I am working on AMF3 format decoding. I have used inline objects and variables, however I am having problem with the String reference. Can anyone tell how String reference table is built?
Currently, I have:
var object:Object = new Object();
object.s1 = "abc";
object.s2 = object.s1;
object.s0 = "111";
byteBuffer.writeObject(object);
then I write this to a byteBuffer and finally to a file. I am wondering how String references are built?
Flex builds a table for string references. As soon as Flex encounters a string in an object, it does the following:
If the string is new:
Add the string to the table and increase the reference number.
Otherwise
add a reference to the string.
Related
Let's Example I have String s = "Rahul Kumar" I need to have Rahul as a output using java8
Actual Requirement, I do have a list of Trip Object, I want to set driverName property as only first name to each Trip Object and return that list?
System.out.println( someStringValue.subSequence(0, someStringValue.indexOf(' ')));
I'm getting trouble to incorporate this code into the listOfTrip. If I'm doing like this,
List<CharSequence> list = listOfTrips.stream().map(e -> e.getDriverName().subSequence(0, someStringValue.indexOf(' '))).collect(Collectors.toList()); System.out.println(list);
Here, With this, The return type is wrong and it is not fetching only first name out of full name.
Below will give you the proper result:
List<CharSequence> list2 = listOfTrips.stream()
.map(m->m.getDriverName().substring(0,m.getDriverName().indexOf(' ')))
.collect(Collectors.toList());
Please try this also once:
String s = "Rahul Kumar";
Optional<String> beforeWhiteSpace = Pattern.compile(" ").splitAsStream(s).collect(Collectors.toList()).stream().findFirst();
I am trying to use a string ('npcName') as a variable name. So far I have tried casting dialogMap into a DynamicAccess object, but it gives me the error 'Invalid array access' when I try this:
var npcName:String = 'TestNPC';
var casted = (cast Registry.dialogMap:haxe.DynamicAccess<Dynamic>);
var tempname = casted[root.npcName[0].message];
trace(tempname);
'dialogMap' is an empty map which I want to fill like so:
Registry.dialogMap['message'] = root.npcName[0].message;
How can I use npcName, a string, in the above line of code? Is there a way to transform the string into something usable? Any help would be appreciated.
The haxe.DynamicAccess doesn't have array access (like map[key]), but is an abstract type for working with anonymous structures that are intended to hold collections of objects by the string key. It is designed to work with map.get(key) and map.set(key). It is basically a nicer wrapper around Reflect.field and Reflect.setField and does some safety checks with Reflect.hasField.
var variable = "my_key";
var value = 123;
var dynamicMap = new haxe.DynamicAccess<Dynamic>();
dynamicMap.set(variable, value);
I'm noticing you are doing very much cast and dynamic, so untyped code, which is a bit of contradiction in a typed language. What is the actual type of dialogMap?
Not sure you are aware of it but, Haxe has its own maps, which are fully typed, so you don't need casts.
var map = new Map<String, Int>();
map[variable] = value;
I think this article helps understanding how to work with dynamic (untyped) objects.
Tip; for testing such small functionalities you can doodle around on the try.haxe site : http://try.haxe.org/#4B84E
Hope this helps, otherwise here is some relevant documentation:
http://api.haxe.org/haxe/DynamicAccess.html
https://haxe.org/manual/std-reflection.html
https://haxe.org/manual/types-dynamic.html
http://code.haxe.org/category/beginner/string-variable-reflection.html
So i've made an object called "potato", then started a loop to check if something in "_level0" has the name of "_level0.potato". What i think is that since the the things in _level0 are objects instead of strings, the object name can't be recognized as a string, so im guessing i need to find a way to convert the object name to a string or vice versa.
var potato:MovieClip = this.createEmptyMovieClip("potato", this.getNextHighestDepth());
for(objects in _level0){
trace(_level0[objects])
if(_root[objects] == "_level0.potato"){
trace("OMG, i found a potato on level0")
}
}
Your suggestion that the objects are stored as a string is incorrect. If you try using typeof before your
trace(typeof _level0[objects])
you will see that its type is movieclip
and your "_level0.potato" is string
They will not be equal. But you can convert object reference to string using String(...) construct.
And about names. You're confusing names and references. MovieClip object like some others in ac2 have property called _name. In this property name of object is stored like string. But only name, not the full path to its destination.
For your potato mc _name will be equal "potato"
So you could do your search like this
var potato:MovieClip = this.createEmptyMovieClip("potato",this.getNextHighestDepth());
for(objects in _level0){
trace(_level0[objects])
if(_root[objects]._name == "potato"){
trace("OMG, i found a potato on level0")
}
}
If i use UUID1 for my column names and then retrieve them with php how can i convert that UUID to readable string so i could insert that string to the HTML and then later on use it to select that same column by converting that string back to UUID? Is that even possible?
I could go with UTF8 or something else but i want to avoid collisions and get ordered wide rows, and i really need to store those column names to the HTML, i can't see any other way to do it.
I'm using phpcassa.
You can cast UUID objects to strings to get a nice printable version. That same string can be used with UUID::import() to create an identical UUID object again:
use phpcassa\UUID;
$uuid = UUID::uuid1();
$pretty_uuid = (string)$uuid;
echo("Printable version: " . $pretty_uuid . "\n");
$uuid_copy = UUID::import($pretty_uuid);
assert ($uuid == $uuid_copy);
Assuming you are getting the UUID as byte[], you can use something like this:
public Object convertFromNoSqlImpl(byte[] value) {
byte[] timeArray = new byte[8];
byte[] clockSeqAndNodeArray=new byte[8];
System.arraycopy(value,0,timeArray,0,8);
System.arraycopy(value,8,clockSeqAndNodeArray,0,8);
long time = StandardConverters.convertFromBytes(Long.class, timeArray);
long clockSeqAndNode = StandardConverters.convertFromBytes(Long.class, clockSeqAndNodeArray);
UUID ud = new UUID(time,clockSeqAndNode);
return ud;
}
Every time i try to attribute any type of string to this i get Object reference not set to an instance of an object. I have tried every combination of possible way to handle the string, convert it to a string again and all the fuzz. It's very frustrating and i guess it's some kind of base principle of the structure/class usage and the string array or whatnot (which is also very dumb)
Private Class movie
Public name As String
Public actors As String
Public year As Integer
Public country As String
Public votes As Integer
End Class
Private movies() As movie
If File.Exists(OpenFileDialog1.FileName) Then
lblPath.Text = OpenFileDialog1.FileName
Dim iFile As New StreamReader(lblPath.Text)
While Not iFile.EndOfStream
current = iFile.ReadLine
movies(i).name = "sasasasa"
lbMovies.Items.Add(movies(i).name)
i = i + 1
End While
End If
these are the code parts where i use it
You are creating an empty array of movie objects, as was pointed out previously. Consequently movies(i) is Nothing. When you try to access a member (movies(i).name) the appropriate exception is generated. Note that your code does not even reach the assignment operator = but fails prior to that. In other words, this has nothing to do with strings altogether; you will get the same error if you write movies(i).votes = 42 instead. To fix your code you will first have to create a movie object, populate it and append it to your array.