Why do these 2 statments produce different results ?

[AndrewHoward 0]

Hi,

Why do these two statemets give different results ?

Pos('#$02','bla,bla,#$02,bla');// Pos = 9 

 

const
  STX=#$02;

Pos(STX,'bla,bla,#$02,bla'); // Pos = 0

 

Thanks

[Kryvich 165]

const STX=#$02;

isn't the same as

const STX='#$02';

[Rollo62 536]

https://stackoverflow.com/questions/6424510/removing-a-from-delphi-string

[Remy Lebeau 1394]

40 minutes ago, AndrewHoward said:

Why do these two statemets give different results ?

'#$02' (w/ quotes) is a string literal consisting of 4 distinct characters: '#', '$', '0', '2'.  The string you are searching, 'bla,bla,#$02,bla', contains that 4-char substring in it, hence the result is > 0.

 

#$02 (w/o quotes) is a single Char whose numeric value is 2.  The string you are searching does not contain that character in it, hence the result is 0.

Edited November 5, 2020 by Remy Lebeau