Trending questions in Edureka Community

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1 answer

List of lines from a file

with open(fname) as f: ...READ MORE

Apr 30, 2018 in Python by Nietzsche's daemon
 • 4,260 points • 1,134 views
+1 vote
1 answer

How is data retrieved in Ethereum?

Blockchain uses the concept of Merkle trees ...READ MORE

Apr 16, 2018 in Blockchain by Shashank
 • 10,400 points • 1,680 views
0 votes
1 answer

How pbft is being used in blockchain?

PBFT can tolerate byzantine failures. For tolerating ...READ MORE

Apr 21, 2018 in Blockchain by Perry
 • 17,100 points • 1,546 views
0 votes
1 answer

Adding elements to a list in python

Use extend() instead: l = [5, 7, 12, ...READ MORE

Apr 23, 2018 in Python by Nietzsche's daemon
 • 4,260 points • 1,430 views
0 votes
1 answer

Run Unix command within Python

From the python docs, use the subprocess ...READ MORE

Apr 27, 2018 in Python by Nietzsche's daemon
 • 4,260 points • 1,244 views
0 votes
1 answer

Is there any way to write "map only" Hadoop jobs ?

You can easily set the number of ...READ MORE

Apr 16, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,716 views
0 votes
1 answer

ALTER and UPDATE MS Sql table simutaneously

First of all, you can’t perform this ...READ MORE

Apr 14, 2018 in Talend by code.reaper12
 • 3,500 points • 1,831 views
0 votes
1 answer

Is there any way to check for missing packages and install them in R?

There are 2 options: Either you can use ...READ MORE

Apr 17, 2018 in Data Analytics by nirvana
 • 3,090 points • 1,673 views
0 votes
1 answer

What happens if the controller nodes in Corda shuts down, will other nodes function independently?

If the network map goes offline nodes ...READ MORE

Apr 21, 2018 in Blockchain by Perry
 • 17,100 points • 1,534 views
0 votes
1 answer

AWS Free Tier restrict usage to one region

You need to understand this, yes AWS ...READ MORE

Apr 18, 2018 in Cloud Computing by hemant
 • 5,790 points • 1,629 views
0 votes
1 answer

What's the diff between Selenium RC and Selenium WebDriver?

RC works by injecting the JavaScript functions ...READ MORE

Apr 5, 2018 in Selenium by nsv999
 • 5,500 points • 2,185 views
0 votes
1 answer

What is the standard naming convention for the variables in R?

Use of period separator e.g. product.prices <- c(12.01, ...READ MORE

Apr 25, 2018 in Data Analytics by shams
 • 3,670 points • 1,346 views
+1 vote
1 answer

Running Talend Jobs from a Front End Tool

I am listing down few of the ...READ MORE

Apr 4, 2018 in Talend by code.reaper12
 • 3,500 points • 2,219 views
0 votes
1 answer

How secure is to implement blockchain at a smaller scale??

Blockchain relies on the number of nodes ...READ MORE

Apr 18, 2018 in Blockchain by Perry
 • 17,100 points • 1,623 views
0 votes
1 answer

I am learning looping statements. Can you tell me how 'for-each' works in Java?

While programming we often write code that ...READ MORE

Apr 17, 2018 in Java by Rishabh
 • 3,600 points • 1,661 views
0 votes
1 answer

How to find out the package version which is loaded in R?

You can use sessionInfo() to accomplish that. > ...READ MORE

Apr 18, 2018 in Data Analytics by zombie
 • 3,790 points • 1,639 views
0 votes
1 answer

How to set a custom install directory for a deb package with fpm

Here's something that you can try... the last ...READ MORE

Mar 26, 2018 in Big Data Hadoop by Amrinder
 • 140 points • 2,628 views
0 votes
1 answer

How can I use parallel so that it preserves the list of data frames

You can use pmap as follows: nc <- ...READ MORE

Apr 4, 2018 in Data Analytics by kappa3010
 • 2,090 points • 2,207 views
0 votes
1 answer

update $PATH of guest vm using vagrantfile

You can try the following command: I ...READ MORE

Apr 13, 2018 in DevOps & Agile by shubham
 • 7,340 points • 1,822 views
0 votes
1 answer

Divide count of Table 1 by count of Table 2 on the same time interval

Use a custom SQL to create a ...READ MORE

Apr 12, 2018 in Tableau by QueenBee
 • 1,820 points • 1,898 views
0 votes
1 answer

Dimension in python numpy

Use the .shape to print the dimensions ...READ MORE

Apr 20, 2018 in Python by aayushi
 • 750 points • 1,545 views
+1 vote
1 answer

How is it possible to achieve privacy and confidentiality in smart contracts??

Any contract code written on the blockchain ...READ MORE

Apr 18, 2018 in Blockchain by Shashank
 • 10,400 points
edited Aug 7, 2018 by Omkar • 1,578 views
0 votes
1 answer

Variables in Python

Variables in python work differently than they ...READ MORE

Apr 26, 2018 in Python by Nietzsche's daemon
 • 4,260 points • 1,262 views
+1 vote
1 answer

Cassandra and Hadoop - realtime vs batch

Apache Hadoop, is a big data analytics ...READ MORE

Mar 26, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,546 views
0 votes
1 answer

Hadoop demo Code not working

You can use this command: "hadoop fs ...READ MORE

Apr 21, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 1,504 views
0 votes
1 answer

How do I fix a NullPointerException?

When you declare a reference variable (i.e. ...READ MORE

Apr 13, 2018 in Java by Parth
 • 4,640 points • 1,807 views
0 votes
1 answer

AWS Lambda Provisioning Business Logic

AWS Lambda's main function is to reuse ...READ MORE

Apr 17, 2018 in AWS by Cloud gunner
 • 4,670 points • 1,638 views
0 votes
1 answer

How to use custom FileInputFormat in MapReduce?

You have to override isSplitable method. ...READ MORE

Apr 10, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,944 views
0 votes
1 answer

What approach do I need to take to upload files to Lambda function and API Gateway services?

If you want to upload bigger than ...READ MORE

Apr 17, 2018 in Cloud Computing by brat_1
 • 7,200 points • 1,638 views
0 votes
1 answer

Is it possible to setup private ethereum network for creating applications??

yes, ethereum is an open source platform ...READ MORE

Apr 18, 2018 in Blockchain by Christine
 • 15,750 points • 1,604 views
0 votes
1 answer

Connection failed to Ethereum Ropsten Testnet network.

 It looks like your node isn't syncing ...READ MORE

Mar 27, 2018 in Blockchain by Christine
 • 15,750 points • 2,533 views
0 votes
1 answer

what are "and" and "or" operators in Python?

AND - True if both the operands ...READ MORE

Apr 18, 2018 in Python by Johnathon
 • 9,090 points • 1,617 views
0 votes
1 answer

How do I set SQL user password while deploying the database project using CI/CD pipeline

While you are trying , just try ...READ MORE

Apr 10, 2018 in Jenkins by shubham
 • 7,340 points • 1,928 views
0 votes
1 answer

How to change months for a calendar year

Hey, you can try this & Change ...READ MORE

Apr 20, 2018 in Tableau by QueenBee
 • 1,820 points • 1,483 views
0 votes
1 answer

How to hide a window in the constructor immediately after creation?

You can use QtCore.QTimer class Example(QWidget):     def __init__(self, app):         QWidget.__init__(self)         QTimer.singleShot(0, ...READ MORE

Apr 17, 2018 in Python by anonymous
 • 1,611 views
0 votes
1 answer

How to create a new wallet on a blockchain?

Firstly, you need to have a clear ...READ MORE

Apr 4, 2018 in Blockchain by Christine
 • 15,750 points • 2,166 views
+1 vote
1 answer

How blockchain node behaves upon receiving a new block when previous block wasn't acquired?

A node will ask for block number ...READ MORE

Mar 26, 2018 in Blockchain by Perry
 • 17,100 points • 2,508 views
0 votes
1 answer

Browser supported by Selenium 2.0

Below Will help you: Opera: The OperaDriver supports Opera ...READ MORE

Apr 20, 2018 in Selenium by Vardy
 • 2,360 points • 1,468 views
+1 vote
1 answer

Hyperledger - How can I use transaction certificates to enforce privacy?

The transaction certificates don't actually address privacy ...READ MORE

Apr 17, 2018 in Blockchain by Perry
 • 17,100 points • 1,558 views
0 votes
1 answer

I tried the below code but multiple instances are being created

Remove the driver initialization from @BeforeClass/ returnDriver() ...READ MORE

Mar 30, 2018 in Selenium by DragonLord999
 • 8,450 points • 2,401 views
0 votes
1 answer

How Hadoop replication works?

dfs.replication is by default 3 and you ...READ MORE

Apr 19, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,508 views
0 votes
1 answer

Files for Configuring HDFS in Hadoop 2.2.0?

By default these Hadoop configuration files are ...READ MORE

Apr 15, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,668 views
0 votes
1 answer

AUC for 3-Class prediction in R

Use type='probs' inside predict() function, so that ...READ MORE

Apr 4, 2018 in Data Analytics by Bharani
 • 4,660 points • 2,147 views
+1 vote
1 answer

Do we need metamask extension to make transactions on ether?

Actually, we don't need Metamask. To make ...READ MORE

Apr 8, 2018 in Blockchain by Perry
 • 17,100 points • 1,953 views
+1 vote
1 answer

Where does hyperledger stores stores assets and participants??

There are two places where hyperledger stores ...READ MORE

Apr 18, 2018 in Blockchain by Shashank
 • 10,400 points • 1,511 views
0 votes
1 answer

How to print java array in the simplest way?

String[] arr = new String[] {"John", "Mary", ...READ MORE

Apr 17, 2018 in Java by sophia
 • 1,400 points • 1,579 views
0 votes
1 answer

How to join columns that are non-NA?

You can match on something like X=X ...READ MORE

Apr 18, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,536 views
0 votes
1 answer

How to split or divide the grouped data into multiple graphs?

One of a simple approach is to ...READ MORE

Apr 17, 2018 in Tableau by xyz
 • 1,560 points • 1,580 views
0 votes
1 answer

What do we exactly mean by “Hadoop” – the definition of Hadoop?

The official definition of Apache Hadoop given ...READ MORE

Mar 16, 2018 in Big Data Hadoop by Shubham
 • 2,968 views
+1 vote
1 answer

How can I achieve a functionality where an action is performed after a payment is received?

See this can be achieved in more ...READ MORE

Apr 21, 2018 in Blockchain by Perry
 • 17,100 points • 1,392 views
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