I read a book that uses infix, infixr, and infixl in the sample programs. I'm wondering what the differences are. I'm guessing that infixr performs operation from right to left, and vice versa.
Hello,
For instance if I do something like:
Criteria c = session.createCriteria(Book.class)
.add(Expression.ge("release",reDate);
.add(Expression.ge("price",price);
.addOrder( Order.asc("date") )
.setFirstResult(0)
.setMaxResults(10);
c.list();
How can I use the same criteria instance, but remove (for example) the second criterion?
I'm trying to build a dynamic query in which I'd like to let the user remove a filter, without the backend having to reconstruct the criteria from scratch.
Thank you
I am a long-time Mac user looking to gain a decent understanding of Windows. I'm not really interested in the history except as it is still relevant to Windows 7.
I'm competent with the Mac and UNIX/Linux environment. I'm live in C, Objective-C, Bash, Python, JavaScript, AppleScript and PHP. As such I want something that is introductory but not aimed at beginners.
Can anyone recommend a decent book (or other resource) to get me started?
TIA
I am working on an example from a php book and am getting an error on line 8 with this code
<?php
$agent = getenv("HTTP_USER_AGENT");
if (preg_match("/MSIE/i", "$agent"));
{
$result = "You are using Microsoft Internet Explorer";
}
else if (preg_match("/Mozilla/i", "$agent"));
{
$result = "You are using Mozilla firefox";
}
else {$result = "you are using $agent"; }
echo $result;
?>
Hi,
As part of the college mini-project, I am developing a micro-blogging platform for Android. I am planning to use Django framework in python to handle the communication between Android and remote server so as to make database API independent. I heard its best practice to use HTTP methods for the communication. Which is the best site/book to learn using HTTP methods for Android? I
Possible Duplicate:
What’s the best way to teach young kids some basic programming concepts?
The kid hasn't ever programmed, in or out of school.
Any recommendations on a book or two that explains at a very basic level what programming is and how to start to think?
I have read around 4-5 books on design patterns, but still I dont feel I have come closer to intermediate level in design patterns?
How should I go studying design patterns?
Is there any best book for design pattern?
I know this will come only with experience but there must be some way to master these?
I'm interested in getting involved/up to speed on VistA, the Veterans' Administrations open source medical records system. To that effect, I understand I should learn the MUMPS (M) language upon which the software is based. Does anyone have any getting started tips or book recommendations on this language and environment? Any tips on getting up to speed on VistA is appreciated as well. Audience: experienced developer/consultant.
Thanx in adv.
Here is example from J. Richter book "CLR via C#":
Nullable<Int32> y = null;
How exactly this works? Nullable is a struct, and I can not figure out is this compiler special support or implicit boxing of null value or something else.
Do you know any useful resource, book, article, webpage about data structures?
I found very useful wikibooks page:
http://en.wikibooks.org/wiki/Data_Structures
What helps you with data structure design?
Answers to a recent post (Any chances to imitate times() Ruby method in C#?) use the = operator in the usage examples. What does this operator do? I can't locate it in my C# book, and it is hard to search for symbols like this online. (I couldn't find it.)
It's clear how to create a URLPattern which dispatches from a URL regex:
(r'^books/$', books),
where books can further dispatch on request method:
def books(request):
if request.method == 'POST':
...
else
...
I'd like to know if there is an idiomatic way to include the request method inside the URLPattern, keeping all dispatch/route information in a single location, such as:
(r'^books/$', GET, retrieve-book),
(r'^books/$', POST, update-books),
(r'^books/$', PUT, create-books),
I am learning Objective-C using Stephen Kochan's excellent book "Programming in Objective-C 2.0". I am new also to Xcode. So far all my exercises have worked fine, but when I run program 7.6 FractionTest on page 153 I get the console message "Program received signal: "EXC_ARITHMETIC". The status shows that the program succeeded, but I don't see any output. Can anybody suggest what I might be doing wrong?
In his book programming in scala (Chapter 5 Section 5.9 Pg 93)
Odersky mentioned this expression "bills !*&^%~ code!
In the footnote on same page:
"By now you should be able to figure out that given this code,the Scala compiler would
invoke (bills.!*&^%~(code)).!()."
That's a bit to cryptic for me, could someone explain what's going on here?
Running through an iPhone SDK book and one of the examples has me creating a table and then later adding a UISegmentedControl to the table for sorting.
I dutifully did this in IB, and it looks great:
When I run it in the simulator or my phone, it's totally squished:
The buttons work perfectly, it's just they are not sizing according to their content. Any ideas what's going wrong?
Here's the attributes I have set:
If you had the opportunity to take one computer science course now, and as a result significantly increase your knowledge in a subject area, what would it be? Undergraduate or graduate level.
Compilers? Distributed algorithms? Concurrency theory? Advanced operating systems?
Let me know why.
(Note that I appreciate this isn't a far fetched scenario - but time and inertia might be preventing people from taking the course or reading the book or whatever)
I'm reading Bob Martin's principles of OOD, specifically the SRP text, and I understand the spirit of what it's saying pretty well, but I don't quite understand a particular phrasing, from page 2 of the link (page 150 of the book):
I paraphrase:
It is important to separate these two responsibilities into separate classes because each responsibility is an axis of change.
What exactly is meant here by "axis of change"?
I would like to ask if there is a way to include the total number of rows, as an additional column, in the returned result sets from a TSQL query using also the Row_Number (SQL 2005) command.
For example, getting the results set from a query against Book table in a form similar to this:
RowNum BookId BookTitle TotalRows
--------------------------------------------
1 1056 Title1 5
2 1467 Title2 5
3 121 Title3 5
4 1789 Title4 5
5 789 Title5 5
\documentclass{book}
\usepackage{amsmath}
\usepackage[german]{babel}
\usepackage{amssymb}
\usepackage{amsxtra}
\usepackage[dvips]{epsfig,psfrag}
\usepackage{listings}
....
this is how my file starts. I didn't even edit it, I received it like this. However, if I want to make a pdf, it gives me the undefined control sequence error at the first line... What is wrong??
I know how to write program in PHP and implementation of MVC model. but I really want to practice coding like the coding in real world??? I was wondering is there any specific example or book which can show me the tricks or logic and the way professional programmers consider about coding???
hello.
I would like to read about history of computing, is there some particular book you recommend about:
programming languages and their evolution
history of supercomputing and supercomputers
Thank you
A book beginning linux programming 3ed says "Note that fread and fwrite are not recommended for use with structured data.Part of the problem is that files written with fwrite are potentially nonportable between different machines." What does that mean exactly? what calls should I use if I want to write a portable structured data reader or writer? direct system calls?
I guess my previous question was ambiguous. I am looking for High Availability architecture for system application like Database in particular.
I know this is not perfect place to ask this question.
Can anybody suggest some good resource or book on High-Availability?
I want to learn as much as I can on high-availability before I start building my system.
Thanks in advance!
Hi,
I need to build a component which would take a few XML documents in input and check the following kind of rules:
XML1:/bookstore/book[price>35.00] != null
and (XML2:/city/name = 'Montreal'
or XML3://customer[@language] contains 'en')
Basically my component should be able to:
substitute the XML tokens with the corresponding XML document(before colon)
apply xpath query on this XML document
check the xpath output against expected result ("=", "!=", "contains")
follow the basic syntax ("and", "or" and parentheses)
tell if the rule is true or false
Do you know any library which could help me? maybe JavaCC?
Thanks