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Here's an important interview question asked mostly in interviews of top companies like TCS, Infosys, Capgemini, Cognizant, JP Morgan, Nomura, etc

var	dynamic
Introduced in C# 3.0	Introduced in C# 4.0
Statically typed – This means the type of variable declared is decided by the compiler at compile time.	Dynamically typed - This means the type of variable declared is decided by the compiler at runtime time.
Need to initialize at the time of declaration. e.g., var str=”I am a string”; Looking at the value assigned to the variable str, the compiler will treat the variable str as string.	No need to initialize at the time of declaration. e.g., dynamic str;  str=”I am a string”; //Works fine and compiles str=2; //Works fine and compiles
Errors are caught at compile time. Since the compiler knows about the type and the methods and properties of the type at the compile time itself	Errors are caught at runtime  Since the compiler comes to about the type and the methods and properties of the type at the run time.
Visual Studio shows intellisense since the type of variable assigned is known to compiler.	Intellisense is not available since the type and its related methods and properties can be known at run time only
e.g., var obj1; will  throw a compile error since the variable is not initialized. The compiler needs that this variable should be initialized so that it can infer a type from the value.	e.g., dynamic obj1;  will compile;
e.g. var obj1=1; will compile  var obj1=” I am a string”; will throw error since the compiler has already decided that the type of obj1 is System.Int32 when the value 1 was assigned to it. Now assigning a string value to it violates the type safety.	e.g. dynamic obj1=1; will compile and run  dynamic obj1=” I am a string”;  will compile and run since the compiler creates the type for obj1 as System.Int32 and then recreates the type as string when the value “I am a string” was assigned to it. This code will work fine.

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Travel Without Printout of E-Tickets - Travel with Electronic Tickets


Good News for all train passengers 





Carry your tickets in electronic mode on
-Laptop
-Mobile
-IpadEnvironment Friendly


Must carry a valid ID


Save Paper


We can almost save 3 lakh A4 size paper every day.


This is a great initiative by the Indian Railways to allow the passengers to not carry the e-ticket & simply take a screen-shot of the e-ticket & display it through laptops/palmtops/ Mobile phone which will be referred as Virtual Reservation Message (VRM).

As we all know about the Electronic Reservation Slip (ERS) - The printout in standard specified Performa containing reservation particulars, and instructions for use which can be used by the passenger along with the relevant authorizedIdentification, as travel authority for performing the journey.

 So from onwards if you are traveling by train, then ERS/VRM along with any one of the eight prescribed ID proofs in original and the indication of the passenger(s)' name(s) in the Reservation Chart will authorize the passenger to travel.

VRM combined with valid photo-id in original will be treated as an instrument on par with the ERS.
ERS/VRM along with one of the eight prescribed proofs of identity in original will also authorize the passenger to enter the platform on the day of journey and he/she will not be required to purchase platform ticket. ERS/VRM along with original id proof will be required to be produced on demand of Ticket Checking Staff on the platform.

Hope this information will be helpful.


Reference - https://www.irctc.co.in

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