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Hein Pauwelyn wrote: I'm making a document for school and the title is "What is the future of VR?"
...
What do you think?
I think you should change the title to:
What is the future of virtual reality (VR)?
From then on you can refer to it as simply VR.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles
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Future or VR is huge , for students tell them by using VR they dont need move to any place to attend diff lectures . They will wear the VR device and feel like they are sitting in a class room , listening to lectures , answering questions , asking questions .
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Hi everyone,
I'm looking for how can I sheets. I've seen there are a solution named OMR.forms.answerSheetDesigner but I haven't got it.
Anyone has an exe?
Regards
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Are you asking if someone has a paid for application[^] that you can have without paying for? We don't allow piracy on these forums.
This space for rent
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No, I thought it was open source, that's free.
Sorrt, I ' m not a piracy.
If the sw has a cost I must test it and if it is good for our needs I will pay it. I haven't seen the pay page.
Could you send me the page?
Maybe I have not explain right.
Best
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I linked to this in my previous answer, which has an enquiry form at the bottom.
This space for rent
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Sorry, now I'm looking in my mobile and I can't see the message right.
I'll see tomorrow and I' ll send any question.
I apologize for any inconvenience.
Best
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I can't do a test to see if it's a good sw to our needs.
I can't see the price
I 've seen the link. There are six videos. None is about how to do forms. I haven't got to see the way to do sheets.
I need an API or sw working in command line. I scan several documents via network scanner. This docs are the input to the API. The output must be a txt or excel file providing me the results.
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You will have to place an enquiry with them - there's a section at the bottom that deals with this.
This space for rent
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Thanks, I did itlast day. I'll wait answer.
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Hello,
I want to ask how Facebook database works like? For example if I consider only the FB posts that users put on this timeline, how that post table would work?
Some statistics.
1. There would be more than 1 million posts every second.
2. Other users may be commenting on that posts too.
Questions.
1. Is there only 1 post table or multiple posts table that contains user post based on their geographic location. This may help in reducing the load from a single post table.
2. Is Fb database has some different approach then the databases of normal (low traffic) website?
3. Every database whether Oracle or SQL server has a limit in terms of number of concurrent connection, no of inserts queries performing per second and so on. So how FB is doing this?
Hope my questions make sense. Anyone who might be in FB database team might help me in my questions?
thanks
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This is a very good topic for discussion; however, I would suggest you post it under the Database forum instead of the Uncategorized posts. Database Discussion Boards[^]
There are two kinds of people in the world: those who can extrapolate from incomplete data.
There are only 10 types of people in the world, those who understand binary and those who don't.
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Hi all, I am new in the forum. I don't know if this is the right place to say hi. If not forgive me.
I am from Spain and I like the forum, lots of topics and very useful.
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Well hello there, for anything technical, like programming questions you can ask them using a post here in forums, for anything chit chat, consider Lounge, where you can have a chat with fellow members.
The sh*t I complain about
It's like there ain't a cloud in the sky and it's raining out - Eminem
~! Firewall !~
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Welcome!   Hope you enjoy your stay. Only been here a short time but it's a great place to learn and talk with other developers.
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Can anyone help me with the Ecdh openssl command prompt code for generating shared secret. I have used this, but i got error message
openssl pkeyutl -derive -inkey musicpriv.pem -peerkey pubeckey.pem -out sharedsecret.bin | openssl dgst -sha256
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When having such problems it is always helpful to show the error message.
First step is reading the manual page for the commands and understand what they are doing:
pkeyutl(1): public key algorithm utility - Linux man page[^]
dgst(1): message digests - Linux man page[^].
You can read them also at a shell prompt by entering man pkeyutl resp. man dgst.
You should also know about shell commands (piping in your case). The pipe operator | sends the standard output of the first command to the standard input of the second. So a first check might be executing the first command only to see if the error occurs there.
You are writing the result of the first command to a file (option -out sharedsecret.bin). So the output on screen are just error or success messages. Passing these to another program using the pipe operator makes usually no sense.
So a possible solution might be omitting the output to file for the first command (untested):
openssl pkeyutl -derive -inkey musicpriv.pem -peerkey pubeckey.pem | openssl dgst -sha256
Another solution might be using the created file as input for the second command:
openssl pkeyutl -derive -inkey musicpriv.pem -peerkey pubeckey.pem -out sharedsecret.bin && openssl dgst -sha256 sharedsecret.bin
Note the usage of the && operator here. It is a shell command concatenation where the second command is only executed when the first was successful.
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Hi Jochen for the response, I use windows (not linux) and I have read through the manual page on "www.openssl.org" but i dont quite understand the basic uses of the "pkeyutl command"
This was command line used and the error message I got when I used it
openssl pkeyutl -derive -inkey musicpriv.pem -peerkey pubeckey.pem -out sharedsecret.bin | openssl dgst -sha256
Error Message = openssl:Error: 'pkeyutl' is an invalid command.
NB: Though an hash value was generated, but not as specified.
Thank you again for your great help.
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What I have said about piping and command concatenation applies also to the Windows command interpreter. So you should follow my advice about using piping or files, but not mixing them.
However, your actual problem is not related to that but occurs before.
It looks like your openssl.exe does not support the pkeyutl command.
To check this you can list the available commands:
openssl list-standard-commands
All I can suggest is to check your Windows OpenSSL installation and try to ask where you got it from.
BTW: There is no -peerkey option for the pkeyutl command (OpenSSL 1.0.1f on Ubuntu 14.04):
joe@raspi-cross:~$ openssl pkeyutl -help
Usage: pkeyutl [options]
-in file input file
-out file output file
-sigfile file signature file (verify operation only)
-inkey file input key
-keyform arg private key format - default PEM
-pubin input is a public key
-certin input is a certificate carrying a public key
-pkeyopt X:Y public key options
-sign sign with private key
-verify verify with public key
-verifyrecover verify with public key, recover original data
-encrypt encrypt with public key
-decrypt decrypt with private key
-derive derive shared secret
-hexdump hex dump output
-engine e use engine e, possibly a hardware device.
-passin arg pass phrase source
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how to create data base asp.net
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That is a perfect search machine query. Just enter it at a search page of your choice.
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Cool thank you! 
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