Difference between revisions of "Var"
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You can use /var -s to make a variable show the result when a value is set. | You can use /var -s to make a variable show the result when a value is set. | ||
| − | == Example | + | == Example == |
First, let's create [[Aliases|alias]] needed later on. | First, let's create [[Aliases|alias]] needed later on. | ||
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; now, let's display %x and %y values | ; now, let's display %x and %y values | ||
| − | echo -a %x | + | [[echo]] -a %x |
; returns 10 | ; returns 10 | ||
| − | echo -a %y | + | [[echo]] -a %y |
; returns bar | ; returns bar | ||
Revision as of 18:37, 24 August 2005
Var creates the local variable in the current routine and can only be referenced from inside this routine.
The difference between /var and /set is that var creates local variable what only exists while script is executed. Set sets value to variable and stores it there until it's unset. Local variables doesn't overwrite variables set with "set" command values.
You can set multible variables with one set
var %x = foo, %y = bar
Usage of = in syntax is optional
var %x foo
You can use /var -s to make a variable show the result when a value is set.
Example
First, let's create alias needed later on.
alias var_example { var -s %x foo | set -s %y bar }
Now, let's play around.
; set values to variables with set so values exists until they're unset set %x 10 set %y %x ; value fro %x is copyed to %y (for users from with previous knowledge from scripting) ; call of your own alias var_example ; displays ; * Set %x to foo ; * Set %y to bar ; now, let's display %x and %y values echo -a %x ; returns 10 echo -a %y ; returns bar
As we can see, %x still holds it origial value because /var creates only local variable, but %y was overwritten with /set.
