Questions tagged [tdictionary]
38 questions
24
votes
1 answer
Delphi TDictionary iteration
I have a function where I store some key- value pairs and when I iterate them I get this error twice: [dcc32 Error] App.pas(137): E2149 Class does not have a default property.
Here is part of my code:
function BuildString: string;
var
i: Integer;
…
bob_saginowski
- 1,429
- 2
- 20
- 35
19
votes
3 answers
How Can I List a TDictionary in Alphabetical Order by Key in Delphi 2009?
How can I use a TEnumerator to go through my TDictionary in sorted order by key?
I've got something like this:
var
Dic: TDictionary;
Enum: TPair;
begin
Dic := TDictionary.create;
…
lkessler
- 19,819
- 36
- 132
- 203
16
votes
4 answers
Is there an easy way to copy the TDictionary content into another?
Is there a single method or easy way how to copy one TDictionary content into another ?
Let's say I have the following declarations
type
TItemKey = record
ItemID: Integer;
ItemType: Integer;
end;
TItemData = record
Name: string;
…
Martin Reiner
- 2,167
- 2
- 20
- 34
14
votes
3 answers
delphi Using records as key in TDictionary
Can you use a record as a Key value in TDictionary? I want to find objects based on combination of string, integer and integer.
TUserParKey=record
App:string;
ID:integer;
Nr:integer;
end;
...
var
tmpKey:TUserParKey;
…
r_j
- 1,348
- 15
- 35
9
votes
2 answers
How to create a custom enumerator for a class derived from TDictionary?
I have defined a collection derived from TDictionary, and need to define a custom enumerator that apply an additional filter.
I'm stuck as I can't access the TDictionary FItems array (it is private) so I can't define the MoveNext method
How would…
user315561
- 651
- 5
- 18
9
votes
1 answer
Sorting TDictionary by a key of Integer in ascending order
How can I sort TDictionary by a key of Integer in ascending order in Delphi 2009?
Max Smith
- 395
- 1
- 2
- 13
7
votes
1 answer
Why does a deserialized TDictionary not work correctly?
I try serialize/deserialize standard delphi container using standard delphi serializer.
procedure TForm7.TestButtonClick(Sender: TObject);
var
dict: TDictionary;
jsonValue: TJSONValue;
begin
//serialization
dict :=…
aQuu
- 565
- 8
- 18
7
votes
1 answer
How to get the key from a TDictionary?
I have a TDictionary.
I want to accomplish something like
for i := 0 to MyDictionary.Count -1 do
ShowMessage(MyDictionary.Keys[i].AStringProperty)
I cannot Access the Keys anymore I can just use them if I exactly know…
UnDiUdin
- 14,924
- 39
- 151
- 249
7
votes
1 answer
Class field (static field) in Delphi
There is a class TPerson. It is known that FSecondName unique to each object.
type
TPerson = class(TObject)
private
FAge: Integer;
FFirstName: String;
FSecondName: String;
public
property Age: Integer read FAge;
…
Andrew
- 157
- 2
- 7
6
votes
1 answer
GetHashCode good practice?
For a Delphi project (built with RAD Studio XE7), I want to create a dictionary of brushes. Each dictionary item contains a TMyBrush object as key, that describes the brush to retrieve, and a GDI+ brush as value.
The TMyBrush class contains 3…
Jean-Milost Reymond
- 1,833
- 1
- 15
- 36
5
votes
1 answer
Delphi dictionary freeing
I implemented the following class:
type
TUtilProcedure = procedure(var AJsonValue: TJSONObject);
TCallback = class
private
FName: string;
FProcedure: TUtilProcedure;
FAnnotation: string;
public
constructor Create(AName:…
bob_saginowski
- 1,429
- 2
- 20
- 35
5
votes
2 answers
Create a constant array of TDictionary by default value
I want to use the a TDictionary in a Delphi project. But I've a problem,how i can Create a constant array of TDictionary by default value ?
For example i want to allocate 4 item for a dictionary such as bellow code (for constant array of TItem) …
Behrooz
- 684
- 1
- 9
- 19
5
votes
1 answer
Correct way to dispose of TDictionary after sorting it into an array
I have a TDictionary like
target_results : TDictionary;
After populating it I need to sort the results. I'm doing it like this
type
TSearchResult = TPair;
var
target_results_array :…
Miguel E
- 1,316
- 2
- 17
- 39
4
votes
1 answer
TDictionary save to file
I have a lot of files(about 160 000) and I need to have information about position of individual words in files(fulltext). So I used Dictionary like this:
WordDict : TDictionary>;
Now I know that WORD1…
user1990191
- 43
- 1
- 4
2
votes
0 answers
Serialize Delphi TDictionary to JSON string as C#
I have a Delphi program written in Alexandria 11.1 that needs to send a JSON file to a service that is written in C#. If the JSON structure is static, I create a model class and use the native TJson.ObjectToJsonString of REST.Json to convert it to…
stmpakir
- 319
- 2
- 10