Difference between revisions of "?"
Yvonne.milne (Talk | contribs) |
Yvonne.milne (Talk | contribs) (→Description) |
||
Line 31: | Line 31: | ||
|- | |- | ||
|} | |} | ||
+ | |||
+ | From v7.2 the ? > command can be used in server-side Lianja Server Pages in Web Apps to assist in debugging. | ||
+ | |||
+ | Add the [[SET DEBUGOUT|set debugout on]] command to the .rsp script along with ? > statements then open the App in the browser using [[Deploying_to_Local_Directory#Preview_live_in_browser|Preview live in browser]]. The ? > display can then be monitored in the App Builder Console workspace. | ||
+ | |||
+ | The ? > command supports arrays and objects just like the ? command. | ||
==Example== | ==Example== |
Revision as of 06:22, 25 April 2022
Contents
Purpose
Evaluate expression and output result
Syntax
? <exp> [,<exp>] | ?? <exp> [,<exp>]
[AT <expN>]
[FUNCTION <expC1>]
[PICTURE <expC2>]
[STYLE <expC3>]
See Also
??, ECHO, SET SPACE, TRANSFORM()
Description
The ? command outputs a carriage return, then a line feed, then evaluates each expression in turn and displays the result. The ?? command evaluates the expression and displays the results on the same line, no carriage return/line feed sequence is output. If more than one expression is specified and SET SPACE is ON, a single space is output between each expression. If SET SPACE is OFF, the expressions are output with no space in between.
Clause | Description |
---|---|
AT <expN> | You may optionally specify the column at which the expression will be output with the AT <expN> clause. |
PICTURE <expC1> | The PICTURE clause supports all picture template symbols listed in the @...SAY command. |
FUNCTION <expC2> | The FUNCTION qualifier allows picture functions to be specified. Normally this can be done with the PICTURE qualifier by preceding the picture with '@'. If the FUNCTION qualifier is used the '@' is not needed. |
STYLE <expC3> | The STYLE qualifier has been added for compatibility with other Xbase languages. |
From v7.2 the ? > command can be used in server-side Lianja Server Pages in Web Apps to assist in debugging.
Add the set debugout on command to the .rsp script along with ? > statements then open the App in the browser using Preview live in browser. The ? > display can then be monitored in the App Builder Console workspace.
The ? > command supports arrays and objects just like the ? command.
Example
? "price" at 01 picture "@!",1234.56 picture "$99,999.99" PRICE $1,234.56