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Newcomers DBPro Corner / String and Variable Concatenation

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Grayvyn Master
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Posted: 9th Dec 2003 01:39
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I am trying to concat a string and a single/float into a string like...

num# = 0.1
s$ = "Hello world " + num#

The error is "types incompatible".
I can't find any function or operator like + or & that works.
I am using the trial version of DBP.
I come from a Visual Basic background.
Thanks for your help.

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CattleRustler
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Posted: 9th Dec 2003 01:42
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wrap num in STR() function
you can't conctenate a string and a number
remember the end result will be a string

-RUST-
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Easily Confused
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Posted: 9th Dec 2003 01:42 Edited at: 9th Dec 2003 01:45
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You need str$()

s$ = "Hello World " + str$(num#)

Programming anything is an art, and you can't rush art.
Unless your name is Bob Ross, then you can do it in thirty minutes.
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Easily Confused
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Posted: 9th Dec 2003 01:44
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Dang! You beat me to it CattleRustler

Programming anything is an art, and you can't rush art.
Unless your name is Bob Ross, then you can do it in thirty minutes.
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CattleRustler
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Posted: 9th Dec 2003 01:44
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-RUST-
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Grayvyn Master
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Posted: 9th Dec 2003 01:45
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heh, heh, I knew it would be simple
That's why I could not find it.
Thanks, it works now.

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Mnemonix
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Posted: 9th Dec 2003 15:38
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aargh visual basic. It worked in visual basic because it uses variant as its data type and basically doesnt care( i think).

"Any one for french fries n ketchup?"
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CattleRustler
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Posted: 9th Dec 2003 16:15
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yes variant is an evil evil thing, and it takes up 16 bytes in memory! Thank god vb.net did-away with ALL of vb6's stupidity

-RUST-
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Grayvyn Master
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Posted: 9th Dec 2003 19:07
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In VB6...
If you use str() then it returns a variant.
If you use str$() then it returns a string.
I do know that VB6 has many functions that are either
with $ or with out, like mid(), mid$() that work that way.
I have seen performance tests and the $ always works much faster.
any who...

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CattleRustler
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Posted: 9th Dec 2003 20:24
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correct because a string is using 2 or 4 bytes, where a variant is using 16 always - because basically a variant needs to hold whatever the user tries to stuff in it like a catch-all. that is crap! Thank god vb.net did away with all of this. Now everything is an object, including every variable you define. The variable will inherit the underlying class so say you make

Dim strMyVar as string

Then you could immediately use

strMyVar.Trim, or .mid() or .Format(), or whatever base methods were inherited from the underlying string class...

.NET - It makes me goose-pimply!


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CattleRustler
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Posted: 9th Dec 2003 20:27
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nice I just added that to my sig...

-RUST-

VB.NET makes me all goose-pimply!
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Easily Confused
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Posted: 9th Dec 2003 22:11
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Quote: ".NET - It makes me goose-pimply!"

Are you sure you haven't picked up a rash

Programming anything is an art, and you can't rush art.
Unless your name is Bob Ross, then you can do it in thirty minutes.
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