String map command

[Michael Hertel]

I am trying to do the following:

set data [string map {x $newx} $data]

I am getting literal “$newx” instead of the variable value.

I’ve played around with escapes and brackets and give up.

Topic

[Max Drown (Infor)]

Try it with eval. Might work.

-- Max Drown (Infor)

[Max Drown (Infor)]

Nevermind the eval comment. Here’s how you do it:

Code:

set data “x”
set newx “Hello, World!”
set data [string map [list x $newx] $data]
echo $data

-- Max Drown (Infor)

[Michael Hertel]

Thanks Max, I knew it was too easy.

[Charlie Bursell]

Your origianal code did not work because the $ value was inside curly braces.  It was interpreted as literal $newx

Had you done it like:  set data [string map “x $newx” $data]

It would have worked as expected

[Michael Hertel]

I thought I tried double quotes. Oh well.

Also, I’m wondering where I came up with the curly braces in the first place. Seems to me that was the only way it would work once.

Thanks for the info Charlie.

[Author]

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