it is written in every book that foreign keys are actually primary key in some other table but can we have a foreign key which is not primary key in any other table
Why is CompareAndSwap instruction considered expensive?
I read in a book:
"Memory barriers are expensive, about as
expensive as an atomic compareAndSet()
instruction."
Thanks!
Hello.
I came across a program with 10 header and 10 source files. I read in my text book that the functions are called from main. But how can I pass data to so many functions from main()?
I am reading the Head First PHP/Mysql book and they say to store both the user's username, email into cookies and sessions. Is it safe to assume that everyone know a day has cookies? Or should I store both in sessions and cookies?
I am not storing any sensitive data in cookies such as password, etc.
I am reading a book which says (if I am not getting it wrong) wrapping some code with @autoreleasepool statement enables the ARC. First of all is this the case ?
My second concern is when I am doing some iOS example programs, although I enable ARC when creating a new project, I never see this directive being used anywhere (in the automatically generated code). Does this mean that ARC is not being used ? Any ideas/pointers is appreciated.
I have a practical exam in web technologies so html, css, javascript and (possibly) php. I'm still learning and just wondered if you guys had any advice. HTML im fine with, css sometimes takes me time to get right and javascript and php get a bit messy! It's open book, so what would you suggest taking with me?
I am interested in learning more about signing files and removing signatures from files, programatically using C#, can anyone recommend a book or website covering this topic.
Hi ,
I am new in the field of ANdroid.
I am using FBReaderj code for my project.
I want to download a book from my website.
In FBREADERJ they have integrated with three site.
I want to add my own.
Any ideas ??
Please Help..
Thanks in Advance
Following sample is taken from "Dive into python" book.
class MP3FileInfo(FileInfo):
"store ID3v1.0 MP3 tags"
tagDataMap = ...
This sample shows documenting the MP3FileInfo, but how can I add help to MP3FileInfo. tagDataMap
I need to learn how to develop PHP extensions.
So, I assume I have to refresh my CPP skills (or is it C?).
What IDE should I use (auto-completion, object browsers etc). I plan to develop on Ubuntu 32.
Is there a good book or good website I can learn from?
Hi there,
I need to make a program that writes some data to an excel spreadsheet. Something basic along the lines of First name, last name, phone number, e-mail per row with each category in its own column.
I don't even know where to start. If someone could tell me which assemblies to reference and maybe point me to a website or a book that covers writing/reading data from an excel spreadsheet via a c# program that would be great.
Many thanks.
Hi! I'm a newbie developer of iPhone.
Right now I'm working on an app that has the functionality of opening a pdf, and showing a specific page and letting the user to navigate through it. Like a book reader.
But now I need to access the table of contents to make a mini menu with it. How do you access that table of contents?
I am looking for suggestions for a very simple book borrowing system for our office library. For example, should we use an Excel spreadsheet, some email based system, build something ourselves, or is there a web application for this? It just needs to record the title and name of the borrower at a minimum.
I know Java and C++ but am looking to get in to XML. I don't want to waste time reading over the basics of programming in a book, so has anyone any recommendations for resources for learning XML that assume a knowledge of programming already, or even better highlight how to switch from Java/C++ to XML ie. main differences etcs.
Can anyone provide me with link to a website/book in which would be well explainded how to use profiler in VS2010 for native code? I tried to search the web but all I'm getting is tutorials from Microsoft and those tutorials use C#.
Thank you.
Hi,
I've realised just how rusty my knowledge of PHP 5 and advanced PHP programming is after completing some questions for a test.
I seriously need to read a book or something.
Any recommendations for PHP 5 books?
I'd like to learn PHP specifically for dealing with security vulnerabilities/exploits.
Could someone recommend a book?
I don't know if I need to learn HTML/CSS/XML/XHTML etc, do I have to learn those too? I don't really plan on designing websites, could anyone help me with this? :P
hi
i search for cours video or book or web tutorials to teach me how to build website
with php mysql css html
i need full project from A to Z
from the scratch
plz if any one know that tell me
Hello
Can anybody suggest some good resource/book on Database high availability techniques?
Moreover, High-availability of system software like Intrusion Prevention system or Web servers.
I am considering high-availability is global term which covers clustring, cloud computing, replication, replica management, distributed synchronization for cluster.
Thanks in advance!
I'm new to rails and was trying out the scaffold command - the following scaffold runs and works when I view it via web brick
script/generate book title:string
the following fails - gives me a weird route error
script/generate application name:string
the following works
script/generate app name:string
can anyone shed some light on this? Is 'application' a reserved word?
In examples of groovy code I find the -> operator everywhere, but the groovy tutorials nor the book I have seem to provide any explaination as to what this means.
Are they stored in the heap or there is separate area where they are stored?
Similarly where are static variables stored in memory. They can't be stored in frames as they will get destroyed when the function returns.
PS - Can someone suggest a good book that talks about memory mapping for C/C++.
hi, first of all this is not homework!!
my question is from book: Algorithms in C++ third edition by robert sedgewick
question is: there is given array of size n by 2^n(two dimensional) and we should fill it by binary numbers with bits size exactly n or
for example n=5 so result will be
00001
00010
00011
00100
00101
00110
00111
and so on we should put this sequence of bits into arrays please help me
I have sql query statement which used to display the contents in the table.The sql statement consist of a where clause which is to be appended with numeric value as 1 ,2 3 etc depends upon the previously selected content.I am having the numeric value as int and i want it to append to sql statement which is const char.how can i append both the values.Please help me out.
My query is == select * from Book where id=1;
i have the id value is integer
Thanks.