Is there any difference in speed/memory usage for these two equivalent expressions:
Regex.IsMatch(Message, "1000")
Vs
Message.Contains("1000")
Any situations where one is better than other ?
Hi,
Can someone explain to me the usage of Integer, Boolean etc in place of their primitive types in JAVA?
I can't seem to grasp the advantages their are providing. They seem to create unnecessary problems of handling null values.
Thanks!
I found the only one simillar question but that's for linux and xcode only...
http://stackoverflow.com/questions/854675/is-it-possible-to-set-up-a-linux-box-with-distcc-to-build-my-xcode-projects
im really interested to use OSX GCC for OPENBSD BOX. because my server is really slow, and all I need is file sharing and printing at home. I like to use ports very much, especially rebuilding all packages for slow cpu, it's really noticable difference, anyway, IMHO, is it possible?
I've downloaded the "dbd-mysql-0.4.4.zip" and linked it to my project. While I try to run a demo code from NetBeans the very first line
require "dbi"
gives me an error. Is there a different way to do it?
I also tried
jruby setup.rb config --with=dbi,dbd_mysql
from the command prompt and it gave me the following error:
config: unknown option --with=dbi,dbd_mysql
Try 'ruby setup.rb --help' for detailed usage.
Any suggestions please?
I know that I can use gprof to benchmark my code.
However, I have this problem -- I have a smart pointer that has an extra level of indirection (think of it as a proxy object).
As a result, I have this extra layer that effects pretty much all functions, and screws with caching.
Is there a way to measure the time my CPU wastes due to cache misses?
Thanks!
Hello to all, I'm doing a html text feature extractor in C++; the program need to be REALLY fast: i need to extract a this features in ms per html page and the memory usage needs to be good and finally unicode encoding well be nice.
I know how difficult is to have all of this things, but i want a parser close to these things at least.
Somebody have a suggestion?
I was going through some previous posts on CONNECT BY usage. What I need to find is that what to do if I want to get all the parents (i.e, up to root) and just one child for a node, say 4.
It seems Like I will have to use union of the following two:-
SELECT *
FROM hierarchy
START WITH id = 4
CONNECT BY id = PRIOR parent
union
SELECT *
FROM hierarchy
WHERE LEVEL =<2
START WITH
id = 4
CONNECT BY
parent = PRIOR id
Is there a better way to do this, some workaround that is more optimized?
Is there a way to pause a process (running from an executable) so that it stops the cpu load while it's paused, and waits till it's unpaused to go on with its work? Possibly in python, or in some way accessible by python.
Hello, is it good, that every PHP class implements a Singleton pattern? I think, it will be less memory usage because of it. Is it right opinion? Thanks!
Hi:
Is there any alternative to non-ISO gcc specific extension __attribute__ on 64-bit kernels ?
Three types that i've noticed are: function attributes, type attributes and variable attributes.
eg.
i'd like to avoid using __attribute__((__packed__)) for structures passed over the network, even though some gcc based code do use it.
Any suggestions or pointers on how to entirely avoid __attribute__ usage in C systems/kernel code ?
thanks
Saifi.
Is loading only the needed classes directly a good way of reducing the overall memory usage of a Java application?
For example:
import java.awt.Graphics;
vs
import java.awt.*;
I'm looking for statistics on SCM usage, in particular I'm trying to find out what percentage of their time developers spend on SCM-related tasks. The more detailed the breakdown, the better. Online and offline resources would both be tremendously useful to me. Can anyone point me towards some industry studies? Preferably recent ones?
I'm looking for a JVM profiler (preferably open source) so I can look at the heap and cpuusage of my personal website.
I've used Lambda Probe, and I like it because it provides a web interface for my remote Unix computer that has no display. I was wondering what else is available
Thanks,
when i made https enabled in secure url and front end secure url usage to yes in magento the checkout page becomes not found. Should i need to do anything more? where i have to place my ssl certificates.
please help me in this
Is there significant cpu/memory overhead associated with using automatic arrays with g++/Intel on 64-bit x86 linux platform?
int function(int N) {
double array[N];
overhead compared to allocating array before hand (assuming function is called multiple times)
overhead compared to using new
overhead compared to using malloc
The range of N may be from 1kb to 16kb roughly, stack overrun is not a problem.
On a SMP machine we must use spin_lock_irqsave and not spin_lock_irq from interrupt context.
Why would we want to save the flags (which contains the IF)?
Is there another interrupt routine that could interrupt us?
The flags are per CPU?
Is there a way to include examples for multiple languages (C# and Visual Basic, for example) in XML documentation?
I'm using SandCastle to build MSDN-style documentation and would like to include usage examples for a few .NET languages.
How does server management software work?
I was reading about those software and I found that they can monitor CPU speed/temperature.
How one can do this in C++?
I'm new to T-SQL command MERGE so I found a place in my SQL logic where I can use it and want to test it but can't figure out how exatcly should I use it:
IF (EXISTS (SELECT 1 FROM commissions_history WHERE request = @requestID))
UPDATE commissions_history
SET amount = @amount
WHERE request = @requestID
ELSE
INSERT INTO commissions_history (amount) VALUES @amount)
Plase suggest the proper usage. Thanks!
hi,
I wanted to have function which will accept as
foo(...)
{
}
usage of this would be
foo(1,2,3);
foo(1)
foo(1,2,3,4,5,5,6);
va_list can be used but again for that I have to pass foo(int count, ...), as this at run time i dont know how many argument i have.
any pointer would be appreciated
Thanks
Under WindowsCE, C++ project, I'd like to get CPU utilization and memory allocation data real time - for logging and troubleshooting. Is there a library or activeX available that i could include in my code and use [without bringing my process to a halt, preferably], anyone knows?
thanks much for any insight!
O.
Hi, I made an android application with googlemap api, and draw some 16x16 png (about 200 count) on overlay. When I move or zoom on/in mapview, "out of memory" error occurs very often.
I also used the googlemap appication in my htc itself. Seams that it uses about 14+MB memmory, and never happens "out of memory".
How to save memmory usage in a googlemap api, or how to enlarge android api memmory limit.
Thanks a lot!
In API documentation, and sometimes even used in discussions here on Stack Overflow, I sometimes see the pound (#) character used instead of the dot (.) as the separator between the class name and the method name. For example:
Settings#maxPageSize
I'm wondering what this usage means, and where it comes from?
As far as I'm concerned, the ideal amount of threads is 3: one for the UI, one for CPU resources, and one for IO resources.
But I'm probably wrong.
I'm just getting introduced to them, but I've always used one for the UI and one for everything else.
When should I use threads and how? How do I know if I should be using them?
Today I came across a new CSS syntax that I have never seen before
content:"\00a0";
Checking it on w3schools, it explains:
Definition and Usage
The content property is used with the :before and :after pseudo-elements, to insert generated content.
My question is, can you point out to me in real world example, how do we use this 'content' syntax? And what does the \00a0 mean in this case?