I have a global variable 'csId' of string type. In the code below under drawChart() function, in for loop, csID variable should be set to '1' by the modelLocator when i=0 and csId should be set to '2' by modelLocator when i=1.(considering lengh=2).
Alert in drawchart() (for csId) seems to be printing the right 'csid' values(both 1 and 2) but in the dataFunction() 'columnSeries_labelFunc' i am always getting the csId Alert value as '2' and never as '1'.
Please find the code below:
drawchart() function::
public function drawChart():void
{
var cs:ColumnSeries= new ColumnSeries();
var lenght:Number=AppModelLocator.getInstance().ctsModel.productSummary.getItemAt(0).collMgmtOfcList.length;
myChart.series = [cs];
var tempObj:Object;
for(csLoop=0;csLoop<lenght;csLoop++)
{
cs = new ColumnSeries();
this.csId= new String(String(AppModelLocator.getInstance().ctsModel.productSummary.getItemAt(0).collMgmtOfcList[csLoop]));
Alert.show("csId="+this.csId);
cs.id=this.csId;
cs.displayName = 'Exposure';
cs.dataFunction=columnSeries_labelFunc;
myChart.series[csLoop] = cs;
}
columnSeries_labelFunc() function::
private function columnSeries_labelFunc(series:Series, item:Object, fieldName:String):Object {
var col:Number=0;
Alert.show("value of csid in columnSeries_labelFunc="+this.csId);
if(fieldName == "yValue" && series.id==csId){
return(item.exposureUSDList[0]);
}else if(fieldName == "yValue" && series.id==csId) {
return(item.exposureUSDList[1]);
}else if(fieldName == "xValue"){
return(item.rptType);
}else
return null;
}
Please Help!!!
First: Assigning a value to a global variable repeatedly inside a loop is a bad idea. Nothing good will happen from that.
It's hard to tell from the context here, but the most likely reason that you're having this problem is that the flow of execution is as follows:
drawChart() executes synchronously, counting through each step in the loop, creating the ColumnSeries, which are each invalidated, meaning they will redraw on the next frame. The function ends, with csID at the last value it held.
The app goes into the next step in the elastic racetrack and validates the invalidated components.
columnSeries_labelFunc is called, with csID still holding the terminal value from the loop.
The end result being that columnSeries_labelFunc isn't called until you're already completely finished in drawChart.
The simplest fix would be to read the id that you're setting on the series in the label function, rather than relying on a global variable at all.
Related
heres the code
var _obj;
if (instance_exists(obj_text)) _obj = obj_txt_queued; else _obj = obj_text;
with (instance_create_layer(0, 0, "text_layer", _obj))
{
msg = argument[0];
if (instance_exists(other)) originInstance = other.id else originInstance = noone;
if (argument_count > 1) background = argument[1]; else background = 1;
}
with (obj_phae)
{ if (state != scr_player_state_lock)
{
lastState = state;
state = scr_player_state_lock;
}
}
[layers](https://i.stack.imgur.com/9u9tD.png)
I tried removing any extra rooms that were not needed and I tried changing the layer name to something else.
I also tried using var instance_create_layer() but that obviously didn't work
I'm a bit confused at this part:
with (instance_create_layer(0, 0, "text_layer", _obj))
Especially the with(), as that function will go through every object in the room if it sees an object within the parameter, since you suggested to create a new object with it, I'm surprised it doesn't create an infinite loop. Maybe it works, I've never tried it myself, but I think there's a more logical way to assign variables from one object to a newly created object.
Assuming you want to use the With() statement to address the variables within the _obj, I think you can manage something similair through this function:
var object = instance_create_layer(0, 0, "text_layer", _obj)
object.msg = argument[0];
object.originInstance = id
if (argument_count > 1) object.background = argument[1]; else object.background = 1;
It's probably a given at this point, but double-check that this part of code can only run if it's in the same room that has a layer called "text_layer"
In the worst case, you may also try out instance_create_depth() and use the build-in depth variable from the object instead of the layer names. Using depth is more flexible, but less organised than layers.
I'm trying to get data from firebase and it worked with once().then function, but the problem is when I save the data a variable, its value will change only inside the function ( when the execution of the function is finished then the variable will not have the returned value from firebase )
code example :
static var temp = [];
void tempp() {
var db = FirebaseDatabase.instance.reference();
db.once().then((DataSnapshot snapshot) {
temp.add(1);
print(temp[0]);
});
print(temp[0]);
}
So, the first print statement will print the new value in temp list which is at index zero
but for the second print ( outside the once().then function ) will cause value range error
Invalid value: Valid value range is empty: 0
that means the value that was saved in the function it is not there anymore
How can I save the value after function is executed ?
I tried to use global variables it didn't work,
your help is much appreciated.
thank you.
I Have the following model
class Process: Object {
#objc dynamic var processID:Int = 1
let steps = List<Step>()
}
class Step: Object {
#objc private dynamic var stepCode: Int = 0
#objc dynamic var stepDateUTC: Date? = nil
var stepType: ProcessStepType {
get {
return ProcessStepType(rawValue: stepCode) ?? .created
}
set {
stepCode = newValue.rawValue
}
}
}
enum ProcessStepType: Int { // to review - real value
case created = 0
case scheduled = 1
case processing = 2
case paused = 3
case finished = 4
}
A process can start, processing , paused , resume (to be in step processing again), pause , resume again,etc. the current step is the one with the latest stepDateUTC
I am trying to get all Processes, having for last step ,a step of stepType processing "processing ", ie. where for the last stepDate, stepCode is 2 .
I came with the following predicate... which doesn't work. Any idea of the right perform to perform such query ?
my best trial is the one. Is it possible to get to this result via one realm query .
let processes = realm.objects(Process.self).filter(NSPredicate(format: "ANY steps.stepCode = 2 AND NOT (ANY steps.stepCode = 4)")
let ongoingprocesses = processes.filter(){$0.steps.sorted(byKeyPath: "stepDateUTC", ascending: false).first!.stepType == .processing}
what I hoped would work
NSPredicate(format: "steps[LAST].stepCode = \(TicketStepType.processing.rawValue)")
I understand [LAST] is not supported by realm (as per the cheatsheet). but is there anyway around I could achieve my goal through a realm query?
There are a few ways to approach this and it doesn't appear the date property is relevant because lists are stored in sequential order (as long as they are not altered), so the last element in the List was added last.
This first piece of code will filter for processes where the last element is 'processing'. I coded this long-handed so the flow is more understandable.
let results = realm.objects(Process.self).filter { p in
let lastIndex = p.steps.count - 1
let step = p.steps[lastIndex]
let type = step.stepType
if type == .processing {
return true
}
return false
}
Note that Realm objects are lazily loaded - which means thousands of objects have a low memory impact. By filtering using Swift, the objects are filtered in memory so the impact is more significant.
The second piece of code is what I would suggest as it makes filtering much simpler, but would require a slight change to the Process model.
class Process: Object {
#objc dynamic var processID:Int = 1
let stepHistory = List<Step>() //RENAMED: the history of the steps
#objc dynamic var name = ""
//ADDED: new property tracks current step
#objc dynamic var current_step = ProcessStepType.created.index
}
My thought here is that the Process model keeps a 'history' of steps that have occurred so far, and then what the current_step is.
I also modified the ProcessStepType enum to make it more filterable friendly.
enum ProcessStepType: Int { // to review - real value
case created = 0
case scheduled = 1
case processing = 2
case paused = 3
case finished = 4
//this is used when filtering
var index: Int {
switch self {
case .created:
return 0
case .scheduled:
return 1
case .processing:
return 2
case .paused:
return 3
case .finished:
return 4
}
}
}
Then to return all processes where the last step in the list is 'processing' here's the filter
let results2 = realm.objects(Process.self).filter("current_step == %#", ProcessStepType.processing.index)
The final thought is to add some code to the Process model so when a step is added to the list, the current_step var is also updated. Coding that is left to the OP.
in Flex I have something like that:
var dg:DataGrid = new DataGrid();
if (something) dg = dg1 else if (something_2) dg = dg2;
dg.dataProvider.getItemAt(3).id;
and dg is ALWAYS pointing at DataGrid (even if dg1 has name DataGrid_test and dg2 = DataGrid_test2) and finally action is made on my first DataGrid (DataGrid_test).
Why?
How can I pass dg1 or dg2 to dg?
Here is pasted almost full code of this part of application. I edited it to make that more clear.
var dg:DataGrid = null;
if ( currentState == "state1" ) { //if this condition is true then app. go into if and
dg = dataGrid_first; // make dg = DataGrid (1)
test.text = "inco"; // shows "inco" in "test" label
} else if ( currentState == "state2" ) { // if this is true then app. go..
dg = dataGrid_second; //here and set dg as DataGrid (exactly!) (2)
test.text = "outgo"; // and change test label into blank text (earlier text disapears)
}
search(dg);
It is modified with advice of '#splash'
Still not working.
EDIT:
I made this sceond edit to answer for all You who are helping me with that :) I think that it will be the best way. In codeblock above I added comments. (please read now comments and after that come back here :) )
Now I will explain exactly what happens.
I debug it many times and here are results:
dg is pointing at DataGrid (as component in flex, not as my dataGrid_first), I needed to extend DataGrid so now it is ColorColumn component (I don't know if I called it properly), not DataGrid. And dg is pointing at ColorColumn not at dataGrid_first or dataGrid_second. I even tried today the same thing what suggest #splash:
if ( currentState == "state1" ) {
test.text = "inco";
search(dataGrid_first);
} else if ( currentState == "state2" ) {
test.text = "outgo";
search(dataGrid_second);
}
and search still points at ColorColumn :/ My problem is really easy- I just want to pass to search different dataGrid on each state. If You have other ideas how I can do that in right way then I will pleased to hear about it. :)
But still I don't understand why it doesn't work. My search function uses algorhitm Boyer-Moor for searching through dataGrid.dataProvider for some text. If it find something then it is pushed into new array and after passing whole dataProvider I colorize rows with searched word.
If dg is never pointing to dg1 and dg2 then your (something) expressions may be evaluate to false. Check the value of your if-conditions - this should be easy to debug.
This should work:
var dg:DataGrid = null;
if (something)
dg = dg1;
else if (something_2)
dg = dg2;
if (dg)
{
// do something with dg
}
[Update]
I still can't see why your code isn't working, but you could simplify it like this:
if ( currentState == "state1" ) {
test.text = "inco";
search(dataGrid_first);
} else if ( currentState == "state2" ) {
test.text = "outgo";
search(dataGrid_second);
}
I'd propose to write this - since I guess either dg1 or dg2 should be assigned:
if (something) {
dg = dg1;
} else {
dg = dg2;
}
There may be cases, where if () {} else () {} neither executes the first or the second conditional block.
Finally a small hint, which structurally eliminates unwanted assignments in if conditions: Always write the literal left of the comparison operation: if ( "state1" == currentState ). If you accidentally typed = instead of ==, the flex compiler emits an error. The other notation silently assigns a value.
Additionally: Did you single-stepped through your code and watched the variables dg1, dg2 and dg? If not, set a breakpoint a few line before the if-statement and run the code step by step from there on. What do you see?
Here's a another tip: Use assertions to check for inconistencies:
package my.company.utilities {
public function assert(expression:Boolean):void {
// probably conditionally compile this statement
if (!expression) {
throw new Error("Assertion failed!");
}
} // assert
}
Use it e.g. at the beginning of a method like this:
public function doTransaction( fromAccount:int, toAccount:int ) {
assert( 0 < fromAccount );
assert( 0 < toAccount );
}
A typically good use of assert is to check variables regarding their range. As of the above example, fromAccount and toAccount should always be positive. Due to a bug, bad values might get passed to doTransaction(). In this case, the assertion fires an error.
In the big picture I want to create a frame based application in Bada that has a single UI control - a label. So far so good, but I want it to display a number of my choosing and decrement it repeatedly every X seconds. The threading is fine (I think), but I can't pass the label pointer as a class variable.
//MyTask.h
//...
result Construct(Label* pLabel, int seconds);
//...
Label* pLabel;
//MyTask.cpp
//...
result
MyTask::Construct(Label* pLabel, int seconds) {
result r = E_SUCCESS;
r = Thread::Construct(THREAD_TYPE_EVENT_DRIVEN);
AppLog("I'm in da constructor");
this->pLabel = pLabel;
this->seconds = seconds;
return r;
}
//...
bool
Threading::OnAppInitializing(AppRegistry& appRegistry)
{
// ...
Label* pLabel = new Label();
pLabel = static_cast<Label*>(pForm->GetControl(L"IDC_LABEL1"));
MyTask* task = new MyTask();
task->Construct(&pLabel); // HERE IS THE ERROR no matching for Label**
task->Start();
// ...
}
The problem is that I have tried every possible combination of *, &, and just plain pLabel, known in Combinatorics...
It is not extremely important that I get this (it is just for training) but I am dying to understand how to solve the problem.
Have you tried:
task->Construct(pLabel, 0);
And by that I want to point out that you are missing the second parameter for MyTask::Construct.
No, I haven't. I don't know of a second parameter. But this problem is solved. If I declare a variable Object* __pVar, then the constructor should be Init(Object* pVar), and if I want to initialize an instance variable I should write
Object* pVar = new Object();
MyClass* mClass = new MyClass();
mClass->Construct(pVar);