473,407 Members | 2,312 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,407 software developers and data experts.

Getting an iterator to an arbitrary index of a string

Hey all,

Does anyone know how to get an iterator to an arbitrary location in a string (in
constant time)? This is the best I've been to do:

--- CODE ---

std::string::iterator iteratorForIndex(std::string &theString,
int position) {
return &theString[position];
}

--- CODE ---

Is there any more standard way to do it, again, in constant time?

- JFA1
Jul 23 '05 #1
1 1508
James Aguilar wrote:
Does anyone know how to get an iterator to an arbitrary location in a string (in
constant time)?
a_string.begin() + arbitrary_location_index
This is the best I've been to do:

--- CODE ---

std::string::iterator iteratorForIndex(std::string &theString,
int position) {
return &theString[position];
}

--- CODE ---

Is there any more standard way to do it, again, in constant time?


See above.

V
Jul 23 '05 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

38
by: Grant Edwards | last post by:
In an interview at http://acmqueue.com/modules.php?name=Content&pa=showpage&pid=273 Alan Kay said something I really liked, and I think it applies equally well to Python as well as the languages...
4
by: Paul MG | last post by:
Hi Is there a simple general way of getting the keys out of a map? Or a vector of pairs? My problem seems to be that the pair<> type returned by iterating through either has no methods to...
26
by: Michael Klatt | last post by:
I am trying to write an iterator for a std::set that allows the iterator target to be modified. Here is some relvant code: template <class Set> // Set is an instance of std::set<> class...
29
by: Hagen | last post by:
Hello, in a recent thread "speed of vector vs array" I read about the problem of the slow acces by addressing vector elements by indexing, unfortunately I see no workaround in my case. My...
3
by: Brett Robichaud | last post by:
What is the correct way to allocate a string:iterator using a char* buffer? In Visual C++ 7.1 the following works fine (where pBuf is a char*): std::string::iterator start = pBuf; But under...
13
by: Adam Hartshorne | last post by:
Hi All, I was wondering if anybody can tell me what is wrong with the following code, in a .h file I have std::list<std::vector<Site> > positions ; std::list<std::vector<Site> >::iterator...
13
by: Chameleon | last post by:
I am programming in C++ for 4 years, so I am not a newbie but I am not a very experienced programmer on standard C++ libary. My question is this: Can you tell me one case which an iterator is...
8
by: bearophileHUGS | last post by:
Often I need to tell the len of an iterator, this is a stupid example: len isn't able to tell it: Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: object of...
3
by: Adrian | last post by:
In the following code example I am trying to create a generic interface for a bunch of objects. Each concrete type is stored in its own container and the a container of pointer's to base is used so I...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
0
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
0
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...
0
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing,...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.