I am creating an app and I would like a user to set some obligatory preferences during first app launch. What is the most common scenario to achieve this? Should I set some user defaults to see if the app has been setup? Also - if I determine that the app is being launched for the first time - how should I display "Setup" window? If I load it from the separte xib file - how will I deffer the display of main app window?
I have the second order differential equation
d^2(y(t))/dt^2+ B1*d(y(t))/dt+ c1*y(t)=A1*x(t)
t is in seconds and is greater than 0.
A1, B1, C1 are constants that equal:
A1= 3.8469x10^6
B1= 325.6907
C1= 3.8469x10^6
This system is linear, time-invariant, and casual. The system is called H1.
I want to use Matlab to compute and plot the impulse response function h1(t) and the unit step response function g1(t) of this system.
I have three vectors in an xts R object. Call them V1, V2, V3. After merging, the order of them left to right is V2, V3, V1. How do I re-arrange them so they read (from left to right) as V1, V2, V3?
I use order by rand() LIMIT 1. I have a database with 150,000 rows and I'm getting split second results after a select of three tables. If I stay under a million rows, am I going to be OK?
At what point should I consider upgrading my code to something more sophisticated?
Hi,
I'm trying to get Rails to capitalize the first character of a string, and leave all the others the way they are. I'm running into a problem where "i'm from New York" gets turned into "I'm from new york."
What method would I use to select the first character?
Thanks
I run a site where users can upload content that is displayed in a gallery where other users can sort and filter that content. While implementing RSS feeds, I was wondering how common it was for an RSS feed to display items in an order that's different from chronological. For example, displaying content by Most Views first. This could be useful for someone wanting to keep tabs on trending content. How do RSS readers handle this, since most RSS feeds are ordered chronologically?
hi,
I selecting which fields to show in the Headers and in the Body of my nodes, in the "Manage Fields" settings of my content type.
However I would like to have different order for header elements and node elements.
Is this feasable ?
thanks
In ant, within a target are the tasks guaranteed to be executed in order or do I need to set up a (annoyingly long, thin) dependency chain? I couldn't find the answer in the manual or Google, but I may have just missed it. Much thanks.
If A1 is [Jones,Mike], how can I get it to seperate but still use the first name as text in the other cell? Yes, text to columns would work greatly, but it does let me use the first name in a formula.
$sql = "SELECT * FROM table ORDER BY :sort :dir LIMIT :start, :results";
$stmt = $dbh->prepare($sql);
$stmt->execute(array(
'sort' => $_GET['sort'],
'dir' => $_GET['dir'],
'start' => $_GET['start'],
'results' => $_GET['results'],
)
);
I tried to use prepare to do the job,but $stmt->fetchAll(PDO::FETCH_ASSOC); returns nothing.
I've been handed a Byte[] that contains a file. I need to pass this to another method that is expecting two parameters, a char* to the beginning of the file and a char* to the end of the file.
I'm assuming I need to pin the array first so it doesn't get collected. I don't imagine I can then just cast the first and last elements, right?
Hi, I'm getting up to speed with Flex and I am looking for any example of implementing a drag and drop re-sort within a vbox container. Basically I have a Vbox that contains a number of canvas's that are full width and 35px high. I want to be able to drag and drop them to re-order within the vbox.
Any help is greatly appreciated - thanks,
b
string time = "Job started: donderdag 6 mei 2010 at 20:00:02"
var filterReg = new Regex(@".*:", RegexOptions.Compiled);
time = filterReg.Replace(time, String.Empty);
Is it possible to stop after the first occurence? so at the first ":".
hi, i want only the first word of a variable.. example input:
<?php $myvalue = Test me more; ?>
the output should only "Test", the first word of the input.. how can i do this?
Hi
I need to know how to get the first n words from text stored in my DB in PHP?
for example if there is some text in my DB like this one :
"word1 word2 word3 word4 text one test four five"
How I can get the first 4 or five words from this text?
Thnks in Advance.
Hi,
Does order of the columns in an Index definition for a table in a database has any effect on the performance?
for e.g. are these two queries different ?
CREATE INDEX xxx ON tablex(col1,col2)
CREATE INDEX xxx ON tablex(col2,col1)
what about the in case that I use a BTREE index?
I am using Mysql.
thanks
I was wondering specifically about whether ItemCreated or ItemBound happens first but I can't seem to find any information on the order that ListView events fire. Can anyone point me to a resource for this information?
Note: this is for the System.Web.UI.WebControls.ListView
My program needs to observe changing in windows order and position. Like when some window gets above another or moves somewhere. Could it be performed with Cocoa (Window Services, Notification API)?
hi~
REComSession::ListImplementationsL returns the impelementations in an array, accord to which .rsc files in \resource\plugins contain the certain interface ID. what is the mechanism to determine the order in that array?
thank you.
I'm not sure the best way to word this question so bear with me.
Table A has following columns:
id
name
description
Table B has the following columns:
id
a_id(foreign key to Table A)
ip_address
date
Basically Table B contains a row for each time a user views a row from Table A.
My question is how do I sort Table A results, based on the number of matching rows in Table B.
i.e
SELECT *
FROM TableA
ORDER BY (SELECT COUNT(*)
FROM TableB
where TableB.a_id = TableA.id)
Thank you!
Here is my test: I access a servlet to get the JVM to load (absorb the loading request). Then i access a JSP that has <%= 5+7 %> in it and nothing else. The first access to this JSP uses 350ms of CPU time and has latency of 200ms. Subsequent accesses only have latency and cpu time of about 20ms.
Why does the first access to the jsp after starting the servlet container take longer?
Hello, in my web page a user fill a form who send information to a MySql database. One of the data inputs sent is a date/time, in the format date('l jS \of F Y h:i:s A');
(I can change the format as needed)
So when the user submits the form i wanna check if the actual time/date is 30 seconds more than the sent time/date in order to allow or not the submission of the form. Thanks!