemetation

To add the BottomNavigationView follow these steps: Add in your build.gradle the dependency: compile 'com.android.support:design:25.1.0' Add the BottomNavigationView in your layout: <android.support.design.widget.BottomNavigationView xmlns:android="http://schemas.andro...

Android • BottomNavigationView

Setting JVM Options Via Ebextensions Config

To setup JVM options inside elastic beanstalk, your bundle file must be like this: -bundle.zip |--.ebextensions //do not forget the dot at the beginning of the name |--jvm.config |--java_app.jar And, the jvm.config file must be set like this: option_settings: ...

elastic-beanstalk • Setting JVM Options

Maximum Path Sum Basic Information

Maximum Path Sum is an algorithm to find out a path such that sum of element(node) of that path is greater than any other path. For example, let's we have a we a triangle as shown below. 3 7 4 2 4 6 8 5 9 3 In above triangle, find the maximum path which has ma...

algorithm • Maximum Path Sum Algorithm

Updating the UI from a Background Thread

It is common to use a background Thread for doing network operations or long running tasks, and then update the UI with the results when needed. This poses a problem, as only the main thread can update the UI. The solution is to use the runOnUiThread() method, as it allows you to initiate code exe...

Android • Thread

Customizing sublime text

Once you have package control installed, it is super easy to install any plugin, theme, color scheme, syntax that you want! plugin: perform an action (compile your less code into css for example) theme: change the entire skin of sublime text (tabs, sidebar, command palette, etc) color scheme: c...

sublimetext3 • Package Control

A somewhat simpler function that can be used in one line

Public Function TableExists(value as String) as Boolean On Error Resume Next TableExists = Len(CurrentDb.Tabledefs(value).Name & "") > 0 End Function

access-vba • Check if Table Exists in Current DB