Lazarus
Home
Help
TinyPortal
Search
Login
Register
Lazarus
»
Forum
»
Other Languages
»
Spanish
»
Detectar un espacio en un string
Free Pascal
Website
Downloads
Wiki
Documentation
Bugtracker
Mailing List
Lazarus
Website
Downloads (Laz+FPC)
Packages (OPM)
FAQ
Wiki
Documentation (RTL/FCL/LCL)
Bugtracker
CCR Bugs
IRC channel
GIT
Mailing List
Other languages
Foundation
Website
Useful Wiki Links
Project Roadmap
Getting the Source
Screenshots
How to use the forum
About donations (wiki)
Bookstore
Computer Math and Games in Pascal
(preview)
Lazarus Handbook
Search
Advanced search
Recent
splitting an image
by
TRon
[
Today
at 09:40:23 am]
how to tweek fpmake to co...
by
paule32
[
Today
at 08:23:49 am]
Why isn't TTIRadioGroup's...
by
egsuh
[
Today
at 08:09:35 am]
FpDebug questions
by
440bx
[
Today
at 03:43:41 am]
Lazarus for Windows on aa...
by
Wallaby
[April 23, 2024, 11:46:56 pm]
Parameter passing odditie...
by
KodeZwerg
[April 23, 2024, 11:04:39 pm]
Can function be used for ...
by
jamie
[April 23, 2024, 10:53:10 pm]
(Solved) TIndexedAVLTree ...
by
lainz
[April 23, 2024, 10:49:03 pm]
Demo Scene Picture sinwav...
by
KodeZwerg
[April 23, 2024, 10:26:21 pm]
fkInternalCalc
by
zraja
[April 23, 2024, 09:31:07 pm]
A fairly simple sound sol...
by
KodeZwerg
[April 23, 2024, 09:23:37 pm]
add new targets to make
by
marcov
[April 23, 2024, 08:38:42 pm]
Quirky windows
by
ASerge
[April 23, 2024, 07:07:16 pm]
[Request] Demo Scene Sub ...
by
Gigatron
[April 23, 2024, 06:29:39 pm]
Unlocking Files
by
KodeZwerg
[April 23, 2024, 06:03:08 pm]
[SOLVED] trunk bug for mi...
by
Key-Real
[April 23, 2024, 05:56:32 pm]
Demo Scene Bitmap Font Sc...
by
Gigatron
[April 23, 2024, 05:56:27 pm]
Compile/Convert Delphi pr...
by
Martin_fr
[April 23, 2024, 05:43:11 pm]
Generics - correct syntax
by
Thaddy
[April 23, 2024, 05:40:59 pm]
InstallAware Using Lazaru...
by
msintle
[April 23, 2024, 05:26:36 pm]
Xcode Command Line Tools ...
by
Joseph
[April 23, 2024, 05:16:39 pm]
Offical launch of the 1 B...
by
Hartmut
[April 23, 2024, 04:49:29 pm]
what to do if my target M...
by
nickysn
[April 23, 2024, 04:16:02 pm]
compiler error in unit
by
paule32
[April 23, 2024, 03:49:50 pm]
Multithreading - synchron...
by
mika
[April 23, 2024, 01:48:51 pm]
« previous
next »
Print
Pages: [
1
]
Author
Topic: Detectar un espacio en un string (Read 2007 times)
mav
Jr. Member
Posts: 80
Detectar un espacio en un string
«
on:
May 12, 2021, 01:41:02 am »
¿Como detectarlo? Sin que de fallos,
He probado de varias maneras y no lo encuentro,
Code: Pascal
[Select]
[+]
[-]
nombre
:
=
Edit1
.
Text
;
for
i
:
=
1
to
length
(
nombre
)
do
begin
if
(
nombre
[
i
]
in
(
' '
)
then
// o #32, $20 el in no deja utilizarlo aquí
begin
ShowMessage
(
'Tu nombre no puede tener espacios '
)
;
Exit
;
end
;
end
;
Saludos.
Logged
dseligo
Hero Member
Posts: 1222
Re: Detectar un espacio en un string
«
Reply #1 on:
May 12, 2021, 02:37:42 am »
Code: Pascal
[Select]
[+]
[-]
nombre
:
=
Edit1
.
Text
;
if
Pos
(
' '
,
nombre
)
>
0
then
begin
ShowMessage
(
'Tu nombre no puede tener espacios '
)
;
Exit
;
end
;
Logged
mav
Jr. Member
Posts: 80
Re: Detectar un espacio en un string
«
Reply #2 on:
May 12, 2021, 02:48:42 am »
Vale, funciona perfectamente.
Gracias.
Logged
lucamar
Hero Member
Posts: 4219
Re: Detectar un espacio en un string
«
Reply #3 on:
May 12, 2021, 05:00:31 am »
En caso de que lo necesites alguna vez, la sintaxix correcta para tu código original es:
Code: Pascal
[Select]
[+]
[-]
if
nombre
[
i
]
in
[
' '
]
then
con corchetes, no paréntesis, porque se trata de la pertenencia a un conjunto ("set").
Logged
Turbo Pascal 3 CP/M - Amstrad PCW 8256 (512 KB !!!)
Lazarus/FPC 2.0.8/3.0.4 & 2.0.12/3.2.0 - 32/64 bits on:
(K|L|X)Ubuntu 12..18, Windows XP, 7, 10 and various DOSes.
mav
Jr. Member
Posts: 80
Re: Detectar un espacio en un string
«
Reply #4 on:
May 12, 2021, 02:59:28 pm »
Gracias.
:)Buen "truco", si me va a servir, porque ya en mas ocasiones me ha dado error lo del
in
y
estoy viendo que como en este caso son los corchetes...
Logged
Edson
Hero Member
Posts: 1302
Re: Detectar un espacio en un string
«
Reply #5 on:
May 12, 2021, 05:19:10 pm »
Considerar que las tabulaciones son también espacios en blanco.
A lo mejor conviene más hacer una comparación de caracteres válidos, que inválidos.
Logged
Lazarus 2.2.6 - FPC 3.2.2 - x86_64-win64 on Windows 10
Print
Pages: [
1
]
« previous
next »
Lazarus
»
Forum
»
Other Languages
»
Spanish
»
Detectar un espacio en un string
TinyPortal
© 2005-2018