I'm working my way through the NotePad tutorial, and that's all fine - I'm not a Java programmer but it's close enough to C# (or vice versa) to make it easy to pick up. I'm surprised that there aren't any RAD tools for Android apart from Mobiforms. Is there anyone out there with experience of Mobiforms ?
I have a weird issue (weird because it is specific to one component) with applicationComplete in a fairly simple application. All the UI components are declared in MXML. I can access them all in applicationComplete, but not a spark.components.TextArea component, named taStatus here; it is null in the handler.
MXML looks sort of like this (there are lots of other components, but nothing special)
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="710" minHeight="640" applicationComplete="onApplicationComplete(event)" width="710" height="640">
<mx:TabNavigator left="15" right="15" top="15" bottom="340" paddingTop="0">
<s:NavigatorContent label="General" width="100%" height="100%">
<s:Label x="93" y="71" text="Label" id="lblTest"/>
</s:NavigatorContent>
<s:NavigatorContent label="Status" width="100%" height="100%">
<s:TextArea id="taStatus" width="100%" height="100%" text="Startup." editable="false"/>
</s:NavigatorContent>
</mx:TabNavigator>
<fx:Script source="main.as" />
</s:Application>
Here is the handler in main.as
protected function onApplicationComplete(event: FlexEvent) : void
{
lblTest.text = 'abc789'; // OK
taStatus.text = 'abc789'; // Fail
}
TypeError: Error #1009: Cannot access a property or method of a null object reference. So taStatus is null... What is so special about this TextArea?
What I'm trying to do is create a layout like this:
+--------+
Search |EditText| [Button]
+--------+
+---------+
|Tab 1 |---------+
| |Tab 2 |
|---------+---------+-----------------+
| ListView Item 1 |
| ListView Item 2 |
| ListView Item 3 |
| ListView Item 4 |
| ListView Item 5 |
| ListView Item 6 |
| ListView Item 7 |
| ListView Item 8 |
| ListView Item 9 |
| ListView Item 10 |
+-------------------------------------+
So that's a TextView saying 'Search', an EditText and a button.
Then below it the tabs - Tab 1 has a ListView, Tab 2 some other stuff. I can get a simple TabHost setup with two tabs working fine but can't get the above to lay out properly. Any hints ?
I'd create the UI in the Eclipse designer and check the XML from that, except the designer doesn't work with TabHost. And DroidDraw doesn't seem to know about TabHost.
Hi,
I have run into a really odd bug with FF3.5.9 (and potentially lower) where it is moving the input:text below the input:submit. The strangest thing with this is that it is working on IE6/7/8, Chrome, Safari and Firefox 3.6. Here is a test page so you can see how it is marked up: http://paste-it.net/public/s6479e6/
I can fix the issue for FF3.5.9 by adding padding-bottom (15px) but this then puts the other browsers out of action.
Has anyone else had a similar issue and found a fix? Seems like such a minor issue but I just can't find a fix for it and I am not really into having to absolute position the inputs as that seems too hacky!
Thanks for your time,
Ad
I'm trying to prove the following in Coq:
Goal (forall x:X, P(x) /\ Q(x)) - ((forall x:X, P (x)) /\ (forall x:X, Q (x))).
Can someone please help? I'm not sure whether to split, make an assumption etc.
My apologies for being a complete noob
What's the story behind the ::'s sometimes token name
T_PAAMAYIM_NEKUDOTAYIM
I'm mainly interested in knowing if
This is an abbreviation for something else
This is a phrase in a language other than English, and if so what's the language and what's a rough translation
This is some obscure-to-me programming term
Drunk Developers
Thanks!
Hi i am developing an app for my QA department. I need to programically get how many phone numbers are there in the entire address book. No user input. Just click a button and then get how many phonenumbers are there in the ENTIRE addressbook.
Please email me at [email protected]
I am trying to reproduce a SQL query using a LINQ to Entities query. The following SQL works fine, I just don't see how to do it in LINQ. I have tried for a few hours today but I'm just missing something.
SELECT
h.ReqID,
rs.RoutingSection
FROM ReqHeader h
JOIN ReqRoutings rr ON rr.ReqRoutingID = (SELECT TOP 1 r1.ReqRoutingID
FROM ReqRoutings r1
WHERE r1.ReqID = h.ReqID
ORDER BY r1.ReqRoutingID desc)
JOIN ReqRoutingSections rs ON rs.RoutingSectionID = rr.RoutingSectionID
Edit***
Here is my table scema-
Requisitions:
ReqID PK string
ReqDate datetime
etc...
ReqRoutings:
ID PK int
ReqID FK
RoutingSection FK int
RoutingDate
ReqRoutingSections:
Id PK int
RoutingSection string
The idea is that each Requisition can be routed many times, for my query I need the last RoutingSection to be returned along with the Requisition info.
Sample data:
Requisitions: - 1 record
ReqID 123456
ReqDate '12/1/2012'
ReqRoutings: -- 3 records
id 1
ReqID 123456
RoutingSection 3
RoutingDate '12/2/2012'
id 2
ReqID 123456
RoutingSection 2
RoutingDate '12/3/2012'
id 3
ReqID 123456
RoutingSection 4
RoutingDate '12/4/2012'
ReqRoutingSections: -- 3 records
id 2
Supervision
id 3
Safety
id 4
Qaulity Control
The results of the query would be
ReqID = '123456'
RoutingSection = 'QualityControl' -- Last RoutingSection requisition was routed to
I am using Applescript to create a macro where data is transferred from several files to a single file. Data is copied with
copy range the_range destination clipboard
and pasted with
paste worksheet active sheet destination range "A1"
The problem is that most of the formatting is lost and I have not managed to get the "paste special"-syntax correct. I have downloaded "Excel2004AppleScriptRef.pdf".
I'm already a professional J2EE developer by day, and Rails developer by night. I'm planning on adding Python to my list of skills. I'm already convinced a language is just a tool, so I'm not interested in a religious war. I agree with the Pragmatic Programmers that learning one language/year is a good thing for your professional development
So, in your considered opinion, what kinds of applications does Python hit the sweet spot? And why? What advantages does it have, and why do these advantages outweigh the costs in adopting Python?
ADD: I also plan on learning a pure functional language like Scheme.
I just deployed an application to a new server, and although I'm using virtualenv, I had to install a new environment on the production server, which has a different architecture.
Anyway, I received no TemplateSytaxErrors in development, but on the production server, I get:
Exception Type: TemplateSyntaxError
Exception Value: Caught SyntaxError while rendering: invalid syntax (views.py, line 25)
The offending line is:
{% url admin:password_change as password_change_url %}
Upon removing that line, the TemplateSyntaxError hops to the next line that has a colon in it (and lets other template tags work fine).
So my question is this: is there some discrepancy in versions of Python/Django that would allow or disallow the namespacing syntax?
The template tags are in django-grappelli (http://code.google.com/p/django-grappelli/), so I'd rather not go through their code and rewrite all the template tags.
Development server:
32-bit Debian
Python 2.5.5
Django 1.2.1
Production server:
64-bit CentOS
Python 2.4.3
Django 1.2.1
Any ideas?
Is there a place where I can add code that will be executed before unit initialization?
The reason I want to do this is I need to change the DecimalSeparator, this has to be done before the initialization of some units. I have put it in the project source, before Application.Initialize but it is too late by then.
As I see it the only choice I have is to put it in the initialization of the unit that needs the DecimalSeparator to be changed, is this the case?
Thanks in advance for any advice.
I'm doing some error debugging trying to get the errors on our website down to a minimum and there seems to be an error that is popping up quite a lot
Conversion from string "" to type 'Double' is not valid.
I'm unable to replicate this problem but I can see that it is happening.
I've been looking through the code in one of the pages and strolled across this
Dim varWeek As String
If varWeek < 10 Then
'Do something'
End If
Could this be causing the problem as it is trying to see if a String is less than 10 which is an Integer?
As I said before as I am unable to see this error in the first place so changing this to an Integer doesn't change anything on my system.
Thanks.
I had a phone screen the other day with a company that I really want to work for. It went pretty well, based on cues from the HR person, such as "Next step we're going to send you a programming test," and "Well, before I get ahead of myself, do you want to continue the interviewing process." and "We'll send out the test later this afternoon. It doesn't sound like you'll have trouble with it, but I want to be honest we do have a high failure rate on it."
The questions asked weren't technical, just going down my resume, and talking about the work I've done, and how it relates to the position. Nothing I couldn't talk through.
This was last Thursday.
It's now Tuesday, and haven't received the test yet. I sent a follow up email yesterday to the lady who interviewed me, but haven't gotten a response.
Anyone had a similar experience? Am I reading too much into this? Or was I off the mark by thinking I had moved on to the next step in the interview process.
Since this is a company I really want to work for, I'm driving myself insane enumerating all the various what-if scenarios.
say I have the following code:
char[5][5] array;
for(int i =0; i < 5; ++i)
{
for(int j = 0; j < 5; ++i)
{
array[i][j] = 'X';
}
}
Would there be a benefit for initializing each row in this array in a separate thread?
Imagine instead of a 5 by 5 array, we have a 10 by 10?
n x n?
Also, this is done once, during application startup.
I'm looking in to Magento's filtering options (Ecommerce System and PHP Framekwork with an expansive ORM system). Specifically the addFieldToFilter method. In this method, you specify a SQLish filter by passing in a single element array, with the key indicating the type of filter. For example,
array('eq'=>'bar') //eq means equal
array('neq'=>'bar') //neq means not equal
would each give you a where clause that looks like
where field = 'bar';
where field != 'bar';
So, deep in the bowels of the source, I found a comparison type named
'moreq'
that maps to a = comparison operator
array('moreq'=>'27')
where field >= 27
The weird thing is, there's already a 'gteq' comparision type
array('gteq'=>'27')
where field >= 27
So, my question is, what does moreq stand for? Is is some special SQL concept that's supported in other databases that the Magento guys wants to map to MySQL, or is it just "more required" and an example what happens when you're doing rapid agile and trying to maintain backwards compatibility.
Hi,
I'm writing a light remoting app to assist in debugging a problem with remoting communication. This app mimics much of what a larger application does:
Periodically sends a heartbeat to
another peer application, and
periodically verifies that a heartbeat
has been received within some time
threshold.
What we're seeing is in our big application, the heartbeats seem to get dropped. One peer will go for long periods of time without seeing heartbeats from another peer, until the peer that is "dead" is restarted. The big application is responsive in all other ways. We believe it has something to do with the network setup. We were able to repro the problem locally, and fixed it by making some configuration changes to our test environment.
To help our customer diagnose the issue, the mini-remoting app needs to log as much information as possible.
So, is there a way to get the underlying socket for the remoting connection? I'm aware that I could write a custom sink for this, but I'd like to keep the actual remoting process as close to what is implemented in the big app as possible.
Also as an aside, any ideas why the big-app might be "dropping" heartbeats?
Here is the textbook standard way of describing a 'class' or constructor function in JavaScript, straight from the Definitive Guide to JavaScript:
function Rectangle(w,h) {
this.width = w;
this.height = h;
}
Rectangle.prototype.area = function() {
return this.width * this.height;
};
I don't like the dangling prototype manipulation here, so I was trying to think of a way to encapsulate the function definition for area inside the constructor. I came up with this, which I did not expect to work:
function Rectangle(w,h) {
this.width = w;
this.height = h;
this.constructor.prototype.area = function() {
return this.width * this.height;
};
}
I didn't expect this to work because the this reference inside the area function should be pointing to the area function itself, so I wouldn't have access to width and height from this. But it turns out I do!
var rect = new Rectangle(2,3);
var area = rect.area(); // great scott! it is 6
Some further testing confirmed that the this reference inside the area function actually was a reference to the object under construction, not the area function itself.
function Rectangle(w,h) {
this.width = w;
this.height = h;
var me = this;
this.constructor.prototype.whatever = function() {
if (this === me) { alert ('this is not what you think');}
};
}
Turns out the alert pops up, and this is exactly the object under construction. So what is going on here? Why is this not the this I expect it to be?
I was wondering if anyone can tell me if MongoDB or CouchDB are ready for a production environment.
I'm now looking at these storage solutions (I'm favouring MongoDB at the moment), however these projects are quite young and so I foresee that I'm going to have to work quite hard to convince my manager that we should adopt this new technology.
What I'd like to know is:
1) Who is using MongoDB or CouchDB today in a production environment?
2) How are you using MongoDB/CouchDB?
3) What problems (if any) did you come across when you adopted this new storage mechanism (and how did you overcome them)?
4) How did you deal with any migration issues that you had to deal with?
5) Do you have any good/bad experiences with either of these solutions that you'd like to share?
Thanks.
We are doing a migration of our Sybase database that has a utf8 encoding to a server with iso 1 encoding. We are just using char and Varchar for our strings. Will doing backup and restore not truncate any strings? I was thinking that Char and Varchar are just single byte characters.
hey guys
im wondering if i can delete all my website's cookies when user click on logout
because i used this as function to delete cookie but its not functioning properly
setcookie("user",false);
is there a way to delete one domain's cookies in php ?!
hey guys
i wonder what does @ means when we use it before include or require in php ?!
such as :
@include('block.php');
maybe its a noob question , but i need to know it guys ?!
so sorry for that
For a database I'm building, I've decided to use natural numbers as the primary key. I'm aware of the advantages that GUID's allow, but looking at the data, the bulk of row's data were GUID keys.
I want to generate XML records from the database data, and one problem with natural numbers is that I don't want to expose my database key's to the outside world, and allow users to guess "keys." I believe GUID's solve this problem.
So, I think the solution is to generate a sparse, unique iD derived from the natural ID (hopefully it would be 2-way), or just add an extra column in the database and store a guid (or some other multibyte id)
The derived value is nicer because there is no storage penalty, but it would be easier to reverse and guess compared to a GUID.
I'm (buy) curious as to what others on SO have done, and what insights they have.