GUYS I need to know abt the book which is best book for a professional to improve his concept
it must be objective
if sm1 have plz send it to [email protected]
Hi when i started to work on Task queue concept i got struck on this line
queue.add(
DatastoreServiceFactory.getDatastoreService().getCurrentTransaction(),
TaskOptions().url("/path/to/my/worker"));
What will DatastoreServiceFactory do... How to redirect this page to another servlet.... in the url i gave
.url("/myservlet") but it doesn't redirected to servlet Please say what should given in .url.Help me.
Regards,
sharun
I understand the basic concept of stack and heap but great if any1 can solve following confusions:
Is there a single stack for entire application process or for each thread starting in a project a new stack is created?
Is there a single Heap for entire application process or for each thread starting in a project a new stack is created?
If Stack are created for each thread, then how process manage sequential flow of threads (and hence stacks)
For example,
I want my Class1 to have a friend Class2, so that ONLY Class1 itself and its friend Class2 can set a some certain property in Class1? This concept exists in C++, but I don't know how to do it in C#.
Thank you guys
Just seeking confirmation here : apache Thrift protocol does not seem to support running multiple services on one transport endpoint ? ( a socket, file, whatever )
I cant seem to figure out how to do something like this in Thrift:
service otherService {
void dosomething()
}
service rootService {
otherService getOtherService()
}
There does not seem to be any concept of passing in and out service handles, ultimately limited by the protocol. Looks like you can not run two services on one transport pipe. Correct ?
RDBMS are based on Relational Algebra as well as Codd's Model. Do we have something similar to that for Programming languages or OOP?
One concept may be Turing Machine.
Hi,
I am confused, wanted to confirm the below statement -
We can create multiple event handle method for the same event?
I think yes, beacuse it is overloading concept? right?
Please correct my understanding or advise.
Thanks.
I'm trying to explore Behavior Driven Design and Domain Driven Design. I'm getting that written specifications drive the tests in BDD, but also that business logic can be encapsulated using the specification pattern for re-use in domain objects and repositories, etc.
Are these basically the same concept just used in different ways, used in conjunction together, or am I completely confusing the concepts?
Please shed some light, if possible.
In the post screen, I want to remove the option of multi-authors being able to 'free tag' their posts. In other words, only allow tags that have been preset in the admin tags section.(these tags are of course visible in the tag cloud in posts screen) The concept is to prevent authors introducing random tags in their posts, leading to duplication and confusion.
I'm trying to grasp the concept of a Batcher Sort. However, most resources I've found online focus on proof entirely or on low-level pseudocode. Before I look at proofs, I'd like to understand how Batcher Sort works. Can someone give a high level overview of how Batcher Sort works(particularly the merge) without overly verbose pseudocode(I want to get the idea behind the Batcher Sort, not implement it)? Thanks!
I'm just getting started in F# and have a basic question.
Here's the code:
let rec forLoop body times =
if times <= 0 then
()
else
body()
forLoop body (times -1)
I don't get the concept of how when you define a variable it is a value and immutable. Here, the value is changing in order to loop. How is that different from a variable in C#?
Hi,
Is it possible to use Python's doctest concept for classes, not just functions?
If so, where shall I put the doctests - at the class' docstring, or at the constructor's docstring?
To clarify, I'm looking for something like:
class Test:
"""
>>> a=Test(5)
>>> a.multiply_by_2()
10
"""
def __init__(self, number):
self._number=number
def multiply_by_2(self):
return self._number*2
Thanks in advance,
Adam
hi!
I wonder why Informatica's joiner transformation doesn't support !=, =, <= operators??
why should they come up with a concept like lookup??
Thanks for your suggestions.
This latest Herb Sutter trip report on the C++0x standardisation process indicates that the committee has decided to completely drop the "export" concept for templates, and to deprecate exception specifications.
I think these are both good moves, but I'm interested if anyone out there has a code base where these changes will cause them sleepless nights?
I understand the concept of factory pattern such that you give it something it spits out something of the same template back so if I gave a factory class apple, I expect to get many apples back with out having to instantiate a new apple ever time.
what if that apple has a required argument of seed, or multiple required arguments of seed, step and leaf? how do you use factory pattern here?
that is how do I use factory pattern to instantiate this:
$apple = new Apple($seed, $stem, $leaf);
Hi,
In blackberry, we use a timeout to get the location, so that if it doesnt retun location in that much time period, we get to know. But in Android, there is no concept of timeout, can anyone please tell the alternative, that we can find out that after this much time there is no location update from GPS.
Thanks
We are working with a PHP application which has no concept of switch-able themes; the situation is that we are modifying the application to add our own features, and CSS/Smarty templates for our own look and feel.
We have 2 projects base on this application, each with a different layout/presentation. Hence I need to have one repo for the base application files, and one for the CSS/smarty templates. How should I go about doing this?
I see the word thrown around often, and I may have used it myself in code and libraries over time, but I never really got it. In most write-ups I came across, they just went on expecting you to figure it out.
What is a Class Factory? Can someone explain the concept?
Hi everyone I am not clear with SQL reporting services can someone pls give me breef explanation or post some tutorial with examples and concept explanations. ]
Thanks a lot.
From a recent SO question I realized I probably had a wrong concept of the meaning of hashable and immutable objects in python.
What hashable means in practice?,
What the relation between hashable and immmutable is?
There are mutable objects that are hashable? And immutable not hashable?
Hello,
I'm the only one among my people who navigate in .NET water, the rest is in the Java world. So, I'd like to have some common points to talk with them. What are the equivalent concepts in Java for: (by concept, I mean the purpose of such technology)
Visual Studio
IIS
Linq
Development server that ships with VS (I don't know the name)
NHibernate, Subsonic, ...
ASP.NET WebForm (Is there any equivalent in Java with drag and drop)
ASP.NET MVC
etc.(Please, add some other concepts if they are important to know)
Thanks for helping
I had done Edge detection using wavelet transform using thus steps
changing the image to Gray scale
decomposing the image using dwt2(discrete wavelet transform,Haar wavelet filter ) in to horizontal,vertical,diagonal and approximation(detail)
further decomposing the horizontal part
threshold (global threshold like canny Edge detection )
i got the edge but i got a problem while locating the edge to complete image to mean recovering original image using only the Edges so i need help concerning this either in concept ,mat lab code or references
I hope i will get your help soon
I'm unable to find the .NET FCL built-in concept of precedence to leverage while constructing Expression Trees. Ref System.Linq.Expressions Namespace. Is this something that must be handled manually in code, or is it somehow implicit and I'm not recognizing it? Maybe through helper methods or classes?
I want to apply it to math operations to ensure 3 + 5 * 10 results in 53 instead of 80.
We all know that in C# we can't cast bool to int. I wanted to see what is the binary representation of true with bitmask, but I can't use (bool & int).. I think the problem is the architecture desicion "true is true, not any number != 0" (C++) and I was wondering what the benefits of such an architecture are? What is so bad with the C true/false concept?
Basically I want to setup a replication server for mysql datbase. I am completely new to this concept and appreciate any help pointing me in the right direction.
If at all the slave goes down, will it effect the master in anyway?
Thanks.