I have a vector of custom Struct that needs to be sorted on different criteria each time
Implementing operator < will allow only one criteria
But I want to be able to specify sorting criteria each time I call C++ standard sort.
How to do that?
Please note it is better to be efficient in running time..
Thanks
I need a simple floating point rounding function, thus:
double round(double);
round(0.1) = 0
round(-0.1) = 0
round(-0.9) = -1
I can find ceil() and floor() in the math.h - but not round().
Is it present in the standard C++ library under another name, or is it missing??
When I do System.out.println(map) in Java, I get a nice output in stdout. How can I obtain this same string representation of a Map in a variable without meddling with standard output? Something like String mapAsString = Collections.toString(map)?
This is my first question on Stack Overflow, I would like to know about any c programming books that have real programs to introduce real problems as opposed to standard books with examples aimed to teach the language it should be sort of like a challenge with solutions so that concepts like recursion can be used i know that i should find solutions to existing problems to learn the language but this is my first attempt and i find it hard to understand some simple problems so i was hoping for a book with solutions.
Hi, we need to send an http post from an iphone device to our server with some info which the device token (APNS) which we want to store. How on the server do you read the HTTP post and store what is in it? We just have a standard ISP hosted server which currently just has a website.
Thanks
(Context: running autohotkey scripts to try and automate some tests. The plan is to take screenshots and then compare them to 'standard' screenshots to detect if output has changed).
Is there a 'clever' way to check if two png images are different?
By clever I mean other than comparing them byte by byte? (after having compared their size, obviously)
I need to encode streams of 8 byte such that encoded stream has only digits (zero to nine) in them. Are their any standard encoding mechanism for doing this? If there are multiple ways to do it, which one is efficient in terms of length of encoded string (shorter is better)?
I have a standard associative array in PHP. what's the simplest way to get the last key in that array?
example:
$foo = array('key1' => 'val1', 'key2' => 'val2', 'key3' => 'val3');
and i would like to get 'key3';
Is there a clean, preferably standard method of trimming leading and trailing whitespace from a string in C? I'd roll my own, but I would think this is a common problem with an equally common solution.
Is there a standard way to check if a view layout exists from within a Controller in Rails? I'm trying to allow the user to determine the layout, but it needs to exist first.
Sorry if SO is not the best place, but I have time-tracking enabled in JIRA and want to be able to generate a time-report for each user over a given date range. The only time-tracking report option I have is very limited and doesn't do what I want, is it possible through standard functionality or a free plugin perhaps?
I get a "[notice] child pid 26701 exit signal Segmentation fault (11)" in apache log when I try to do a simple soap request using standard php soap library.
I'm running php 5.1.6 on Centos 5.4
A friend is wanting me to help her convert her flash based website to html. She has an embedded textbox with a scrollbar that is using a flower instead of a normal scrollbar.
Avoiding the obvious question of why a user would want a non-standard element to do this task, is it possible to do this without flash?
In the following code, when the ctor of X is called will the ctor of A or B be called first? Does the order in which they are placed in the body of the class control this? If somebody can provide a snippet of text from the C++ standard that talks about this issue, that would be perfect.
class A;
class B;
class X
{
private:
A a;
B b;
}
Hi!
I want to create a small code in C++ with the same functionality as "tail-f": watch for new lines in a text file and show them in the standard output.
The idea is to have a thread that monitors the file
Is there an easy way to do it without opening and closing the file each time?
So I made a standard swing application in Netbeans 6.8 and I can't find where the resource file is for File/Exit in the projects view. All the other resource files can be found in the <project>/resources.
Am I missing something?
So windows premium/standard/ultimate, are these versions all ok for a development computer?
ie. do any prevent installations of things like sql server, vs.net,etc?
hello ,
I'm a little bit confused about it .
it seems that it is integrated with Google web kit tools to build Google web apps .
but can i use to build a Gui for standard java app , (like netbeans) ??
i know it sounds silly but i spend a lot of time to know if is it possible or not but i couldn't know.
notice that i am a mac user , ( WindowBuilder on mac seems not fully supported ) .
thanks in advance .
When I run perl, I get the warning:
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
Any ideas on how to fix it?
I'm using generics rather long time but I've never used construction like List<? super T>.
What does it mean? How to use it? How does it look after erasure?
I also wonder: is it something standard in generic programming (template programming?) or it's just a java 'invention'? Does c#, for example, allow similar constructions?