Ravi Shankar – Page 4 – Tweaking Apps

How to rename multiple files on a Mac

February 14, 2019 By Ravi Shankar Leave a Comment

Let us say you are scanning documents using a printer connected to a Mac. And when scanning multiple pages of the same document, the pages gets scanned with the default name followed by a ordered number.

As shown in the above screenshot, the filename starts with Screenshot and prefixed with some numbers.

Rename all files at once

All these files can be renamed all at once using below mentioned steps.

Select all files and right click the selected items.
Select Rename n items options from the listed menus.
Provide a name in the Custom Format field. Let us name this as PropertyDocument.
Enter the start number for the pages then click Rename button.

Now all the files will appear with name as PropertyDocument followed by a number.

Journey with Swift

October 29, 2017 By Ravi Shankar

This is about my journey as a Swift developer and some of the points discussed here could be useful to anyone who want to re-invent themselves as a software developer or if they want start a career as a Software developer.

Past experience

I have been working in Software industry for years in wide range of technologies. Like many I felt the need for a change and wanted to switch over to the latest technologies. I was interested in iOS app development though I started with Objective-C within a year switched to Swift.

Be an early adopter

Choosing the technology matters and if you are one of the early adopter then you get new opportunities quickly. Being one of the early adapter of Swift helped me a lot to get noticed quickly. Also if the technology has the backing of some big corporates then you will grow with the technology.

Blog a learning tool

I started writing simple tutorials in Swift and shared this with the wider audience through my blog. This helped me to articulate the concepts well and also get valuable feedback from readers. In the later stage I got many opportunities/leads through my blog. Check out Ash Furrow and Kristina Thai talks on the benefiting of writing a blog.

Stay focussed

After picking up iOS/Swift, I got distracted time and again with Android and other hybrid platforms. But remember the process of learning any technology is the same and you are not going to achieve your goal by focussing on different platforms at the same time. Stay focussed to reach your goal quickly.

Build a portfolio

Another way of building confidence is to publish apps under your name. You can start with simple apps and increase the features as you gain more and more experience. I sometimes felt embarrased with the choice of initial apps that I made and the code that I wrote. It is quite natural to feel that way as long you keep learning continuously

Eat Swift, Sleep Swift, Breathe Swift

~~Don’t~~ put all your eggs in one basket. I was working as a Objective-C developer but quit the job to focus only on Swift. There were not many gigs available during the first year hence become an iOS mentor. The best way to keep learning is by teaching others. This allowed me to spend all my time in learning and practising Swift.

Networking and team events

Join local meet-ups learn from other like minded people. If possible attend conferences where you get a chance to meet some international speakers as well. Participate in Hackathons and test your ability in new technologies by conceptualising the app idea in to MVP in the short period of time.

Take up new opportunities

I got a lead through my blog for reviewing a Swift book and also to co-author a Udemy course. Don’t hesitate to take up new opportunities as long as it aligns with your technology. This can alway add up to your portfolio and online presence.

Hard work, dedication!

After many unsuccessful bidding finally I got a small prototype work in Swift. The client again awarded me a full fledged project which later become a full-time work. Even if it is a small gig, hard work and dedication definitely pays off.

I want to end with one quote this is especially for the people in their 30s & 40s. You can become or re-invent yourself as software developer at any age. “Age is no barrier. It’s a limitation you put on your mind”. Don’t compare yourself with other developers know your strength and work around your limitations. Happy Coding!!

My first iOS developer conference – try! Swift Tokyo 2017

October 28, 2017 By Ravi Shankar 2 Comments

Attending conference is one way of keeping yourself up to date with the latest trends in any industry. This is true for every software developer as well. After re-skilling myself and picking up iOS development I wanted to attend some good conferences but not many were happening in India. Heard a lot about try! Swift from Alvin and Giridharan and registered for try! Swift Tokyo.

Conference

I needed a visa to travel to Japan and the organisers were quick to help me out. Thanks to Katsumi and Natasha for the paper work, the level of commitment shown to sort this out gave me a glimpse of what to expect in the conference.

I had arrived a day earlier and was able to attend the Tokyo Skytree tour followed by a reception at Pivotal labs arranged for all the international attendees. This was like an ice breaker and I got introduced to few of the attendees and speakers as well.

The conference was for 2 days + 1 day for workshops and hackathon. Each session was scheduled for 25 minutes followed by office hours with the speaker where you get a chance to clarify your queries and have detailed discussion with some renowned speakers. They had also scheduled lighning talks with duration of 5 minutes each. This was a huge conference with 700+ attendess, great speakers and well organised one as well.

Hackathon and Workshop

After the 2 day conference all the attendees had a chance to participate in hackathon. This gave me a chance to work with some bright Japanese developers. There were also some workshops conducted by Realm, IBM, Build a cross-platform 2D game with Swift by @ewingfighter and React Native workshop by orta

Why should anyone attend?

Networking with attendees and speakers, use the office hours after talk to clarify the queries with the speakers.
You can participate in the social events after conference. trySwift are the best at this.
If you are interested in job opportunities then you have chance to meet companies as many sponsors were doing recruitment as well
Get up to speed in new iOS technologies and chance to know about some exciting startups.
You can also participate in the local Swift and iOS community events.
On a side note you have a chance to explore country and interact with people.

It was worth the money spent and would recommend this for all iOS developer especailly try! Swift conferences.

Now try! Swift has come to India as well !! Register Now

How to link Aadhaar with PAN

June 12, 2017 By Ravi Shankar Leave a Comment

Central Board of Direct Taxes, Government of India has made Aadhaar mandatory for filing returns. Income Tax India website is now providing option to link your Aadhaar card with your PAN card. These are following ways one can link Aadhaar with their PAN card.

Open https://incometaxindiaefiling.gov.in/ in a web browser and you should see the following option to link your Aadhaar card with PAN

You can also directly access the linking page by following this URL – https://incometaxindiaefiling.gov.in/e-Filing/Services/LinkAadhaarHome.html. This should display the following page asking for details about your PAN and Aadhaar.

After entering the details, click Link Aadhaar option. If your Aadhaar and PAN card name matches then the linking will be successful otherwise you will be asked to correct name details in either PAN or Aadhaar. For example in the Aadhar card if the name was entered as “S Ravishankar” and in PAN if it was “S Ravi Shankar” then you will have to update your name in PAN or Aadhaar.

Another way to access the Aadhaar, Pan linking page is by login to IncomeTaxFilling website. After login to the website, click Profile Settings and select Link Aadhaar from menu list.

This should display a page asking for details about your Aadhaar number and name given in your Aadhaar card. After entering the required details click Link Aadhaar to complete associating your PAN with Aadhaar.

Moto G5 Plus – How to use OTG (USB On The Go)

May 2, 2017 By Ravi Shankar Leave a Comment

Moto G5 Plus comes with a OTG support, where you can copy the files from your pen drive (and vice versa) by connecting it to your phone via the OTG cable. There are lot of OTG cable available in the market based on the brands. Some of the pen drive nowadays comes with the OTG support where you can attach the pen drive directly to the phone.

Here are few steps on how to use the feature. Once you plug in your pen drive via the OTG cable you get the notification on your phone. You can either explore or eject the device which is connected.

Click on Explore, where it shows the contents of the pen drive. Try copy some files from your phone and then tap the menu icon from the top left corner and select the pen drive and move it. The same can be done by copying the files from the pen drive to your phone as well. Once you are done with the copying from the notification area, tap Eject to remove the pen drive safely.

Assertions supported in XCTest

March 23, 2017 By Ravi Shankar Leave a Comment

Here you can find the list of Assertions supported by XCTest and it is essential to know all these assertion if you are practicing Test Driven Development in IOS. You can get this list from XCTestAssertions.h

XCTFail(<#format…#>) – This unconditionally fails the test.
XCTAssertNil(<#a1#>, <#format…#>) – Failure message when object is not nil.
XCTAssertNotNil(<#a1#>, <#format…#>) – Failure message when object is nil
XCTAssertEqual(<#a1#>, <#a2#>, <#format…#>) – Failure message when expressions(a1 & a2) are not equal.
XCTAssertNotEqual(<#a1#>, <#a2#>, <#format…#>) – Failure message when expressions(a1 & a2) are equal.
XCTAssertEqualObjects(<#a1#>, <#a2#>, <#format…#>) – Failure message when objects(a1 & a2) are not equal.
XCTAssertNotEqualObjects(<#a1#>, <#a2#>, <#format…#>) – Failure message when objects(a1 & a2) are not equal.
XCTAssertEqualWithAccuracy(<#a1#>, <#a2#>, <#accuracy#>, <#format…#>) – Failure message when a1 is not equal to a2 with + or – accuracy.
XCTAssertNotEqualWithAccuracy(<#a1#>, <#a2#>, <#accuracy#>, <#format…#>) – Failure message when a1 is equal to a2 with + or – accuracy.
XCTAssertNoThrow(<#expression#>, <#format…#>) – Failure message when expression does throw exception.
XCTAssertNoThrowSpecific(<#expression#>, <#specificException#>, <#format…#>) – Failure message when expression throws specific exception.
XCTAssertNoThrowSpecificNamed(<#expression#>, <#specificException#>, <#exception_name#>, <#format…#>) – Failure message when expression throws specific class with specific name.
XCTAssertThrows(<#expression#>, <#format…#>) – Failure message when expression does not throw exception.
XCTAssertThrowsSpecific(<#expression#>, <#specificException#>, <#format…#>) – Failure message when expression does not throw specific exception.
XCTAssert(<#expression#>, <#format…#>) – Failure message when expression is false.
XCTAssertTrue(<#expression#>, <#format…#>) – Failure message when expression is false.
XCTAssertFailure(<#expression#>, <#format…#>) – Failure message when expression is true.

Turn off excessive logging in Xcode 8

September 25, 2016 By Ravi Shankar 2 Comments

Xcode 8 shows lots of logging message in the console window when you run the app. If you have any print statement in your app module then it can easily get lost in these warning messages.

One of the solution to avoid this excessive logging is to add a property under enviromental variable section. Navigate to Product menu and select Scheme from the menu list then Edit Scheme (Product -> Scheme -> Edit Scheme )

In the Scheme screen, select Run option. Navigate to Environment Variables section and add new variable OS_ACTIVITY_MODE with value as disable

This shoud prevent these warning/logging messages in Console window. This property has to be configured for each project in Xcode, what would be nice to have is a single configuration in Xcode for all projects 🙂

How to increase number of worksheets Excel

March 18, 2016 By Ravi Shankar Leave a Comment

Microsoft Excel by default contains 3 worksheets while creating a new Workbook. For creating a new workbook you can specify the number of Worksheet that a Workbook needs to contain. This can be modified using Excel Options. Listed below are steps for increasing number of Worksheets for a new Workbook in Excel 2013, Excel 2010 and Excel 2007

In Excel 2013 and Excel 2010 –> Click on File menu and then Options.

In Excel 2007 –> Click on Excel Options and then Popular menu.

Under When creating new workbooks section there is include this many sheets fields. This can be used for increasing the number worksheets while creating a new workbook. The minimum value is 1 and the maximum is 255. Check out the below video demo to increase worksheets size in Excel 2013

Also See: How to move or copy worksheets in Excel 2013

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