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!
Is there any utility for deep cloning for java collections:
Arrays
Lists
Maps
NOTE: prefer some solution without usage of serialization, but with use of Object.clone() method. I can be sure that my custom object will implement clone() method and will use only java-standard classes that are cloneable...
What is the best way to insert an image programatically into the RichTextBox control in C# Winforms? If the method is using Clipboard then what is the optimized way to keep the Clipboard original data (i.e. the data state before placing my image on the Clipboard) available to be replaced after my temporary usage of Clipboard for inseting my image in Rich Text Box Control.
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 ?
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'm looking for a JVM profiler (preferably open source) so I can look at the heap and cpu usage 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,
Need a simple a way of rounding off an Image. I need the corners to be transparent. This link shows how to do it via command line:
http://www.imagemagick.org/Usage/thumbnails/#rounded
What I need is the corresponding RMagick\Ruby code... Thanks!
Is there a way to circumbent google app engine sdk to allow the usage of classes that are not present in the GAE JRE white list? I know the app that I would be building will not run in appspot, but at least in my development server, I need to access a postgresql database(java.net.socket.*) and generate some files(java.io.FileWriter) in my development server.
I want to write an emacs function that does the following -
1) Start a new shell named "abc".
2) Change the dir "/opt/abc"
3) In the dir run a shell command "python abc.py"
I have written the following fucntion -
(defun abc-server ()
(interactive)
(shell-command "cd /opt/abc/")
(shell-command "python abc.py"))
The problem with the above -
1) It doesnt start a new shell
2) It doesnt change the dir.
3) When the cmd executes, it opens a browser window, which completely blocks any usage of emacs.
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 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.
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 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.*;
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?
It seems to me that it is rendundant information as the usage of the class will make it apparent that it is an exception. Furthermore, in PHP, the class must extend the Exception class so it will be apparent that it is an exception when looking at the class on its own.
Despite this, developers usually apply the suffix 'Exception'. Why is this?
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 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!
I want to make a program in C++ that reads a file where each field will have a number before it that indicates how long it is.
The problem is I read every record in object of a class; how do I make the attributes of the class dynamic?
For example if the field is "john" it will read it in a 4 char array.
I don't want to make an array of 1000 elements as minimum memory usage is very important.
When a whole project (solution) consists of multiple subprojects (.vcproj), what is a preferable way to tie them: as static libraries or as shared libraries?
Assuming that those subprojects are not used elsewhere, the shared libraries approach shouldn't decrease memory usage or load time.
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
I am searching a free diff tool with support of native syntax and markup for XAML, but failed to find one. I like Altova's DiffDog but it's paid. CodeCompare is an useful tool. It has some worth with its integration into VisualStudio and usage of native editors. It's a perfect solution for XML! However, it does not support XAML editors. Who can recommend a diff tool for XAML?
How to make this merge function as class decorator?
def merge(*arg, **kwarg): # get decorator args & kwargs
def func(f):
def tmp(*args, **kwargs): # get function args & kwargs
kwargs.update(kwarg) # merge two dictionaries
return f(*args, **kwargs) # return merged data
return tmp
return func
Usage:
@other_decorator # return *args and **kwarg
@merge(list=['one','two','three']) # need to merge with @other_decorator
def test(*a, **k): # get merged args and kwargs
print 'args:', a
print 'kwargs:', k
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.
Why would someone use WHERE 1=1 AND <conditions> in a SQL clause (Either SQL obtained through concatenated strings, either view definition)
I've seen somewhere that this would be used to protect against SQL Injection, but it seems very weird.
If there is injection WHERE 1 = 1 AND injected OR 1=1 would have the same result as injected OR 1=1.
Later edit: What about the usage in a view definition?
Does anyone know of a memory efficient way to generate very large xml files (e.g. 100-500 MiB) in Python?
I've been utilizing lxml, but memory usage is through the roof.