Difference between revisions of "TStringList"
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TStringList adds sorting functionality to [[TStrings]] by adding properties <tt>Sorted</tt>, <tt>Duplicates</tt> and <tt>CaseSensitive</tt> and methods like <tt>Find</tt> to facilitate speeded search within a list. | TStringList adds sorting functionality to [[TStrings]] by adding properties <tt>Sorted</tt>, <tt>Duplicates</tt> and <tt>CaseSensitive</tt> and methods like <tt>Find</tt> to facilitate speeded search within a list. | ||
| + | |||
| + | ;Example | ||
| + | <syntaxhighlight> | ||
| + | // get a value from file FILNAM filled with key=value pairs | ||
| + | function GetValueFromFile( filnam: string, key: string ): string; | ||
| + | var | ||
| + | lst: TStringList; | ||
| + | v: String; | ||
| + | begin | ||
| + | lst := TStringList.Create(); | ||
| + | lst.CaseSensitive := false; | ||
| + | lst.Duplicates := false; | ||
| + | lst.Sorted := true; | ||
| + | lst.ReadFromFile( filnam ); | ||
| + | v := lst.Values[ key ]; | ||
| + | lst.Free(); | ||
| + | result := v; | ||
| + | end; | ||
| + | </syntaxhighlight> | ||
==See also== | ==See also== | ||
Revision as of 14:08, 23 February 2017
A TStringList is a datatype that can hold an arbitrary length list of strings. The strings in a TStringList are accessible as concatenated plain text or as a series of strings.
- Inheritance
- TObject - Base class of all classes.
- TPersistent, IFPObserved - Base class for streaming system and persistent properties - Interface implemented by an object that can be observed.
- TStrings - Class to manage arrays or collections of strings
- TStringList - Standard implementation of the TStrings class.
- TStrings - Class to manage arrays or collections of strings
- TPersistent, IFPObserved - Base class for streaming system and persistent properties - Interface implemented by an object that can be observed.
TStringList adds sorting functionality to TStrings by adding properties Sorted, Duplicates and CaseSensitive and methods like Find to facilitate speeded search within a list.
- Example
// get a value from file FILNAM filled with key=value pairs
function GetValueFromFile( filnam: string, key: string ): string;
var
lst: TStringList;
v: String;
begin
lst := TStringList.Create();
lst.CaseSensitive := false;
lst.Duplicates := false;
lst.Sorted := true;
lst.ReadFromFile( filnam );
v := lst.Values[ key ];
lst.Free();
result := v;
end;