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by: Tony Marston |
last post by:
Several months ago I started a thread with the title "What is/is not
considered to be good OO programming" which started a long and
interesting discussion.
I have condensed the arguments into a single article which can be
viewed at
http://www.tonymarston.net/php-mysql/good-bad-oop.html
I fully expect this to be the start of another flame war, so sharpen
your knives and get stuck in!
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by: Duane Morin |
last post by:
I've inherited an XSL transform that I need to squeeze every last
millisecond out of (since it's running several hundred thousand
times). I've noticed that there are 26 match clauses in the file.
They are 13 pairs that each check the same condition, like this:
<xsl:template match="A/foo">
....
<xsl:template match="B/foo">
....
<xsl:template match="A/bar">
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by: Adam Monsen |
last post by:
The following script is a high-performance link (<a
href="...">...</a>) extractor. I'm posting to this list in hopes that
anyone interested will offer constructive
criticism/suggestions/comments/etc. Mainly I'm curious what comments
folks have on my regular expressions. Hopefully someone finds this
kind of thing as interesting like I do! :)
My design goals were as follows:
* extract links from text (most likey valid HTML)
* work faster...
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by: bjarne |
last post by:
Willy Denoyette wrote;
> ... it
> was not the intention of StrousTrup to the achieve the level of efficiency
> of C when he invented C++, ...
Ahmmm. It was my aim to match the performance of C and I achieved that
aim very early on. See, for example "The Design and Evolution of C++".
-- Bjarne Stroustrup; http://www.research.att.com/~bs
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by: Brian Kitt |
last post by:
I have a process where I do some minimal reformating on a TAB delimited
document to prepare for DTS load. This process has been running fine, but I
recently made a change. I have a Full Text index on one column, and
punctuation in the column was causing some problems down the line. This
column is used only for full text indexing, and otherwise ignored. I decided
to use the following regular expression to remove all punctuation (actually...
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by: igor.kulkin |
last post by:
I have a small utility program written in Python which works pretty
slow so I've decided to implement it in C.
I did some benchmarking of Python's code performance. One of the parts
of the program is using Python's standard re (regular expressions)
module to parse the input file. As Python's routines to read from the
file and regular expressions are most likely implemented via native
libraries I would expect that the C code, which reads...
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by: Mirko Dziadzka |
last post by:
Hi all
I understand that the C implementation of Python use a global interpreter
lock to avoid problems, so doing CPU bound tasks in multiple threads
will not result in better performance on multi-CPU systems.
However, I assumed that calls to (thread safe) C Library functions
release the global interpreter lock.
Today I checked the performance of some slow re.match() calls and found,
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by: Frenz |
last post by:
Hi,
I'm facing a performance issue with the following code:
MatchCollection match = regex.Matches(strInput);
int i = match.Count; //This line is consuming 98% of CPU time
for(int j =0;j<i;j++)
{
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by: cnb |
last post by:
If I buy a multicore computer and I have really intensive program. How
would that be distributed across the cores?
Will algorithms always have to be programmed and told specifically to
run on several cores so if not told it will only utilize one core?
So is the free lunch really over or is this just an overhyped
phenomena?
Is threading with Python hard? Can you start several processes with
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by: Ketchup |
last post by:
Hello everyone,
I am writing a utility. Part of its function is to do a block-mode copy of
files and generate MD5 / SHA1 hashes on the fly. The functionality is
similar to that of the Unix DD / DCFLDD utilities. I am using API calls to
get handles to files and FileStreams to perform the copy block by block,
hashing on the way. The relevant portion of the code is below. I am using
byte by byte transfer to avoid copying the file...
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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, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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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 tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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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 Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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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, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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